The power of the night effect was demonstrated in large-cap stocks on Tuesday. At market close, there was a 150 basis point spread between the prior night and day performance of the SPDR S&P 500 ETF Trust (SPY). SPY declined 0.01% during the prior night session, followed by a 1.51% drop during the day trading session [...] The post Night Effect Demonstrated in Large-Cap Stocks Yesterday appeared first on ETF Trends .