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Insider trading and portfolio structure in experimental asset markets with a long lived asset
(1997)
We report results of a series of nine market experiments with asymmetric information and a fundamental value process that is more "realistic" than those in previous experiments. Both a call market institution and a continuous double auction mechanism are employed. We find considerable pricing inefficiencies that are only partially exploited by insiders. The magnitude of insider gains is analyzed separately for each experiment. We find support for the hypothesis that the continuous double auction leads to more efficient outcomes. Finally, we present evidence of an endowment effect: the initial portfolio structure influences the final asset holdings of experimental subjects.
Seit zwanzig Jahren befaßt sich die Finanzmarktforschung einerseits mit Fragen der Bewertung und des Managements von Finanztiteln auf effizienten Kapitalmärkten und mit Fragen der Managementkontrolle auf unvollkommenen Märkten. Der folgende selektive Überblick konzentriert sich auf zentrale Aspekte der Theorie und Empirie der Managementkontrolle bei asymmetrischer Information. Ziel ist die Auseinandersetzung mit der unlängst vorgetragenen These zu den Mythen der Unternehmenskontrolle (Martin Hellwig 1997). Der aktuelle Überblick wird entwickelt vor dem Hintergrund der Gutenberg’schen Position eines eigenständigen Unternehmensinteresses, losgelöst von den Interessen der shareholder oder anderer stakeholder. Diese Position von Gutenberg verbindet sich im dritten Band der „Grundlagen der BWL: Die Finanzen“ von 1969 mit der Forderung nach Einhaltung eines sog. finanziellen Gleichgewichts. Erst in jüngster Zeit werden auch kapitalmarkttheoretisch fundierte Modelle entwickelt, die auch Raum bieten für eine Autonomie des Managements gegenüber dessen stakeholders.
Der vorliegende Beitrag führt eine detaillierte empirische Untersuchung über die Rolle der amtlichen Kursmakler an der Frankfurter Wertpapierbörse durch. Der verwendete Datensatz erlaubt eine Analyse des Einflusses der Maklertätigkeit auf Liquidität und Volatilität sowie eine Beurteilung der Profitabilität der Eigengeschäfte.
Die Beteiligung der Makler am Präsenzhandel ist erheblich. Ihre Eigengeschäfte machen über 20% des Handelsvolumens zu gerechneten Kursen und über 40% des Handelsvolumens im variablen Handel aus. Für letzteren wird zudem dokumentiert, daß die Tätigkeit der Makler zu einer deutlichen Reduktion der Geld-Brief-Spannen beiträgt. Die letztendlich gezahlte effektive Spanne beträgt im Durchschnitt weniger als ein Drittel der Spanne, die sich aus dem Orderbuch ergibt.
Für den Handel zu gerechneten Kursen wird gezeigt, daß die Preisfeststellung durch die Makler zu einer Verringerung der Volatilität führt. Eine Beurteilung des Einflusses der Makler auf die Volatilität im fortlaufenden Handel scheitert daran, daß das hierfür teilweise verwendete Maß, die Stabilisierungsrate, nach unserer Einschätzung keine aussagekräftigen Resultate liefert.
Die Makler erzielten während unseres Untersuchungszeitraums im Durchschnitt keinen Gewinn aus ihren Eigengeschäften. Eine Zerlegung der Gewinne in zwei Komponenten zeigt, daß positive Spannengewinne im Aggregat nicht für entstehende Positionierungsverluste kompensieren können.
Insgesamt zeigt unsere Untersuchung, daß die Kursmakler an den deutschen Wertpapierbörsen einen Beitrag zur Sicherung der Marktqualität leisten. Die Konsequenzen dieser Resultate für die Organisation des Aktienhandels in Deutschland werden diskutiert.
This paper provides a detailed empirical analysis of the call auction procedure on the German stock exchanges. The auction is conducted by the Makler whose position resembles that of a NYSE specialist. We use a dataset which contains information about all individual orders for a sample of stocks traded on the Frankfurt Stock Exchange (FSE). This sample allows us to calculate the cost of transacting in a call market and compare them to the costs of transacting in a continuous market. We find that transaction costs for small transactions in the call market are lower than the quoted spread in the order book of the continuous market whereas transaction costs for large transactions are higher than the spread in the continuous market.
We further address the question whether active participation of the Makler is advantageous. On the one hand he may accomodate order imbalances, increase the liquidity of the market and stabilize prices. On the other hand, the discretion in price setting gives him an incentive to manipulate prices. This may increase return volatility. Our dataset identifies the trades the Maklers make for their own accounts. We eliminate these trades and determine the price that would have obtained without their participation. Comparing this hypothetical price series to the actual transaction prices, we find that Makler participation tends to reduce return volatility. A further analysis shows that the actual prices are much closer to the surrounding prices of the continuous trading session than the hypothetical prices that would have obtained without Makler participation. These results indicate that the Maklers provide a valuable service to the market. We further calculate the profits associated with the positions taken by the Maklers and find that, on average, they do not earn profits on the positions they take. Their compensation is thus restricted to the commissions they receive.
