QUALYS INC QLYS
COM · Common Stock · CUSIP 74758T303 · ISIN US74758T3032
American web security company
- SectorTechnology
- IndustryServices-Prepackaged Software
- HeadquartersFoster City, CA
- Founded1999
- Websitequalys.com
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($19.8m this quarter). Holder counts are more reliable. Shares outstanding: 34.6m as of 2026-07-22, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $137.20. Options: 12 managers hold calls ($77.8m notional), 8 hold puts ($26.9m).
Trends to Q2 2026
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 394 |
| Q4 2022 | 392 |
| Q1 2023 | 390 |
| Q2 2023 | 386 |
| Q3 2023 | 409 |
| Q4 2023 | 464 |
| Q1 2024 | 453 |
| Q2 2024 | 467 |
| Q3 2024 | 436 |
| Q4 2024 | 451 |
| Q1 2025 | 430 |
| Q2 2025 | 438 |
| Q3 2025 | 431 |
| Q4 2025 | 449 |
| Q1 2026 | 423 |
| Q2 2026 | 431 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q3 2024 | 186 | 248 |
| Q4 2024 | 219 | 201 |
| Q1 2025 | 199 | 229 |
| Q2 2025 | 230 | 195 |
| Q3 2025 | 212 | 202 |
| Q4 2025 | 220 | 202 |
| Q1 2026 | 246 | 201 |
| Q2 2026 | 242 | 215 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2025 | $20.9m | $2.3m | 0.11 |
| Q4 2025 | $15.3m | $6.4m | 0.42 |
| Q1 2026 | $27.7m | $14.9m | 0.54 |
| Q2 2026 | $77.8m | $26.9m | 0.35 |
Biggest buyers
| MILLENNIUM MANAGEMENT LLC | Added | +527.3k |
| Legal & General Group Plc | Added | +407.8k |
| BlackRock, Inc. | Added | +402.1k |
| ACADIAN ASSET MANAGEMENT LLC | Added | +360.2k |
| AQR CAPITAL MANAGEMENT LLC | Added | +355.8k |
| Portolan Capital Management, LLC | Added | +290.8k |
| Point72 Asset Management, L.P. | New | +285.9k |
| VOYA INVESTMENT MANAGEMENT LLC | Added | +224.1k |
| CITADEL ADVISORS LLC | Added | +174.6k |
| Clark Capital Management Group, Inc. | Added | +163.2k |
Biggest sellers
| JPMORGAN CHASE & CO | Reduced | -469.2k |
| NEUBERGER BERMAN GROUP LLC | Reduced | -466.0k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | Reduced | -341.0k |
| Alyeska Investment Group, L.P. | Reduced | -271.1k |
| CDAM (UK) Ltd | Reduced | -249.1k |
| Fundsmith LLP | Sold out | -226.1k |
| TUDOR INVESTMENT CORP ET AL | Reduced | -225.8k |
| RENAISSANCE TECHNOLOGIES LLC | Reduced | -213.5k |
| Trexquant Investment LP | Reduced | -149.2k |
| MARSHALL WACE, LLP | Reduced | -141.2k |
Biggest calls
| PEAK6 LLC | New | $22.7m165.0k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $18.6m135.4k shares |
| TUDOR INVESTMENT CORP ET AL | Added | $12.0m87.6k shares |
| IMC-Chicago, LLC | Added | $7.3m52.8k shares |
| CITADEL ADVISORS LLC | Added | $7.0m51.2k shares |
| JANE STREET GROUP, LLC | Added | $5.1m37.3k shares |
| Walleye Trading LLC | Added | $2.6m19.0k shares |
| GROUP ONE TRADING LLC | Reduced | $1.3m9.1k shares |
| Walleye Capital LLC | Added | $577.5k4.2k shares |
| SIMPLEX TRADING, LLC | Added | $398.7k2.9k shares |
Biggest puts
| JANE STREET GROUP, LLC | Added | $12.0m87.6k shares |
| CITADEL ADVISORS LLC | Added | $5.3m38.4k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $5.1m37.1k shares |
| SIG BROKERAGE, LP | Unchanged | $2.1m15.0k shares |
| IMC-Chicago, LLC | Added | $1.8m13.1k shares |
| Walleye Capital LLC | Added | $481.2k3.5k shares |
| Walleye Trading LLC | Reduced | $41.2k300 shares |
