Instead of always flipping the stocks that move, I've started buying 100k shares the same way it's moving, while keeping the original position. (Is there a short name for this?)
I.e., until I can tell better where a stock is moving (no big news, just daily swings), I hold it both ways, instead of dumping or flipping. This way I neutralize any losses or gains on the stock, but probably add to commission.
It could also be that the last 5-6 days have been tough in general on most traders, and that it's a coincidence....Ā