Search Results
Working Paper
A New Tool for Robust Estimation and Identification of Unusual Data Points
Most consistent estimators are what Müller (2007) terms “highly fragile”: prone to total breakdown in the presence of a handful of unusual data points. This compromises inference. Robust estimation is a (seldom-used) solution, but commonly used methods have drawbacks. In this paper, building on methods that are relatively unknown in economics, we provide a new tool for robust estimates of mean and covariance, useful both for robust estimation and for detection of unusual data points. It is relatively fast and useful for large data sets. Our performance testing indicates that our baseline ...
Discussion Paper
Stabilizing the Tri-Party Repo Market by Eliminating the “Unwind”
On July 6, 2011, the Task Force on Tri-Party Repo Infrastructure—an industry group sponsored by the New York Fed—released a Progress Report in which it reaffirmed the goal of eliminating the wholesale “unwind” of repos (and the requisite extension of more than a trillion dollars of intraday credit by repo clearing banks), but acknowledged unspecified delays in achieving that goal. The “unwind” is the settlement of repos that currently takes place each morning and replaces credit from investors with credit from the clearing banks. As I explain in this post, by postponing settlement ...
Discussion Paper
The Fragility of an MMF-Intermediated Financial System
Since the financial crisis of 2007-09—and, in particular, the run on prime money market funds (MMFs) in September 2008—policymakers have been concerned that the funds’ fragility may render banks themselves more susceptible to risk. For instance, in a recent article and speech arguing in favor of MMF reform, New York Fed President Bill Dudley stated that MMF fragility may contribute to financial market systemic risk. The idea that the susceptibility of MMFs to runs may make the financial system more unstable seems intuitive, but is it correct? In this post, we show that the idea isn’t ...