ATOS is at the bottom of its longer term swing trading range. At the bottom of the range it completed a bullish butterfly pattern and did a bullish engulfing candlestick a couple of days later.
Right now ATOS is trying to chew through 5.00 to 5.70. If it can hold this range, then it could build cause for a move back deeper into the swing trading range and possibly an eventual attack on 12 dollars again.