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Risk Estimation via Regression

Author

Listed:
  • Mark Broadie

    (Graduate School of Business, Columbia University, New York, New York 10027)

  • Yiping Du

    (Industrial Engineering and Operations Research, Columbia University, New York, New York 10027)

  • Ciamac C. Moallemi

    (Graduate School of Business, Columbia University, New York, New York 10027)

Abstract

We introduce a regression-based nested Monte Carlo simulation method for the estimation of financial risk. An outer simulation level is used to generate financial risk factors and an inner simulation level is used to price securities and compute portfolio losses given risk factor outcomes. The mean squared error (MSE) of standard nested simulation converges at the rate k −2/3 , where k measures computational effort. The proposed regression method combines information from different risk factor realizations to provide a better estimate of the portfolio loss function. The MSE of the regression method converges at the rate k −1 until reaching an asymptotic bias level which depends on the magnitude of the regression error. Numerical results consistent with our theoretical analysis are provided and numerical comparisons with other methods are also given.

Suggested Citation

  • Mark Broadie & Yiping Du & Ciamac C. Moallemi, 2015. "Risk Estimation via Regression," Operations Research, INFORMS, vol. 63(5), pages 1077-1097, October.
    • Handle: RePEc:inm:oropre:v:63:y:2015:i:5:p:1077-1097
    DOI: 10.1287/opre.2015.1419
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    References listed on IDEAS

    as
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