Pro‐cyclicality beyond business cycle
نویسندگان
چکیده
Abstract We show that pro‐cyclicality is inherent in risk measure estimates based on historical data. Taking the example of VaR, we empirical VaR mean‐reverting over a 1‐year horizon when portfolio held fixed. It means capital requirement rule measurements tends calm times to understate future required and volatile overstate it. To quantify this pro‐cyclicality, develop simple efficient methodology, which apply major equity market indices. make interesting point property holds true even world with constant volatility, though magnitude mean‐reversion greater than what would be observed special case.
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ژورنال
عنوان ژورنال: Mathematical Finance
سال: 2022
ISSN: ['0960-1627', '1467-9965']
DOI: https://doi.org/10.1111/mafi.12369