Volatility in US and European Equity Markets: An Assessment of Market Quality
2002; Wiley; Volume: 5; Issue: 3 Linguagem: Inglês
10.1111/1468-2362.00103
ISSN1468-2362
AutoresDeniz Ozenbas, Robert A. Schwartz, R.J.K. Wood,
Tópico(s)Financial Risk and Volatility Modeling
ResumoThe paper examines intra–day share price volatility over the year 2000 for five market centres: the New York Stock Exchange, Nasdaq, the London Stock Exchange, Euronext Paris and Deutsche Börse. In each of these markets, we observe a U–shaped intra–day volatility pattern, a particularly sharp spike for the opening half hour, and a general level of intra–day volatility that is accentuated vis–à–vis volatility over longer differencing intervals, e.g. daily and weekly periods. We suggest that the volatility accentuation is attributable to spreads, market impact, price discovery and momentum trading — all of which are either trading costs or exist because of trading costs. Because the magnitude of trading costs depends in part on market design, we also suggest that a link exists between intra–day volatility and market structure, and that market quality/efficiency on both sides of the Atlantic could be improved.
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