Collateral, default risk, and relationship lending : an empirical study on financial contracting
(1999)
This paper provides further insights into the nature of relationship lending by analyzing the link between relationship lending, borrower quality and collateral as a key variable in loan contract design. We used a unique data set based on the examination of credit files of five leading German banks, thus relying on information actually used in the process of bank credit decision-making and contract design. In particular, bank internal borrower ratings serve to evaluate borrower quality, and the bank's own assessment of its housebank status serves to identify information-intensive relationships. Additionally, we used data on workout activities for borrowers facing financial distress. We found no significant correlation between ex ante borrower quality and the incidence or degree of collateralization. Our results indicate that the use of collateral in loan contract design is mainly driven by aspects of relationship lending and renegotiations. We found that relationship lenders or housebanks do require more collateral from their debtors, thereby increasing the borrower's lock-in and strengthening the banks' bargaining power in future renegotiation situations. This result is strongly supported by our analysis of the correlation between ex post risk, collateral and relationship lending since housebanks do more frequently engage in workout activities for distressed borrowers, and collateralization increases workout probability.
Collateral, default risk, and relationship lending : an empirical study on financial contracting
(2000)
This paper provides further insights into the nature of relationship lending by analyzing the link between relationship lending, borrower quality and collateral as a key variable in loan contract design. We used a unique data set based on the examination of credit files of five leading German banks, thus relying on information actually used in the process of bank credit decision-making and contract design. In particular, bank internal borrower ratings serve to evaluate borrower quality, and the bank's own assessment of its housebank status serves to identify information-intensive relationships. Additionally, we used data on workout activities for borrowers facing financial distress. We found no significant correlation between ex ante borrower quality and the incidence or degree of collateralization. Our results indicate that the use of collateral in loan contract design is mainly driven by aspects of relationship lending and renegotiations. We found that relationship lenders or housebanks do require more collateral from their debtors, thereby increasing the borrower's lock-in and strengthening the banks' bargaining power in future renegotiation situations. This result is strongly supported by our analysis of the correlation between ex post risk, collateral and relationship lending since housebanks do more frequently engage in workout activities for distressed borrowers, and collateralization increases workout probability. First version: March 12, 1999
We analyse the coordination problem in multi-creditor relationships empirically, relying on a unique panel data set that contains detailed credit-file information on distressed lending relationships in Germany, including information on creditor pools, a legal institution aiming at coordinating lender interests in borrower distress. We report three major findings. First, the existence of creditor pools increases the probability of workout success. Second, the results are consistent with coordination costs being positively related to pool size. Third, major determinants of pool formation are found to be the number of banks, the distribution of lending shares, and the severity of the distress shock.
Multiple lenders and corporate distress: evidence on debt restructuring : [Version Juli 2002]
(2002)
In the recent theoretical literature on lending risk, the common pool problem in multi-bank relationships has been analyzed extensively. In this paper we address this topic empirically, relying on a unique panel data set that includes detailed credit-fie information on distressed lending relationships in Germany. In particular, it includes information on bank pools, a legal institution aimed at coordinating lender interests in borrower distress. We find that the existence of small bank pools increases the probability of workout success and that coordination costs are positively related to pool size. We identify major determinants of pool formation, in particular the distribution of lending shares among banks, the number of banks, and the severity of the distress shock to the borrower.
This paper analyses the role of collateral in loan contracting when companies are financed by multiple bank lenders and relationship lending can be present. We conjecture and empirically validate that relationship lenders, who enjoy an informational advantage over arm’s-length banks, are more senior to strengthen their bargaining power in future renegotiation if borrower’s face financial distress. This deters costly conflicts between lenders and fosters workout decisions by the best informed party. Consistent with our conjecture, we find that relationship lender in general have a higher probability to be collateralized, and a higher degree of collateralization (i.e. seniority). Furthermore, we show that seniority and the status of relationship lending increases the likelihood that a bank invests in a risky workout of distressed borrowers. Both findings support the view that collateral is a strategic instrument intended to influence the bargaining position of banks. Our result further suggest that seniority and relationship lending are complementary to each other. JEL Classification: G21
This paper makes an attempt to present the economics of credit securitisation in a non-technical way, starting from the description and the analysis of a typical securitisation transaction. The paper sketches a theoretical explanation for why tranching, or nonproportional risk sharing, which is at the heart of securitisation transactions, may allow commercial banks to maximize their shareholder value. However, the analysis makes also clear that the conditions under which credit securitisation enhances welfare, are fairly restrictive, and require not only an active role of the banking supervisory authorities, but also a price tag on the implicit insurance currently provided by the lender of last resort.
