Ernst Schaumburg

Federal Reserve Bank of New York
33 Liberty Street
New York, NY 10045

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NBER Working Papers and Publications

June 2011A Functional Filtering and Neighborhood Truncation Approach to Integrated Quarticity Estimation
with Torben G. Andersen, Dobrislav Dobrev: w17152
We provide a first in-depth look at robust estimation of integrated quarticity (IQ) based on high frequency data. IQ is the key ingredient enabling inference about volatility and the presence of jumps in financial time series and is thus of considerable interest in applications. We document the significant empirical challenges for IQ estimation posed by commonly encountered data imperfections and set forth three complementary approaches for improving IQ based inference. First, we show that many common deviations from the jump diffusive null can be dealt with by a novel filtering scheme that generalizes truncation of individual returns to truncation of arbitrary functionals on return blocks. Second, we propose a new family of efficient robust neighborhood truncation (RNT) estimators for int...

Published: Andersen, Torben, Dobrislav Dobrev and Ernst Schaumburg. 2014. A Robust Neighborhood Truncation Approach to Estimation of Integrated Quarticity. Econometric Theory. 30: 3-59.

November 2009Jump-Robust Volatility Estimation using Nearest Neighbor Truncation
with Torben G. Andersen, Dobrislav Dobrev: w15533
We propose two new jump-robust estimators of integrated variance based on high-frequency return observations. These MinRV and MedRV estimators provide an attractive alternative to the prevailing bipower and multipower variation measures. Specifically, the MedRV estimator has better theoretical efficiency properties than the tripower variation measure and displays better finite-sample robustness to both jumps and the occurrence of "zero'' returns in the sample. Unlike the bipower variation measure, the new estimators allow for the development of an asymptotic limit theory in the presence of jumps. Finally, they retain the local nature associated with the low order multipower variation measures. This proves essential for alleviating finite sample biases arising from the pronounced intraday v...

Published: Andersen, Torben G. & Dobrev, Dobrislav & Schaumburg, Ernst, 2012. "Jump-robust volatility estimation using nearest neighbor truncation," Journal of Econometrics, Elsevier, vol. 169(1), pages 75-93. citation courtesy of

October 2009Causes of the Great Recession of 2007-9: The Financial Crisis is the Symptom not the Disease!
with Ravi Jagannathan, Mudit Kapoor: w15404
Globalization has made it possible for labor in developing countries to augment labor in the developed world, without having to relocate, in ways not thought possible only a few decades ago. We argue that this large increase in the developed world's effective labor supply, triggered by geo-political events and technological innovations, coupled with the inability of existing institutions in the US and developing nations themselves to cope with this shock set the stage for the great recession. The financial crisis in the US was but the first acute symptom.

Published: Jagannathan, Ravi, Mudit Kapoor and Ernst Schaumburg. 2013. Causes of the Great Recession of 2007-9: The Financial Crisis Was the Symptom Not the Disease! . Journal of Financial Intermediation. 22(1): 4-29.

May 2006Intertemporal Disturbances
with Giorgio E. Primiceri, Andrea Tambalotti: w12243
Disturbances affecting agents intertemporal substitution are the key driving force of macroeconomic fluctuations. We reach this conclusion exploiting the bond pricing implications of an estimated general equilibrium model of the U.S. business cycle with a rich set of real and nominal frictions.
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