I have a list of 156 blue chips that are all very active and been around for over 10 years. The tables below are aggregated numbers from all 156 of them:
xHL has been dangerous OC but OK CO. The most recent 72 day period suggests that the rewards might not be worth the potential aggravation.
o3 is favorable to play CO, but if it wins c3 will appear where it looks like the best move is to get out OC. If CO loses, OC is slightly positive on a dubious win rate.
The time to add size was last night, the bulls seem to have the upper hand but the 390 area is still above us.