Because they little 10 dollar profits are all they can afford to handle. I'm riding this suckered to a couple bucks even if it takes all year. Don't really matter. It's all about the investment. And this one is a no brainer..
If I misread your question and refering the those of us with 13g and 13d forms. According to s.e.c from what I understand. We can't just load and unload shares all we want. There are rules.