Downside risk reduction using regime-switching signals: a statistical jump model approach

Yizhan Shu (), Chenyu Yu () and John M. Mulvey ()
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Yizhan Shu: Princeton University
Chenyu Yu: Princeton University
John M. Mulvey: Princeton University

Journal of Asset Management, 2024, vol. 25, issue 5, No 5, 493-507

Abstract: Abstract This article investigates a regime-switching investment strategy aimed at mitigating downside risk by reducing market exposure during anticipated unfavorable market regimes. We highlight the statistical jump model (JM) for market regime identification, a recently developed robust model that distinguishes itself from traditional Markov-switching models by enhancing regime persistence through a jump penalty applied at each state transition. Our JM utilizes a feature set comprising risk and return measures derived solely from the return series, with the optimal jump penalty selected through a time series cross-validation method that directly optimizes strategy performance. Our empirical analysis evaluates the realistic out-of-sample performance of various strategies on major equity indices from the US, Germany, and Japan from 1990 to 2023, in the presence of transaction costs and trading delays. The results demonstrate the consistent outperformance of the JM-guided strategy in reducing risk metrics such as volatility and maximum drawdown, and enhancing risk-adjusted returns like the Sharpe ratio, when compared to both hidden Markov model-guided strategy and the buy-and-hold strategy. These findings underline the enhanced persistence, practicality, and versatility of strategies utilizing JMs for regime-switching signals.

Keywords: Regime switching; Statistical jump models; Clustering; Bear markets; Market timing; Investment risk (search for similar items in EconPapers)
Date: 2024
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DOI: 10.1057/s41260-024-00376-x

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