It's called manipulation. Their clients knew about the upgrade Friday and before, and got it, and they're selling their shares to the shorts. Today retail sales came in very disappointing. I wouldn't be surprised to see DECK give up the gains.
Contrary to what you think. Investors BUY on weak report and sell on GOOD reports. See, when their is a weak report, the value comes in as a company projecting grwoth like Deckers, with a very popular and reliable product becomes very cheap compared to companies not as popular and not as reliable.
Sure, Goldman Sachs and Tiger Global Management(both bought in the 30's and still holding according to major holders WERE JUST SO HORRIBLY wrong with their investment choices these last last 9 months. What did they do? Oh, just doubled their money.
Insiders must hate money too as they are not selling. Just holding nice and tight.
Company makes tremendous cash, product most popular last christmas, company growing stores and products, buying back shares, trading for JUST 2B. This is a joke.