At market close Wednesday, the SPDR S&P 500 ETF Trust (SPY) was up 0.80%. See more: “Night Session May See Greater Returns From CPI Release” During the first half of 2023, large-cap stocks (measured by SPY) reacted positively to CPI reports during five out of the six releases. While NightShares 500 ETF (NSPY) offers exposure to the night performance of the S&P 500, the NightShares 500 1x/1.5x ETF (NSPL) leverages the night while maintaining daytime exposure.