The Vanguard Group, Inc. is an American registered investment adviser founded on May 1, 1975, and based in Malvern, Pennsylvania, with about $10.4 trillion in global assets under management as of November 2024. From Wikipedia
The Vanguard S&P 500 ETF overtakes the SPDR S&P 500 Trust after massive inflows, marking a significant shift in the ETF industry.