Harris, Lawrence; Sofianos, George; Shapiro, James E - In: Review of Financial Studies 7 (1994) 4, pp. 653-85
Program trading and intraday changes in the S&P 500 Index are correlated. Future prices and, to a lesser extent, cash prices lead program trades. Index extent, cash prices lead program trades. Index arbitrage trades are followed by an immediate change in the cash index, which ultimately reverses...