Pretty clear now, they sold to open taking it as free easy money knowing they had a million shares to dump in the morning. Should have sold the 21's if it was a smart trader. Probably Goldman. At least the good news is my Oct 22's look to expire worthless and I'll resell with a pop at earnings.
Wasn't me though I'm trying to roll my large order 22's to Nov for a buck ten cr. Pretty decent trade after selling them for a buck last month. If it flies way past my 22 before I roll I'll be #$%$... we'll see soon enough. But there was large open interest for the 22 strike, might have been closing. FTNT is cheap but the market is ready roll over and might take us with it.