From the link:
Sell signals are sell signals but what’s next is tricky given the velocity of today’s rebound (see the candle on the SPY chart below), but it did not quite reverse completely and it may have used up immediate buying power to get to where it got on the close. If so, chances are it reverses again to the downside tomorrow. The key will be play the open, preferably with either calls or puts, while looking to lock in profits on today’s gains on TQQQ and UPRO and any of the bellwether stocks.
P.S. What's with after-market and overnight futures traders? They often gap it up only to watch is slide down all day, or like today, they slam it down to watch it scream up all day. Are these guys vampires living on the blood of each other and shriveling in the sunshine?