AHT $5.75 Quadruple witching day 6/18 tomorrow:
"Quadruple Witching day is actually an investment term that was coined as the name for the specific day that stock options, index options, stock futures, and index futures all expire simultaneously. This occurs only four times a year on the third Friday in the months of March, June, September, and December. The increase in trading volume on Witching days might lead to above average volatility."