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Momentum, idiosyncratic volatility and market dynamics: Evidence from China

Muhammad Cheema and Gilbert Nartea ()

Pacific-Basin Finance Journal, 2017, vol. 46, issue PA, 109-123

Abstract: Recent evidence on the relation between momentum and idiosyncratic volatility (IV) in the U.S. is mixed. We verify the relation between momentum and IV in China and find at best, no relation, supporting the view that idiosyncratic risk is not a significant arbitrage cost for momentum returns. While the absence of a positive relation between momentum returns and IV rejects both the underreaction and the overconfidence and self-attribution stories of momentum, we find support for the overconfidence and self-attribution story from our results on market dynamics and momentum. Our results are robust when verified in other Asian markets. We also find support for the suggestion that cross-country differences in momentum returns could be the result of differences in market dynamics rather than differences in levels of individualism as suggested earlier in the literature.

Keywords: Momentum; Idiosyncratic volatility; Market dynamics; Arbitrage cost; Overconfidence (search for similar items in EconPapers)
JEL-codes: G12 G14 (search for similar items in EconPapers)
Date: 2017
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