| SIMPLEX TRADING, LLC | Added | $41.2k300 shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| BlackRock, Inc. 13G · institution -2.0 pts · filed 2025-04-29 | 14.0% |
| VANGUARD PORTFOLIO MANAGEMENT LLC 13G · institution new · filed 2026-04-29 | 7.2% |
| VANGUARD CAPITAL MANAGEMENT LLC 13G · institution new · filed 2026-04-30 | 5.2% |
Fell to 5% or below in the last year: VANGUARD GROUP INC (0.0%, 2026-03-27; now reported by VANGUARD PORTFOLIO MANAGEMENT LLC)
Insider purchases and sales since 1 Apr 2026
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q4 2024 | 0 | — | 4 | $6.9m | $6.9m |
| Q1 2025 | 0 | — | 3 | $4.7m | $4.7m |
| Q2 2025 | 0 | — | 6 | $5.4m | $5.4m |
| Q3 2025 | 0 | — | 7 | $7.2m | $5.9m |
| Q4 2025 | 0 | — | 3 | $8.3m | $8.3m |
| Q1 2026 | 0 | — | 3 | $2.8m | $2.8m |
| Q2 2026 | 0 | — | 6 | $9.4m | $9.3m |
| Q3 2026 | 0 | — | 5 | $3.1m | $3.1m |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2026-09-21 | POSEY BRUCE K CHIEF LEGAL OFFICER | Sold plan | $155.4k866 shares |
| 2026-09-14 | Thakar Sumedh S CEO & PRESIDENT, director | Sold plan | $544.1k3.2k shares |
| 2026-09-02 | Kim Joo Mi CHIEF FINANCIAL OFFICER | Sold plan | $174.7k1.0k shares |
| 2026-09-02 | Berquist Thomas Director | Sold plan | $89.6k511 shares |
| 2026-08-20 | POSEY BRUCE K CHIEF LEGAL OFFICER | Sold plan | $159.5k866 shares |
| 2026-08-20 | Pfeiffer Wendy Director | Sold plan | $92.5k500 shares |
| 2026-08-14 | Thakar Sumedh S CEO & PRESIDENT, director | Sold plan | $604.7k3.2k shares |
| 2026-08-03 | Kim Joo Mi CHIEF FINANCIAL OFFICER | Sold plan | $249.0k1.6k shares |
| 2026-07-20 | POSEY BRUCE K CHIEF LEGAL OFFICER | Sold plan | $139.5k882 shares |
| 2026-07-20 | Pfeiffer Wendy Director | Sold plan | $79.1k500 shares |
| 2026-07-14 | Thakar Sumedh S CEO & PRESIDENT, director | Sold plan | $513.6k3.2k shares |
| 2026-07-06 | POSEY BRUCE K CHIEF LEGAL OFFICER | Sold plan | $155.0k1.0k shares |
| 2026-07-02 | Kim Joo Mi CHIEF FINANCIAL OFFICER | Sold plan | $138.4k965 shares |
| 2026-06-30 | Thakar Sumedh S CEO & PRESIDENT, director | Sold plan | $4.0m30.0k shares |
| 2026-06-29 | Thakar Sumedh S CEO & PRESIDENT, director | Sold plan | $1.3m10.0k shares |
| 2026-06-26 | Thakar Sumedh S CEO & PRESIDENT, director | Sold plan | $1.2m10.0k shares |
| 2026-06-22 | POSEY BRUCE K CHIEF LEGAL OFFICER | Sold plan | $94.7k865 shares |
| 2026-06-22 | Pfeiffer Wendy Director | Sold plan | $55.3k500 shares |
| 2026-06-15 | Thakar Sumedh S CEO & PRESIDENT, director | Sold plan | $367.4k3.2k shares |
| 2026-06-12 | Berquist Thomas Director | Sold plan | $104.0k939 shares |
| 2026-06-12 | Hank Jeffrey P Director | Sold | $52.1k470 shares |
| 2026-06-11 | Hank Jeffrey P Director | Sold | $51.2k470 shares |
| 2026-06-02 | Kim Joo Mi CHIEF FINANCIAL OFFICER | Sold plan | $115.1k1.0k shares |
| 2026-06-01 | Thakar Sumedh S CEO & PRESIDENT, director | Sold plan | $1.5m13.2k shares |
| 2026-05-22 | Pfeiffer Wendy Director | Sold plan | $50.6k500 shares |
| 2026-05-20 | POSEY BRUCE K CHIEF LEGAL OFFICER | Sold plan | $86.9k865 shares |
| 2026-05-19 | POSEY BRUCE K CHIEF LEGAL OFFICER | Sold plan | $238.8k2.4k shares |
| 2026-05-19 | Kim Joo Mi CHIEF FINANCIAL OFFICER | Sold plan | $163.0k1.6k shares |
Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).
