It is notable that Wednesday was the 2nd day in a row with an unfilled up gap.
The study below appeared in the Quantifinder last night, and has been updated with current stats. It examined other times SPY (NYSEARCA:SPY) left 2 unfilled up gaps and closed at a 50-day high.
The size of the follow-through isn’t terribly large, but it has been quite consistent that some follow through was achieved in the next few days. This suggests the current momentum may be followed by further short-term gains.