A huge gap-up open for NQ on Wednesday to force the shorts to cover and then another huge buy programs was triggered after the FOMC announced their policy decision which might have caused more shorts to cover.
Will there be more buying after such a large engineered rally, only time will tell. On the intraday price level, key inflection price level for NQ for Thursday trading would be around 12,470, bullish above it, bearish below it.