Friday “Check-Ups”
Be sure to check markets before the close on Friday. Often the situation is
clearer at the end of the week. In such cases, a better entry or exit can
usually be obtained on Friday near the close than on the following Monday
opening. This rule is particularly important if you are holding a significant
position.
–Jack Schwager, from Schwager on Futures: Technical Analysis (1996,
John Wiley & Sons, New York).