In this paper, we propose a flexible tool to estimate the risk sensitivity of a high-dimensional portfolio composed of different classes of assets, especially in extreme risk circumstances. We build a so-called Cvine Risk Factors Model (CRFM), which is a non-linear version of a risk factor model...

The shocks on a stochastic system can be defined by means of either distribution, or variable. We relate these approaches and provide the link between the global and local effects of both types of shocks. These methodologies are used to perform stress-tests on the portfolio of financial...

Remarks at the New York Bankers Association Financial Services Forum, New York City.

Remarks at 2010 CFA Institute Fixed Income Management Conference, Newport Beach, California.

Remarks at the National Association for Business Economics Policy Conference, Arlington, Virginia

Joint written testimony before the Congressional Oversight Panel, Washington, D.C.

Remarks at Global Interdependence Center Central Banking Series Event, Federal Reserve Bank of Philadelphia.

Remarks by Brian P. Sack before the Money Marketeers of New York University, New York City.

Remarks at the Annual Meeting with Primary Dealers, New York City.

Ratios that indicate the statistical significance of a fund's alpha typically appraise its performance. A growing literature suggests that even in the absence of any ability to predict returns, holding options positions on the benchmark assets or trading frequently can significantly enhance...