Risk transfer with CDOs
(2008)
Modern bank management comprises both classical lending business and transfer of asset risk to capital markets through securitization. Sound knowledge of the risks involved in securitization transactions is a prerequisite for solid risk management. This paper aims to resolve a part of the opaqueness surrounding credit-risk allocation to tranches that represent claims of different seniority on a reference portfolio. In particular, this paper analyzes the allocation of credit risk to different tranches of a CDO transaction when the underlying asset returns are driven by a common macro factor and an idiosyncratic component. Junior and senior tranches are found to be nearly orthogonal, motivating a search for the where about of systematic risk in CDO transactions. We propose a metric for capturing the allocation of systematic risk to tranches. First, in contrast to a widely-held claim, we show that (extreme) tail risk in standard CDO transactions is held by all tranches. While junior tranches take on all types of systematic risk, senior tranches take on almost no non-tail risk. This is in stark contrast to an untranched bond portfolio of the same rating quality, which on average suffers substantial losses for all realizations of the macro factor. Second, given tranching, a shock to the risk of the underlying asset portfolio (e.g. a rise in asset correlation or in mean portfolio loss) has the strongest impact, in relative terms, on the exposure of senior tranche CDO-investors. Our findings can be used to explain major stylized facts observed in credit markets.
This paper analyzes the risk properties of typical asset-backed securities (ABS), like CDOs or MBS, relying on a model with both macroeconomic and idiosyncratic components. The examined properties include expected loss, loss given default, and macro factor dependencies. Using a two-dimensional loss decomposition as a new metric, the risk properties of individual ABS tranches can directly be compared to those of corporate bonds, within and across rating classes. By applying Monte Carlo Simulation, we find that the risk properties of ABS differ significantly and systematically from those of straight bonds with the same rating. In particular, loss given default, the sensitivities to macroeconomic risk, and model risk differ greatly between instruments. Our findings have implications for understanding the credit crisis and for policy making. On an economic level, our analysis suggests a new explanation for the observed rating inflation in structured finance markets during the pre-crisis period 2004-2007. On a policy level, our findings call for a termination of the 'one-size-fits-all' approach to the rating methodology for fixed income instruments, requiring an own rating methodology for structured finance instruments. JEL Classification: G21, G28 Keywords: credit risk, risk transfer, systematic risk
Wir halten das bisher in Deutschland und anderen Ländern praktizierte Krisenmanagement für ordnungspolitisch inakzeptabel. Die aktuelle Notlage 2007 und 2008, verbunden mit einem enormen Überraschungsmoment, ließ möglicherweise keine andere Wahl, als die betroffenen Banken unbürokratisch zu retten - aber nun ist es Zeit, grundlegende Lehren aus den Rettungsaktionen zu ziehen.
Risiko muss wieder kosten
(2011)
Die große Herausforderung, um das systemische Risiko im Finanzsektor zu vermindern, besteht darin, kluge Finanzarchitektur zu etablieren, die gewährtleistet, dass ein verbindlicher Anteil von Bankanleihen außerhalb des Finanzsektors gehalten wird. Die Anleihegläubiger von außerhalb des Bankensektors müssen sich dadurch auszeichnen, dass sie kein Refinanzierungsrisiko haben, wenn sie eine plötzliche Verlussituation erleben.
The bail-in puzzle
(2011)
Under the current conditions of a global financial crisis, notably in Europe’s banking industry, the governance role of bond markets is defunct. In fact, investors have understood that bank debt will almost always be rescued with taxpayers’ money. The widespread practice of government-led bank bailouts has thus severely corrupted the bond market, leading to the underestimation of risk and, as a consequence, the destruction of market discipline. Any feasible solution to the bank-debt-is-too-cheap problem will have to re-install true default risk for bank bond holders.
We develop a dynamic network model with heterogenous banks which undertake optimizing portfolio decisions subject to liquidity and capital constraints and trade in the interbank market whose equilibrium is governed by a tatonnement process. Due to the micro-funded structure of the decisional process as well as the iterative dynamic adjustment taking place in the market, the links in the network structures are endogenous and evolve dynamically. We use the model to assess the diffusion of systemic risk (measured as default probability), the contribution of each bank to it as well as the evolution of the network in response to financial shocks and across different prudential policy regimes.
We develop a dynamic network model with heterogenous banks which undertake optimizing portfolio decisions subject to liquidity and capital constraints and trade in the interbank market whose equilibrium is governed by a tatonnement process. Due to the micro-funded structure of the decisional process as well as the iterative dynamic adjustment taking place in the market, the links in the network structures are endogenous and evolve dynamically. We use the model to assess the diffusion of systemic risk, the contribution of each bank to it as well as the evolution of the network in response to financial shocks and across different prudential policy regimes.
This present comment suggests an amendment to the proposal for a directive of the European Parliament and of the Council, establishing a framework for the recovery and resolution of credit institutions and investment firms. The current proposal focuses on bail-in, but does not sufficiently take into account the pressure exerted on central bankers, supervisors and politicians by the fear of interbank contagion. The only way out of this hold-up type of situation can be found in bail-in bonds. Bail-in bonds are dedicated loss taking debt instruments, whose status of being first in line if it comes to default is clearly communicated from day one.
