Physics – Condensed Matter – Statistical Mechanics
Scientific paper
2000-11-17
International Journal of Theoretical and Applied Finance, Vol. 6, No. 7 (2003) 739-765
Physics
Condensed Matter
Statistical Mechanics
15 pages, as presented at the Complexity Workshop in Aix-en-Provence
Scientific paper
10.1142/S0219024903002171
We simulate a series of daily returns from intraday price movements initiated by microstructure elements. Significant evidence is found that daily returns and daily return volatility exhibit first order autocorrelation, but trading volume and daily return volatility are not correlated, while intraday volatility is. We also consider GARCH effects in daily return series and show that estimates using daily returns are biased from the influence of the level of prices. Using daily price changes instead, we find evidence of a significant GARCH component. These results suggest that microstructure elements have a considerable influence on the return generating process.
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