Aug 7, 2025
Breaking Down S&P 500 Ownership

Key takeaways
- Investment Advisors (aka asset managers) own the largest share of the S&P 500, at 38%. They manage portfolios for clients and offer direct, customized advice.
- Retail investors are the next biggest group, followed closely by mutual funds (which can also be owned by retail investors)
Apes together strong
Retail investors are a growing force in the stock market due to increasing access (e.g. trading platforms) and awareness (e.g. GameStop short squeeze of 2021).
According to data from JP Morgan, retail investors account for roughly 36% of order flow in the U.S. stock market, up from less than 10% prior to the pandemic.