$QQQ holding 705 support after recent run, but seeing some exhaustion

Watching $QQQ pretty closely here after that push. It's done well to hold the 705 level on the dip today, which is encouraging for continued upside momentum. However, the action around 724.08 today and that failed push past 724.57 suggests some near-term exhaustion. I'm not calling for a full reversal, but if we get a sustained break below 705, that would invalidate the current bullish structure for me, at least for a while. Could easily see a retest of 690 if that support fails. Just an observation.