Quote from syswizard:
Yep, couldn't agree more. When I was trading Prop, I had this great short position that was getting wildly profitable, very quickly. I held for 30 minutes...and said "I'm going to let these profits run....I'm not going to be shaken out". Well, 5 minutes later, there was a giant short covering rally, and I lost 50% of my profits almost instantly. I got out for a meager profit. My manager came over and said "what the hell are you doing ?". He thought I should have taken that big profit early...and he was right. I, of course, was a newbie to daytrading.
Sounds like your manager was exercising his lookback option on you and was being a jerk.