Abstract
We apply extreme value analysis to us sectoral stock indices in order to assess whether tail risk measures like value-at-risk and extremal linkages were significantly altered by 9/11. We test whether semi-parametric quantile estimates of ‘downside risk’ and ‘upward potential’ have increased after 9/11. The same methodology allows one to estimate probabilities of joint booms and busts for pairs of sectoral indices or for a sectoral index and a market portfolio. The latter probabilities measure the sectoral response to macro shocks during periods of financial stress (so-called ‘tail-ßs’). Taking 9/11 as the sample midpoint we find that tail-ßs often increase in a statistically and economically significant way. This might be due to perceived risk of new terrorist attacks.
Original language | English |
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Pages (from-to) | 17-42 |
Number of pages | 26 |
Journal | Journal of Applied Econometrics |
Volume | 23 |
Issue number | 1 |
DOIs | |
Publication status | Published - 1 Jan 2008 |