Assistant Professor of Finance, University of Luxembourg

Research Affiliate, Centre for Economic Policy Research (CEPR)

 

Address:

6 Rue Richard Coudenhove-Kalergi                

L-1359 Luxembourg        

 

Phone: +352 466 644 5424

Email: diane.pierret@uni.lu

 

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Link to CV | Google Scholar



Research interests:

Banking, financial intermediation, liquidity risk, systemic risk, regulation, monetary policy

Recent research

The Visible Hand when Revenues Stop: Evidence from Loan and Stock Markets during COVID-19 (with François Koulischer and Roberto Steri), April 2021.

Abstract: We document that public interventions in the corporate sector during the COVID-19 pandemic help firms access bank loans, cushion liquidity shortfalls, and boost their market valuations. We use firm-level data on COVID-19-related news to trace firms’ liquidity shocks in several European countries, which differ in public spending for fiscal stimulus and debt guarantees to corporations. As market valuations rebound in spite of the deterioration of firms’ revenues, interventions drive a part of the disconnect between markets and the real economy. Remarkably, the financial sector internalizes part of the benefits of interventions targeting non-financial firms. To interpret these results, we lay out a moral hazard model of corporate borrowing and public interventions. The model suggests that interventions in the corporate sector are effective to mitigate incentive problems leading to credit market failures. Lenders benefit from loan guarantees as a compensation to finance firms with severe debt overhang problems.

Presentations: ECB, BPI-Nova SBE Conference on “Corporate Bankruptcy and Restructuring”, CEPR-Norges Bank Conference on “Frontier Research in Banking”, AEA, Université Catholique de Louvain, Nazarbayev University Graduate School of Business, Benelux Banking Research Day, Swiss Winter Conference on Financial Intermediation, BCBS-CGFS conference on "How effective were policy measures in supporting bank lending during the Covid-19 crisis?"*

Stressed Banks (with Roberto Steri), November 2020.

Abstract: We investigate the risk taking of "stressed banks" — the large financial institutions that have been facing unprecedented regulatory supervision and capitalization requirements. We take steps towards identifying how supervision affects risk taking in the banking system. Supervision in Dodd-Frank Act distinctly improves borrower rating by 0.7 rating classes. Banks respond to supervision heterogeneously, depending on the capital charges associated with their investments. Ignoring the confounding effect of capital requirements misleads the conclusion that Dodd-Frank Act supervision is ineffective. Our results indicate that “stressed banks” are beneficial to financial stability as they are better capitalized and engage in safer lending.

Featured in:

International Banker, "The Role of Stress-Test Supervision" (3/25/2019)

SFI's Practitioner Roundups August 2018

HECimpact November 2017

Covered in Le Temps (8/6/2018), Allnews (6/27/2018)

Presentations: Luxembourg School of Finance, McGill University, Danmarks Nationalbank, BI Norwegian Business School, European Central Bank, Vienna Graduate School of Finance, Norges Bank, FINMA, IESE, Erasmus School of Economics, Bank of England, VU Amsterdam, Deutsche Bundesbank, Federal Reserve Board, Swiss National Bank, CRM Montreal Systemic Risk workshop, ELTE Budapest workshop on Stress Testing and Capital Requirements, 2017 Santiago Finance workshop, 11th Swiss Winter Conference on Financial Intermediation, 2018 Lausanne-Cambridge workshop, 5th Empirical Financial Intermediation Research Network, FEBS 2018, 35th Annual Conference of the French Finance Association, 4th IWH-FIN-FIRE Workshop on "Challenges for Financial Stability", 1st Endless Summer Conference on Financial Intermediation and Corporate Finance, 2018 Federal Reserve Stress Testing Research Conference, CEPR Systemic Risk and Macroprudential Policy conference of the Bank of Israel, Showcasing Women in Finance - EU, 10th European Banking Center Network, Marstrand Finance Conference, WFA, European System of Central Banks' Day‐Ahead Conference, AEA, EFA

Similar Investors (with Co-Pierre Georg and Sascha Steffen), February 2020.

Abstract: Consistent with theoretical predictions, we show that investors incorporate expected joint liquidation costs in their portfolio decisions. Using detailed security-level holdings of U.S. Money Market Mutual Funds (MMFs), we construct a new measure of portfolio similarity among investors and show that investors actively manage asset holdings as a function of how similar their portfolios are with those of other investors. They are less likely to roll over investments and they decrease funding when similarity increases. At the issuer level, average similarity also predicts her total funding in the next period. Importantly, issuers are unable to fully replace the loss in funding when similar investors withdraw.

Presentations: Norwegian School of Economics, CEBRA, BoE-CEPR-Imperial-LSE Conference on Non-bank Financial Sector and Financial Stability, Knut Wicksell Conference in Financial Intermediation, 13th Swiss Winter conference on Financial Intermediation (cancelled), Chicago Financial Institutions Conference (cancelled), CONSOB-ESMA-Bocconi serminar “Securities markets. Trends, risks and policies”

Coming Next

  • BCBS-CGFS conference on "How effective were policy measures in supporting bank lending during the Covid-19 crisis?", Basel, May 2022

  • Financial Intermediation Research Society (FIRS), Budapest, June 2022

  • 11th MoFiR Workshop on Banking, Lisbon, July 2022