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- W1619691465 abstract "In this brief research paper, I explore patterns in intraday return and volume correlation between the S&P 500 and sector indices, as represented by minutely data from Aug. 23 to Oct. 1 for the SPDR exchange-traded funds. Notably, there is evidence of two previously unreported time-of-day effects. First, there is a U-shaped'' pattern in return correlation, characterized by higher correlation at open and close and lower correlation during mid-day hours. Second, volume correlation is marked by lower values in the morning and increasing values in the afternoon. In some cases, this trend even takes the infamous hockey-stick'' shape, exhibiting stable values in the morning but sharply increasing values in the late afternoon. To ensure that these patterns are not a function of the choice of correlation window size, I confirm that these patterns are qualitatively stable over correlation windows ranging from 10 minutes to 90 minutes. These findings indicate that non-time-stationary patterns exist not only for volume and volatility, as previously reported, but also for the correlation of return and volume between the market and sector indices. These results have possible implications for intraday market efficiency and for trading strategies that rely on intraday time-stationarity of return or volume correlation." @default.
- W1619691465 created "2016-06-24" @default.
- W1619691465 creator A5085629068 @default.
- W1619691465 date "2010-01-01" @default.
- W1619691465 modified "2023-09-23" @default.
- W1619691465 title "Intraday Correlation Patterns between the S&P 500 and Sector Indices" @default.
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- W1619691465 doi "https://doi.org/10.2139/ssrn.1677915" @default.
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