Had a short queued up for DXC because they jumped up 9% all day yesterday. Overnight it was still going up, but a few seconds before markets opened it dipped a whole 2%. I decided to hold off for a second. It started sliding down even more, so I joined in. It didn't go down much more before it swung back up. I was caught in the -$200 range for the next 15 minutes It finally came down and I cut for $237.