The final OpEx of the year coming up after an extremely violent selloff post FOMC (relative to implied pricing.) Pre-OpEx week has seen stable gains in 7-DTE SPX Straddles for the last 3 years. The OpEx itself remains relatively dull:
1-DTE Straddles rarely pay, however, index sees a slight negative drift throughout the day.
The positive overnight drift up to 2021 flipped to fairly regular negative drift into the US RTH open.
RTH session largely negative drift throughout the day, post London Close some relief into the close:
Latter half of the day generally very quiet, last 10 mins straddles no major winners:
Is this based on AM or PM SPX contracts