Yesterday I tried shorting CPXX twice @ 10.80 for a breakdown, and it bounced back on me and it went back up to 11 every time. 

This is not a setup I'm really familiar with: shorting into morning spikes. I tried to do that yesterday but it did not really work out. I cut losses quickly though.

What I learned from this, I learned from Tim's comments: When a stock surprises you - and CPXX did surpise - stay away: the rules would have changed.

No other play for me yesterday.

Have you had the same difficulties as me yesterday? Let me know what you think in the comments.