QUALYS INC (QLYS) Institutional Ownership and Insiders Activity

QUALYS INC (QLYS) is widely held by institutional investors, with 6 tracked firms reporting positions valued at approximately $73.96M based on SEC Form 13F filings for the quarter ended March 31, 2026.

Renaissance Technologies LLC is the largest disclosed holder, reporting approximately $43.71M in QLYS holdings in its latest filing.

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