The SPDR Portfolio S&P 500 ETF (SPLG) closed at $4,068.5 on October 17, 2026, marking a 0.39% gain over the prior 24-hour period. The move added to a positive stretch for the fund, which has advanced 2.53% over the past seven days.
Over the 30-day window, the ETF recorded a change of 4,581.28%, an extraordinary figure in the data that stands in sharp contrast to the more measured daily and weekly movements.
Market capitalization data for the fund was not available as of the time of publication. SPLG tracks the S&P 500 index and is widely used as a broad measure of large-cap U.S. equity performance.



