Publications
Publications
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- Faculty Publications (12)
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- January 2025
- Article
Reducing Prejudice with Counter-stereotypical AI
By: Erik Hermann, Julian De Freitas and Stefano Puntoni
Based on a review of relevant literature, we propose that the proliferation of AI with human-like and social features presents an unprecedented opportunity to address the underlying cognitive and affective drivers of prejudice. An approach informed by the psychology of... View Details
- 2023
- Working Paper
Uniform Rate Setting and the Deposit Channel
By: Juliane Begenau and Erik Stafford
U.S. banks predominantly use uniform deposit rate setting policies, particularly the largest banks. Uniform rate setting ignores local market concentration, and is therefore inconsistent with the identification strategy used to provide cross-sectional evidence of the... View Details
- 2021
- Working Paper
Limits to Bank Deposit Market Power
By: Juliane Begenau and Erik Stafford
Claims about the market power of bank deposits in the banking literature are numerous and far reaching. Recently, a causal narrative has emerged in the banking literature: market power in bank deposits, measured as imperfect pass-through of short-term market rates on... View Details
- 2019
- Working Paper
Do Banks Have an Edge?
By: Juliane Begenau and Erik Stafford
Overall, no! We show that the level and time series variation in cash flows for most bank activities are well matched by capital market portfolios with similar interest rate and credit risk to what banks report to hold. Ignoring operating expenses, bank loans earn high... View Details
Keywords: Banks; Market Efficiency; Bank Capital; Bank Debt; CAPM; Banking; Bank Deposits; Bank Funding Advantage; Leverage; Maturity Transformation; Replicating Portfolio; Efficiency; Banks and Banking; Capital Markets; Performance Evaluation; Performance Efficiency; Banking Industry; United States
- Article
The Cost of Capital for Alternative Investments
By: Jakub W. Jurek and Erik Stafford
Traditional risk factor models indicate that hedge funds capture pre-fee alphas of 6% to 10% per annum over the period from 1996 to 2012. At the same time, the hedge fund return series is not reliably distinguishable from the returns of mechanical S&P 500 put-writing... View Details
- 2011
- Working Paper
The Cost of Capital for Alternative Investments
By: Jakub W. Jurek and Erik Stafford
This paper studies the cost of capital for alternative investments. We document that the risk profile of the aggregate hedge fund universe can be accurately matched by a simple index put option writing strategy that offers monthly liquidity and complete transparency... View Details
- Article
The Economics of Structured Finance
By: Joshua D. Coval, Jakub W. Jurek and Erik Stafford
This paper investigates the spectacular rise and fall of structured finance. The essence of structured finance activities is the pooling of economic assets like loans, bonds, and mortgages, and the subsequent issuance of a prioritized capital structure of claims, known... View Details
Keywords: Financial Crisis; Asset Management; Debt Securities; Investment; Risk Management; Behavior
- April 2008 (Revised December 2008)
- Case
Leveraged Loans 2007
By: Andre F. Perold and Erik Stafford
The leveraged loan market was in a crisis during the summer of 2007, following many years of low realized volatility (less than 4% per annum), an index of leveraged loans had fallen over 5% in the month of July. A sudden drop in capital market prices for an asset class... View Details
- March 2008
- Course Overview Note
Dynamic Markets
By: Joshua D. Coval and Erik Stafford
The Dynamic Markets course at Harvard Business School is organized around the hands-on application of financial decision making in a wide variety of capital market settings. The course relies heavily on in-class simulations of a range of market settings where students... View Details
- January 2008
- Background Note
Index Options
By: Joshua Coval and Erik Stafford
The goal of this simulation is to understand the patterns in index option prices that are not predicted by the Black-Scholes model. In particular, the simulation focuses on two properties of options prices. First, at-the-money implied volatilities from index options... View Details
Keywords: Volatility; Stock Options; Investment; Price; Profit; Risk Management; Mathematical Methods
- 2007
- Case
Deriving by Doing: A New Approach to Teaching Finance
By: Joshua Coval, Jonathan Gadzik and Erik Stafford
- October 2000 (Revised April 2001)
- Case
Cost of Capital at Ameritrade
By: Mark L. Mitchell and Erik Stafford
Ameritrade Holding Corp. is planning large marketing and technology investments to improve the company's competitive position in deep-discount brokerage by taking advantage of emerging economies of scale. In order to evaluate whether the strategy would generate... View Details