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# Who owns QUALYS, INC. (QLYS)? Elite investor 13F holders

5 tracked elite investors reported holding QUALYS, INC as of 2026-06-30, including Renaissance Technologies LLC, Tudor Investment, D.E. Shaw, Gotham Asset Management, Third Avenue Management. Who bought, trimmed or exited each quarter, with links to the original SEC 13F filings.

5 tracked investors currently reported holding · Latest report period: 2026-06-30 · Information Technology · Software & Services

Qualys, Inc. provides cloud-based platform delivering information technology (IT), security, and compliance solutions in the United States and internationally. The company provides Qualys Cloud Apps, which include cybersecurity asset management; enterprise TruRisk management; vulnerability management, detection, and response; total application security; patch management; custom assessment and…

## Reported holders and securities, including exits (up to 20)

| Investor | Security | Instrument | Report period | Filed | Value | Quantity | Units | Change | Source |
|  --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| [Renaissance Technologies LLC](https://ownershiptrace.com/13f/investors/63) | QUALYS INC | SHARE | 2026-06-30 | 2026-08-13 00:00:00 | 39060909.00 USD | 284100.000000 | Shares | reduce | [Original filing](https://www.sec.gov/Archives/edgar/data/1037389/0001037389-26-000059-index.html) |
| [Tudor Investment](https://ownershiptrace.com/13f/investors/94675) | QUALYS INC | SHARE | 2026-06-30 | 2026-08-14 00:00:00 | 3454436.00 USD | 25125.000000 | Shares | reduce | [Original filing](https://www.sec.gov/Archives/edgar/data/923093/0000902664-26-003485-index.html) |
| [D.E. Shaw](https://ownershiptrace.com/13f/investors/98) | QUALYS INC | SHARE | 2026-06-30 | 2026-08-14 00:00:00 | 2740313.00 USD | 19931.000000 | Shares | reduce | [Original filing](https://www.sec.gov/Archives/edgar/data/1009207/0001104659-26-097217-index.html) |
| [Gotham Asset Management](https://ownershiptrace.com/13f/investors/94672) | QUALYS INC | SHARE | 2026-06-30 | 2026-08-14 00:00:00 | 10382420.00 USD | 75514.000000 | Shares | reduce | [Original filing](https://www.sec.gov/Archives/edgar/data/1510387/0001398344-26-014644-index.html) |
| [Third Avenue Management](https://ownershiptrace.com/13f/investors/73) | QUALYS INC | SHARE | 2026-06-30 | 2026-08-12 00:00:00 | 5378609.00 USD | 39120.000000 | Shares | hold | [Original filing](https://www.sec.gov/Archives/edgar/data/1099281/0001099281-26-000008-index.html) |
| [Torray Funds](https://ownershiptrace.com/13f/investors/76) | QUALYS INC | SHARE | 2026-06-30 | 2026-07-30 00:00:00 | 0.00 USD | 0.000000 | Shares | exited | [Original filing](https://www.sec.gov/Archives/edgar/data/98758/0001193125-26-326274-index.html) |
| [Bridgewater Associates](https://ownershiptrace.com/13f/investors/8) | QUALYS INC | SHARE | 2026-06-30 | 2026-08-14 00:00:00 | 0.00 USD | 0.000000 | Shares | exited | [Original filing](https://www.sec.gov/Archives/edgar/data/1350694/0001350694-26-000003-index.html) |

Public disclosures can be delayed, incomplete, or amended. Report period describes a position date; transaction date describes a reported transaction; filed describes submission. A recent filing or page update does not establish a current holding. A dash means unavailable or not comparable, not zero.

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