In dieser Notiz wird ein neues Konzept für eine europäische Einlagensicherung vorgeschlagen, welches den starken politischen Vorbehalten Rechnung trägt, die gegen eine Vergemeinschaftung der Haftung für Bankeinlagen bestehen. Das skizzierte drei-stufige Einlagensicherungsmodell führt existierende nationale Einlagensicherungseinrichtungen weiter, bietet einen europäischen Verlustausgleich und verhindert eine exzessive Risikoübernahme zu Lasten der internationalen Gemeinschaft.
We develop a dynamic network model whose links are governed by banks' optmizing decisions and by an endogenous tâtonnement market adjustment. Banks in our model can default and engage in firesales: risk is transmitted through direct and cascading counterparty defaults as well as through indirect pecuniary externalities triggered by firesales. We use the model to assess the evolution of the network configuration under various prudential policy regimes, to measure banks' contribution to systemic risk (through Shapley values) in response to shocks and to analyze the effects of systemic risk charges. We complement the analysis by introducing the possibility of central bank liquidity provision.
This paper summarizes the key proposals of the report by the Liikanen Commission. It starts with an explanation of a crisis narrative underlying the Report and its proposals. The proposals aim for a revitalization of market discipline in financial markets. The two main structural proposals of the Liikanen Report are: first, for large banks, the separation of the trading business from other parts of the banking business (the "Separation Proposal"), and the mandatory issuing of subordinated bank debt thought to be liable (the strict "Bail-in Proposal"). The credibility of this commitment to private liability is achieved by strict holding restrictions. The anticipated consequences of the introduction of these structural regulations for the financial industry and markets are addressed in a concluding part.
This note proposes a new set-up for the fund backing the Single Resolution Mechanism (SRM). The proposed fund is a Multi-Tier Resolution Fund (MTRF), restricting the joint and several supranational liability to a limited range of losses, bounded by national liability at the upper and the lower end. The layers are, in ascending order: a national fund (first losses), a European fund (second losses), the national budget (third losses), the ESM (fourth losses, as a backup for sovereigns). The system works like a reinsurance scheme, providing clear limits to European-level joint liability, and therefore confining moral hazard. At the same time, it allows for some degree of risk sharing, which is important for financial stability if shocks to the financial system are exogenous (e.g., of a supranational macroeconomic nature). The text has four parts. Section A describes the operation of the Multi-Tier Resolution Fund, assuming the fund capital to be fully paid-in (“Steady State“). Section B deals with the build-up phase of the fund capital (“Build up“). Section C discusses how the proposal deals with the apparent incentive conflicts. The final Section D summarizes open questions which need further thought (“Open Questions“).
Ausgehend von einer Erläuterung der Kriseninterpretation (crisis narrative), wie sie in dem Bericht der Liikanen-Kommission zugrunde liegt, werden die nach Ansicht des Verfassers zentralen Vorschläge des Kommissionsberichts ausgewählt, vorgestellt und in den größeren Rahmen einer erneuerten Ordnungspolitik für die Finanzmärkte Europas eingeordnet. Die mit den Vorschlägen eng zusammenhängenden Reformelemente der Bankenunion werden in diesem Text bewusst ausgeklammert. Die beiden zentralen Strukturvorschläge des Liikanen-Berichts betreffen die Abspaltung der Handelsgeschäfte von dem Universalbankengeschäft für große, internationale Banken (der Trennbankenvorschlag), sowie die verpflichtende Emission nachrangigen, glaubwürdig haftenden Fremdkapitals (der strenge Bail-in Vorschlag). Glaubwürdigkeit der Haftungszusage wird durch strenge Halterestriktionen erreicht. Vorhersehbare Folgerungen einer Einführung dieser Strukturregeln für die Finanzindustrie und -märkte werden in einem abschließenden Teil angesprochen.
In der dritten Veranstaltung der „Gesprächsreihe zu Strukturreformen im europäischen Bankensektor“ diskutierten Professor Dr. Jan Krahnen und Dr. Theodor Weimer die Auswirkungen von Regulierung auf Bankverhalten und Wettbewerb, insbesondere im Hinblick auf die Vorschläge der Liikanen-Kommission. Weimer verwies auf die volkswirtschaftlichen Kosten einer zu strengen Bankenregulierung, u.a. negative Auswirkungen auf die Kreditvergabe. Weimer warnte auch davor, dass man in Europa, und gerade in Deutschland, strenger reguliere als in anderen Ländern. Krahnen erklärte, man habe durch die Liikanen-Vorschläge vor allem das Problem des systemischen Risikos im Bankensektor adressieren wollen. Außerdem sei es ein Ziel der Kommission gewesen, Banken so zu regulieren, dass der Steuerzahler im Krisenfall nicht länger für die Risiken der Banken haften müsse. Es sei notwendig, den Bankensektor zu reformieren, damit Banken abgewickelt werden könnten, auch wenn diese untereinander vernetzt sind.
