Up 5% today it was a great day to own/trade commodity stocks on the TSX. Every losing position on Friday reversed to being a winner today ( some in a major way ), suggesting the market makers on the option side were pretty busy suppressing stock prices Friday from roughly 11 am forward. Second straight month this occurred. I will not be buying anything next monthly options expiry until 3:30 pm, and will carry a healthy cash balance into that Friday.
I used to trade options a fair bit those experiences are helping understand some of the dynamics in play.