Buy at confluence of support

The 50 % fib re-tracement level taken from the Nov low and the Dec high creates a confluence with the .618 fib level taken from the most recent move up (feb low to feb High)

Half of a normal buy position will be entered once price action retraces to around 138.317, the other half will be put on once price reaches the ascending trend line, with a break of the TL triggering the stop order.