So the price jumped from 17 to 19.8 for a 2.8 gain, if you bought low and sold at the top. Volume is in the hundreds of thousands, not millions.
I don't trade those stocks because I don't know how to size such orders to stay under the radar and not provoke reactions... 100, 1000, 10000 shares?
In some ways this goes back to discussions over % vs absolute numbers. Since the difficulty is to enter and exit a position, I want to maximize my returns each time.