Kb. Cyree et Db. Winters, An intraday examination of the federal funds market: Implications for the theories of the reverse-J pattern, J BUS, 74(4), 2001, pp. 535-556
The intraday literature suggests that returns, variances, and volume form a
n intraday reverse-J pattern. Two competing theories explain the observed p
atterns: private information about future security prices and trading stopp
ages. The Federal funds market allows a unique opportunity to study the cau
ses of intraday patterns because private information common to most markets
does not play a role in setting prices. We find reverse-J variance pattern
s while accounting for generalized autoregressive conditional heteroskedast
icity (GARCH) model effects. Our results support trading stops as an explan
ation for the reverse-J pattern and suggest that private information is not
a necessary condition for the observed pattern.