It is great in some case but in others not.
I went long the UYG around 9:45 sold about 20 mins later for a small profit, I looked back at it around 12 and saw it trading 2 dollars lower from where I sold it and was glad I sold. By the 4pm closing it was up about $2.50 from its Intraday low. Crazy volatility, this will continue for the next month I think, especially with all these rumors around.