Gesprächsreihe zu Strukturreformen im europäischen
Bankensektor : Zukunft der Universalbanken
(2013)
In der zweiten Veranstaltung der „Gesprächsreihe zu Strukturreformen im europäischen Bankensektor“ diskutierten Professor Dr. Jan Pieter Krahnen und Dr. Michael Kemmer die Zukunft der Universalbanken. Anlass war der Vorschlag der Liikanen-Kommission, dass Finanzinstitute einen Teil ihres Investmentbankings, den Eigenhandel und das Market-Making, ab einer bestimmten Größenordnung ausgliedern sollen.
Gesprächsreihe zu Strukturreformen im Europäischen Bankensektor: Managementvergütung im Bankensektor
(2013)
In der ersten Veranstaltung der „Gesprächsreihe zu Strukturreformen im europäischen Bankensektor“ diskutierten Professor Dr. Jan Krahnen und Dr. Thomas Mayer den im Liikanen-Bericht enthaltenen Vorschlag zur Managervergütung im Bankensektor. Der Vorschlag baut auf einem der Kernvorschläge der Liikanen-Kommission auf, nach dem Finanzinstitute gehalten sein sollen, einen Teil ihres Fremdkapitals so zu strukturieren, dass, bei Schieflage des Finanzinstituts, eine Inhaftungnahme der Gläubiger dieses Fremdkapitals möglich wird. Um dies zu erreichen, empfiehlt die Liikanen-Kommission für alle Banken, dass diese einen festgelegten Prozentsatz ihres Kapitals als „Bail-in Anleihen“ begeben müssen. Der Vorschlag zur Managervergütung sieht vor Bail-in Anleihen für die leistungsorientierte und anreizorientierte Entlohnung von Managern einzusetzen, um Anreize zu geben, die Risikopolitik des Unternehmens so zu verankern, dass auch längerfristig keine exorbitanten Risiken auftreten.
Am 6. Februar 2013 hat die Bundesregierung den "Entwurf eines Gesetzes zur Abschirmung von Risiken und zur Planung der Sanierung und Abwicklung von Kreditinstituten und Finanzgruppen” veröffentlicht. Artikel 2 des Gesetzesentwurfs sieht vor bei systemrelevanten Finanzinstitutionen das Einlagen- und Kreditgeschäft vom Handelsgeschäft abzutrennen. Die Zielsetzung des Gesetzentwurfs, Kapitalkosten wieder in direkte Abhängigkeit des Risikos von Geschäftsfeldern zu setzen und eine Abwicklung zu erleichtern, die ohne den Einsatz von Steuermitteln gelingen kann, ist begrüßenswert. In seiner derzeitigen Ausgestaltung läuft der Gesetzesentwurf jedoch Gefahr, zwar symbolträchtig zu sein, aber in der Zielerreichung hinsichtlich Stabilität des Finanzmarktes und Schutz von Einlegern und Steuerzahlern hinter den Erwartungen zurückzubleiben.
In this note, a new concept for a European deposit guarantee scheme is proposed, which takes account of the strong political reservations against a mutualization of the liability for bank deposits. The three-stage model for deposit insurance outlined in the text builds on existing national deposit guarantee schemes, offering loss compensation on a European level and at the same time preventing excessive risk and moral hazard taking by individual banks.
This policy letter provides an overview of the strengths, weaknesses, risks and opportunities of the upcoming comprehensive risk assessment, a euro area-wide evaluation of bank balance sheets and business models. If carried out properly, the 2014 comprehensive assessment will lead the euro area into a new era of banking supervision. Policy makers in euro area countries are now under severe pressure to define a credible backstop framework for banks. This framework, as the author argues, needs to be a broad, quasi-European system of mutually reinforcing backstops.
This paper makes a conceptual contribution to the effect of monetary policy on financial stability. We develop a microfounded network model with endogenous network formation to analyze the impact of central banks' monetary policy interventions on systemic risk. Banks choose their portfolio, including their borrowing and lending decisions on the interbank market, to maximize profit subject to regulatory constraints in an asset-liability framework. Systemic risk arises in the form of multiple bank defaults driven by common shock exposure on asset markets, direct contagion via the interbank market, and firesale spirals. The central bank injects or withdraws liquidity on the interbank markets to achieve its desired interest rate target. A tension arises between the beneficial effects of stabilized interest rates and increased loan volume and the detrimental effects of higher risk taking incentives. We find that central bank supply of liquidity quite generally increases systemic risk.
This paper makes a conceptual contribution to the effect of monetary policy on financial stability. We develop a microfounded network model with endogenous network formation to analyze the impact of central banks' monetary policy interventions on systemic risk. Banks choose their portfolio, including their borrowing and lending decisions on the interbank market, to maximize profit subject to regulatory constraints in an asset-liability framework. Systemic risk arises in the form of multiple bank defaults driven by common shock exposure on asset markets, direct contagion via the interbank market, and firesale spirals. The central bank injects or withdraws liquidity on the interbank markets to achieve its desired interest rate target. A tension arises between the beneficial effects of stabilized interest rates and increased loan volume and the detrimental effects of higher risk taking incentives. We find that central bank supply of liquidity quite generally increases systemic risk.
