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We focus on the role of social media as a high-frequency, unfiltered mass information transmission channel and how its use for government communication affects the aggregate stock markets. To measure this effect, we concentrate on one of the most prominent Twitter users, the 45th President of the United States, Donald J. Trump. We analyze around 1,400 of his tweets related to the US economy and classify them by topic and textual sentiment using machine learning algorithms. We investigate whether the tweets contain relevant information for financial markets, i.e. whether they affect market returns, volatility, and trading volumes. Using high-frequency data, we find that Trump’s tweets are most often a reaction to pre-existing market trends and therefore do not provide material new information that would influence prices or trading. We show that past market information can help predict Trump’s decision to tweet about the economy.
Against the background of the European debt crisis, the Research Center SAFE, in the fall of 2013, had issued a call for papers on the topic “Austerity and Economic Growth: Concepts for Europe”, with the objective of soliciting research proposals focusing on the nature of the relationship between austerity, debt sustainability and growth. Each of the five funded projects brought forth an academic paper and a shortened, non-technical policy brief. These policy papers are presented in the present collection of policy letters, edited by Alfons Weichenrieder.
The first paper by Alberto Alesina, Carlo Favero and Francesco Giavazzi looks into the question of how fiscal consolidations influence the real economy. Harris Dellas and Dirk Niepelt emphasize that fiscal austerity is a signal that investors use to tell apart governments with high and low default costs that accordingly will have a high or low probability of repayment.The paper by Benjamin Born, Gernot Müller and Johannes Pfeiffer,looks at the impact of austerity measures on government bond spreads. Oscar Jorda and Alan M. Taylor, in the fourth contribution, put into question whether the narrative records of fiscal consolidation plans are really exogenous. The final study by Enrique Mendoza, Linda Tesar and Jing Zhang suggests that fiscal consolidation should largely depend on expenditure cuts, rather than tax increases that may fail, when fiscal space is exhausted.
Nach der Bundestagswahl am 26. September 2021 wird sich die künftige Bundesregierung mit einer Reihe drängender Herausforderungen befassen müssen. Aus Sicht des Leibniz-Instituts für Finanzmarktforschung SAFE haben die folgenden, miteinander verbundenen Einzelpunkte dabei Priorität:
1. Schaffung eines ordnungspolitischen Pakets zur Sicherung globaler Gemeinschaftsgüter, wie etwa des Klimas
2. Initiative zum Aufbau notwendiger Datensätze und Standards für eine zielgenaue Nachhaltigkeitsgestaltung an den Finanzmärkten
3. regulatorischer Fahrplan zur Erfassung, Ermöglichung und Einhegung einer digitalen Transformation des Finanzsystems
4. Vollendung der Bankenunion, insbesondere durch einen „europäischen Schlussstein“: der Schaffung einer einheitlichen Aufsicht und Letztabsicherung
5. Durchbrechung des „Doom-Loop“ zwischen Staaten und Banken in Europa, insbesondere durch Begrenzung des Umfangs, in dem eigene Staatsanleihen im Portfolio von Banken liegen dürfen
6. ernsthafter Versuch zur Schaffung eines einheitlichen und integren europäischen Kapitalmarkts mit einer Aufsicht nach US-Vorbild
7. Banken- und Kapitalmarktunion als wesentliche Bausteine für eine grundlegende Reform der Altersversorgung mit mehr Teilhabe aller Bürger:innen an der Leistungsentwicklung der Volkswirtschaft