PROSHARES ULTRA S&P500 (SSO) Institutional Ownership and Insiders Activity

PROSHARES ULTRA S&P500 (SSO) is widely held by institutional investors, with 1 tracked firm reporting positions valued at approximately $3.49M based on SEC Form 13F filings for the quarter ended June 30, 2026.

Renaissance Technologies LLC is the largest disclosed holder, reporting approximately $3.49M in SSO holdings in its latest filing.

Institutional ownership among tracked investors remains highly concentrated, with Renaissance Technologies LLC representing the majority of disclosed value.