This essay reviews a cornerstone of the European Banking Union project, the resolution of systemically important banks. The focus is on the inherent conflict between a possible intervention by resolution authorities, conditional on a crisis situation, and effective prevention prior to a crisis. Moreover, the paper discusses the rules for bail-in debt and conversion rules for different layers of debt. Finally, some organizational requirements to achieve effective resolution results will be analyzed.
On November 8, 2013, several members of the British House of Lords’ Subcommittee A conducted a hearing at the ECB in Frankfurt, Germany, on “Genuine Economic and Monetary Union and its Implications for the UK”. Professors Otmar Issing and Jan Pieter Krahnen were called as expert witnesses.
The testimony began with a general discussion on the elements considered necessary for a functioning internal market. Do economic union and monetary union require a fiscal union or even a political union, beyond the elements of the banking union currently being prepared? In this context, also the critique of the German current account surplus and the international expectations that Germany stimulate internal demand to support growth in crisis countries, were discussed.
With regard to the monetary union, the members of the subcommittee asked for an assessment of how European nations and the banking industry would have fared in the banking crisis that followed the Lehman collapse, had there not been a common currency. Given the important role that the ECB has played in the course of the crisis management, the members further asked for an evaluation of the OMT-program of the ECB and also if the monetary union is in need of common debt instruments, in order to provide the ECB with the possibility of buying EU liabilities, comparable to the Fed buying US Treasury bonds. Finally, the dual role of the ECB for monetary policy and banking supervision was an issue touched on by several questions.
This paper provides a systematic analysis of individual attitudes towards ambiguity, based on laboratory experiments. The design of the analysis allows to capture individual behavior across various levels of ambiguity, ranging from low to high. Attitudes towards risk and attitudes towards ambiguity are disentangled, providing pure measures of ambiguity aversion. Ambiguity aversion is captured in several ways, i.e. as a discount factor net of a risk premium, and as an estimated parameter in a generalized utility function. We find that ambiguity aversion varies across individuals, and with the level of ambiguity, being most prominent for intermediate levels. Around one third of subjects show no aversion, one third show maximum aversion, and one third show intermediate levels of ambiguity aversion, while there is almost no ambiguity seeking. While most theoretical work on ambiguity builds on maxmin expected utility, our results provide evidence that MEU does not adequately capture individual attitudes towards ambiguity for the majority of individuals. Instead, our results support models that allow for intermediate levels of ambiguity aversion. Moreover, we find risk aversion to be statistically unrelated to ambiguity aversion on average. Taken together, the results support the view that ambiguity is an important and distinct argument in decision making under uncertainty.
On January 29, 2014, EU Commissioner Barnier published a draft law proposing a ban for proprietary trading by big banks in Europe. In this opinion piece, published in a German newspaper on 30 January, 2014, Jan Pieter Krahnen, who was a member of the Liikanen Commission, argues that the proposal could prove to be effective in preventing systemic risk.
Fünf Jahre nach Beginn der Banken- und Staatsschuldenkrise („Finanzkrise“) kämpfen wir weiterhin mit den elementaren Problemen: Bei Märkten und Marktteilnehmern fehlt es an Stabilität und Vertrauen. Viele Banken stehen immer noch nicht auf eigenen Füßen und nehmen die ihnen in Europa traditionell zukommende zentrale Rolle für Wachstum und Entwicklung nicht wahr. Den guten Absichten, auf die sich die großen politischen Mächte während der ersten G-20 Treffen 2008 und 2009 verständigt hatten, ist eine Reihe von sinnvollen Ideen und Konzepten gefolgt. Die Voraussetzungen für einen grundlegenden reformerischen Erfolg sind somit gegeben – doch nun muss die Umsetzung folgen. Dazu bedarf es mutiger Entscheidungen. Im Jahr 2014 muss die europäische Politik gleich mehrere Weichen stellen. Der Bundesregierung kommt dabei die Schlüsselrolle zu. Sie muss den Mut haben zu radikaler Ordnungspolitik!
