2 mistakes: First was that I bought accidentally 100 shares instead of 1000. And the second one was that I reached my PTD-rule limit, so I couldn't sell at my target at $1.93 a few minutes later. So i was really pissed about it and hoped that it wouldn't drop hard and also thanked "faith" for the first mistake :D . Luckily I got rid of it first thing in the morning at the pre-market. Again $21 profit instead of $400.