Search Results
Report
Nonparametric pricing of multivariate contingent claims
In this paper, I derive and implement a nonparametric, arbitrage-free technique for multivariate contingent claim (MVCC) pricing. Using results from the method of copulas, I show that the multivariate risk-neutral density can be written as a product of marginal risk-neutral densities and a risk-neutral dependence function. I then develop a pricing technique using nonparametrically estimated marginal risk-neutral densities (based on options data) and a nonparametric dependence function (based on historical return data). By using nonparametric estimation, I avoid the pricing biases that result ...
Report
A general approach to integrated risk management with skewed, fat-tailed risks
The goal of integrated risk management in a financial institution is to measure and manage risk and capital across a range of diverse business activities. This requires an approach for aggregating risk types (market, credit, and operational) whose distributional shapes vary considerably. In this paper, we use the method of copulas to construct the joint risk distribution for a typical large, internationally active bank. This technique allows us to incorporate realistic marginal distributions that capture some of the essential empirical features of these risks-such as skewness and fat ...
Report
The effect of employee stock options on bank investment choice, borrowing, and capital
In this paper, we test the hypothesis that granting employee stock options motivates CEOs of banking firms to undertake riskier projects. We also investigate whether granting employee stock options reduces the bank's incentive to borrow while inducing a buildup of regulatory capital. Using a sample of 549 bank-years for publicly traded banks from 1992 to 2002, we find some evidence that the bank's equity volatility (total as well as residual) and asset volatility increase as CEO stock option holdings increase. In addition, it appears that granting employee stock options motivates banks to ...
Report
Stock returns and volatility: pricing the short-run and long-run components of market risk
We decompose the time series of equity market risk into short- and long-run volatility components. Both components have negative and highly significant prices of risk in the cross section of equity returns. A three-factor model with the market return and the two volatility components compares favorably to benchmark models. We show that the short-run component captures market skewness risk, while the long-run component captures business cycle risk. Furthermore, short-run volatility is the more important cross-sectional risk factor, even though its average risk premium is smaller than the ...
Report
How do treasury dealers manage their positions?
Using thirty-one years of data (1990–2020) on U.S. Treasury dealer positions, we find that Treasury issuance is the main driver of dealers’ weekly inventory changes. Such inventory fluctuations are only partially offset in adjacent weeks and not significantly hedged with futures. Dealers are compensated for inventory risk by means of subsequent price appreciation of their holdings. Amid increased balance sheet costs attributable to post-crisis regulatory changes, dealers significantly reduce their position taking and lay off inventory faster. Moreover, the increased participation of ...
Speech
Why do risk events occur? Insights from accident models: remarks at the 7th Annual Risk Americas 2018 Conference, New York City
Remarks at the 7th Annual Risk Americas 2018 Conference, New York City.
Report
The impact of CEO turnover on equity volatility
A change in executive leadership is a significant event in the life of a firm. This study investigates an important consequence of a CEO turnover: a change in equity volatility. We develop three hypotheses about how changes in CEO might affect stock price volatility, and test these hypotheses using a sample of 872 CEO turnovers over the 1979-95 period. We find that volatility increases following a CEO turnover, even when the CEO leaves voluntarily and is replaced by someone from inside the firm. Forced turnovers increase volatility more than voluntary turnovers - a finding consistent with the ...
Speech
Operational risk management at the Federal Reserve Bank of New York
Remarks at the 18th Annual OpRisk North America 2016 conference, New York City.
Speech
Thrive in Any Environment: Strengthening Resilience Through Risk Management
Remarks at the Risk USA Conference, New York City.