$SQQ Proshares Ultra Short ETF. Inverted head and shoulders

With the recent selloff on the Nasdaq this ETF looks like it's building an inverted head and shoulders. Neckline of $15 can be watched. A break could signal a move up to $17.90. This ETF is 3x leveraged, so be aware of the risk in buying this. I have a position and looking to add with weakness.