With the stock market down about 4% today and tomorrow (Friday) being an options expiration day, market volatility is all but certain. Be on the right side of the May options bets and you could be rewarded handsomely, otherwise the losses could be heavy.
Here's my market prediction for Friday, down for most of the day and then going positive in the last 1-2 hours. It's a familiar pattern, I've seen it many times.