Used to do it all the time.
I was 8 for 9.
Than I saw it posted about on here. I luckily cut back my size than eventually quit.
Now I've seen 12 for 35.
Ratio got much worse and when they go against you it's a lot more than what you make on the plus side
DGX comes to mind as it gapped down .60 on the close
ATH (I have to double check as not sure if it was this stock) but my office can tell you about him running it up .80 and on the last print gapping down over a point.