Stellungnahme zum Entwurf eines Gesetzes zur Umsetzung der Richtlinie 2014/59/EU (BRRD-Umsetzungsgesetz) der Bundesregierung vom 22.09.2014
Der Gesetzentwurf der Bundesregierung zur Umsetzung der EU-Richtlinie 2014/59/EU zur Festlegung eines Rahmens für die Sanierung und Abwicklung von Kreditinstituten und Wertpapierfirmen (“BRRD-Umsetzungsgesetz“) berührt auch die Frage der institutionellen Struktur für die Zuständigkeit für Bankenaufsicht und Geldpolitik. Es gibt gewichtige Gründe dafür, auf lange Sicht die Geldpolitik von der Bankenaufsicht und möglichen Bankenabwicklungs- und -restrukturierungsfragen institutionell zu trennen. Bei einer Trennung ist zu beachten, dass alle Institutionen für ihre jeweiligen Mandate gleichberechtigt auf erstklassige Daten über die Kapitalmärkte und die Transaktionen und Bilanzen der Banken zugreifen müssen. Ein Y-Modell, in dem zwei voneinander unabhängige Institutionen auf eine gemeinsame Datenbasis aufsetzen, kann im deutschen Kontext erreicht werden, indem die Bundesbank und die Bafin in einer Institution zusammengeführt werden, wobei sowohl die Aufsicht wie auch die Geldpolitik als Anstalt in der Anstalt (AIDA) geführt werden. Im Rahmen dieser „doppelten AIDA“-Lösung können beide Anstalten gleichberechtigt auf eine Datenbasis zugreifen. Die Daten werden im Rahmen der Mandate von Geldpolitik und Aufsicht wie bisher bundesweit erhoben. Die Entwicklung und spätere Einführung des Y-Modells („doppelte AIDA“) würde auch einen Modellcharakter für die noch zu führende Debatte um eine sinnvolle Institutionenstruktur für Europa haben.
Das Financial Stability Board (FSB) schlägt zur Lösung des "too big to fail"-Problems einen neuen Risikokapital-Puffer für global tätige systemrelevante Banken vor. Die Kennzahl „Total Loss Absorbing Capacity“ (TLAC), setzt sich zusammen aus hartem Kernkapital und verlustabsorbierendem Fremdkapital. Das verlustabsorbierende, also bail-in-fähige Fremdkapital soll vor anderen Positionen der Passivseite einer Bank in einer Krisensituation vorrangig haften oder aber in Eigenkapital umgewandelt werden. Jan Krahnen argumentiert, dass es für eine glaubhafte Verringerung des "too big to fail"-Problems auf die Anforderungen an das verlustabsorbierende Fremdkapital ankommt. Dass die Aufsicht die Halter von Bail-in Anleihen im Verlustfall tatsächlich einem Bail-in unterzieht ist vor allem nur dann glaubwürdig, wennn andere Banken nicht die Halter solcher Anleihen sind.
A recent proposal by the Financial Stability Board (FSB) suggests a new risk capital buffer for globally operating systemically important financial institutions. The suggested metric, “Total Loss Absorbing Capacity“ (TLAC), is composed of Tier-1 capital and loss absorbing debt. In a crisis situation, “bail-in-able” debt is to be written down or converted into equity. Jan Krahnen argues that the credibility of bail-in, in the case of systemically important financial institutions, hinges crucially on the design of TLAC and the requirements that will be placed on loss absorbing “bail-in-able” debt.The fear of direct systemic consequences through bail-in could be overcome, if a holding ban were placed on the “bail-in-bonds” of financial institutions. The holding ban would stipulate that these bonds cannot be held by other institutions within the banking sector.
Von Februar bis Juni 2015 hat die Europäische Zentralbank (EZB) die Notfall-Liquiditätshilfen (emergency liquidity assistance, ELA) für griechische Banken von 50 auf etwa 90 Milliarden Euro ausgeweitet. Dies hat zu einer Diskussion unter Wissenschaftlern, Politikern und Praktikern geführt, ob diese Liquiditätshilfen rechtmäßig sind. Es wurde der Vorwurf erhoben, die EZB trage bewusst zu einer Konkursverschleppung der bereits insolventen griechischen Banken bei.
Wir nehmen diesen Vorwurf zum Anlass, die Grundsätze des ELA-Programms genauer zu betrachten und die Frage zu diskutieren, ob das Programm in der aktuellen Situation rechtmäßig war. Zunächst beschreiben wir hierfür aus finanzwirtschaftlicher Perspektive die komplexe Beziehung zwischen der Europäischen Union, der EZB und den griechischen Banken. Dabei gehen wir insbesondere auf die wirtschaftspolitischen Grundsätze einer Währungsunion mit einer unvollständigen Fiskalunion (oder Haushaltskonsolidierung) ein. Vor diesem Hintergrund analysieren wir dann die Entscheidung der EZB, weiterhin Liquiditätshilfen an griechische Banken bereitzustellen. Wir kommen zu dem Ergebnis, dass das Vorgehen der EZB nicht als Konkursverschleppung zu bezeichnen ist.
The European Central Bank (ECB) increased the emergency liquidity assistance (ELA) for Greek banks from €50 billion in February 2015 to approximately €90 billion in June 2015. Its actions were accompanied by a discussion among academics, politicians and practitioners regarding the legitimacy of the ELA. Some have even accused the ECB of deliberately delaying the bankruptcy filing of already insolvent Greek banks.
We take the claim regarding insolvency delay as an opportunity to highlight the underlying economics of the ELA program and discuss its legitimacy in the current situation. We start by characterizing the complex interrelationship of the European Union, the ECB and the Greek banks through the lens of financial economics, with a particular focus on the political economy of a monetary union with incomplete fiscal union (or fiscal consolidation). Combining these two issues, we examine the decision of the ECB to continue the provision of ELA to Greek banks. Our conclusions, drawn from the analysis, do not support the claim that the ECB’s actions are consistent with a delayed filing for insolvency.
Mit Blick auf die gescheiterten Verhandlungen mit Griechenland, argumentiert Jan Krahnen im vorliegenden Policy Beitrag, dass eine zielführende Reformagenda nur von der gewählten Regierung Griechenlands formuliert werden kann. Die Euro-Staaten müssten Griechenland für die Zeitdauer einer Restrukturierungszeit eine Grundsicherung zusagen. Die EU-Staaten fordert Krahnen dazu auf, aus der Griechenlandkrise die notwendigen Konsequenzen zu ziehen. Auch die Eurozone brauche eine effektive Reformagenda. Die Verschuldungsdynamik innerhalb der Währungsunion, deren Auswüchse am Beispiel Griechenlands besonders deutlich werden, könne bei fehlendem guten Willen nur durch eine politische Union und eine in sie eingebettete Fiskalunion aufgelöst werden. Krahnen argumentiert, dass ein Weiterverhandeln über Restrukturierungsauflagen aus der derzeitigen verfahrenen Situation nicht herausführen wird. Entscheidend sei, ein mehr oder weniger umfassendes Paket zu schnüren, das Elemente eines teilweisen internationalen Haftungsverbunds mit Elementen eines partiellen nationalen Souveränitätsverzichts verbindet.
In light of the failed negotiations with Greece, Jan Krahnen argues that an effective reform agenda for Greece can only be designed by the elected government. Fundamental reforms will take time to take full effect and euro area member states will, in the meantime, have to offer Greece a basic level of economic security.
Krahnen demands that policy makers and the professional public involved view the Greek crisis as an opportunity to take the next necessary steps to formulate a reform agenda for the European Monetary Union. A community of supranational and non-party researchers and intellectuals could take the initiative and in a structured process develop a trustworthy and realistic concept that drafts the next big step towards a political union of Europe, including elements of a fiscal union.
The European Commission has published a Green Paper outlining possible measures to create a single market for capital in Europe. Our comments on the Commission’s capital markets union project use the functional finance approach as a starting point. Policy decisions, according to the functional finance perspective, should be essentially neutral (agnostic) in terms of institutions (level playing field). Our main angle, from which we assess proposals for the capital markets union agenda, are information asymmetries and the agency problems (screening, monitoring) which arise as a result. Within this perspective, we make a number of more specific proposals.
This note discusses the basic economics of central clearing for derivatives and the need for a proper regulation, supervision and resolution of central counterparty clearing houses (CCPs). New regulation in the U.S. and in Europe renders the involvement of a central counterparty mandatory for standardized OTC derivatives’ trading and sets higher capital and collateral requirements for non-centrally cleared derivatives.
From a macrofinance perspective, CCPs provide a trade-off between reduced contagion risk in the financial industry and the creation of a significant systemic risk. However, so far, regulation and supervision of CCPs is very fragmented, limited and ignores two important aspects: the risk of consolidation of CCPs on the one side and the competition among CCPs on the other side. i) As the economies of scale of CCP operations in risk and cost reduction can be large, they provide an argument in favor of consolidation, leading at the extreme to a monopoly CCP that poses the ultimate default risk – a systemic risk for the entire financial sector. As a systemic risk event requires a government bailout, there is a public policy issue here. ii) As long as no monopoly CCP exists, there is competition for market share among existing CCPs. Such competition may undermine the stability of the entire financial system because it induces “predatory margining”: a reduction of margin requirements to increase market share.
The policy lesson from our consideration emphasizes the importance of a single authority supervising all competing CCPs as well as of a specific regulation and resolution framework for CCPs. Our general recommendations can be applied to the current situation in Europe, and the proposed merger between Deutsche Börse and London Stock Exchange.
In the wake of the recent financial crisis, significant regulatory actions have been taken aimed at limiting risks emanating from trading in bank business models. Prominent reform proposals are the Volcker Rule in the U.S., the Vickers Report in the UK, and, based on the Liikanen proposal, the Barnier proposal in the EU. A major element of these reforms is to separate “classical” commercial banking activities from securities trading activities, notably from proprietary trading. While the reforms are at different stages of implementation, there is a strong ongoing discussion on what possible economic consequences are to be expected. The goal of this paper is to look at the alternative approaches of these reform proposals and to assess their likely consequences for bank business models, risk-taking and financial stability. Our conclusions can be summarized as follows: First, the focus on a prohibition of only proprietary trading, as envisaged in the current EU proposal, is inadequate. It does not necessarily reduce risk-taking and it likely crowds out desired trading activities, thereby negatively affecting financial stability. Second, there is potentially a better solution to limit excessive trading risk at banks in terms of potential welfare consequences: Trading separation into legally distinct or ring-fenced entities within the existing banking organizations. This kind of separation limits cross-subsidies between banking and proprietary trading and diminishes contagion risk, while still allowing for synergies across banking, non-proprietary trading and proprietary trading.