Holders, Q2 2026
| Manager | Shares | Change |
|---|---|---|
| BlackRock, Inc. 0.01% of their portfolio | 5.8m $792.3m | Added +402.1k |
| VANGUARD PORTFOLIO MANAGEMENT LLC 0.02% of their portfolio | 2.7m $370.7m | Added +158.8k |
| VANGUARD CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 1.6m $218.7m | Added +5.7k |
| STATE STREET CORP 0.01% of their portfolio | 1.5m $200.2m | Added +67.4k |
| Legal & General Group Plc 0.04% of their portfolio | 1.4m $197.6m | Added +407.8k |
| GEODE CAPITAL MANAGEMENT, LLC 0.01% of their portfolio | 1.4m $193.8m | Added +88.7k |
| AQR CAPITAL MANAGEMENT LLC 0.07% of their portfolio | 1.4m $190.6m | Added +355.8k |
| FIRST TRUST ADVISORS LP 0.09% of their portfolio | 1.1m $155.5m | Added +134.6k |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.06% of their portfolio | 985.3k $135.5m | Added +152.5k |
| Boston Trust Walden Corp 1.03% of their portfolio | 984.9k $135.4m | Reduced -25.5k |
| Penserra Capital Management LLC 0.82% of their portfolio | 780.1k $107.3m | Added +47.6k |
| MILLENNIUM MANAGEMENT LLC 0.07% of their portfolio | 762.7k $104.9m | Added +527.3k |
| DIMENSIONAL FUND ADVISORS LP 0.02% of their portfolio | 719.2k $98.9m | Reduced -43.9k |
| MORGAN STANLEY 0.00% of their portfolio | 620.7k $85.3m | Reduced -25.7k |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.09% of their portfolio | 553.7k $76.1m | Added +115.2k |
| RWA WEALTH PARTNERS, LLC 0.72% of their portfolio | 548.8k $75.4m | Reduced -4 |
| Clark Capital Management Group, Inc. 0.41% of their portfolio | 543.7k $74.8m | Added +163.2k |
| ACADIAN ASSET MANAGEMENT LLC 0.09% of their portfolio | 542.3k $74.5m | Added +360.2k |
| Portolan Capital Management, LLC 2.73% of their portfolio | 529.8k $72.8m | Added +290.8k |
| VOYA INVESTMENT MANAGEMENT LLC 0.06% of their portfolio | 521.5k $71.7m | Added +224.1k |
| NORTHERN TRUST CORP 0.01% of their portfolio | 517.1k $71.1m | Added +6.6k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.01% of their portfolio | 514.7k $70.8m | Added +12.3k |
| LONDON CO OF VIRGINIA 0.34% of their portfolio | 428.3k $58.9m | Reduced -38.0k |
| Invesco Ltd. 0.00% of their portfolio | 423.1k $58.2m | Added +42.2k |
| GOLDMAN SACHS GROUP INC 0.01% of their portfolio | 397.0k $54.6m | Added +72.8k |
| CITADEL ADVISORS LLC 0.03% of their portfolio | 378.1k $52.0m | Added +174.6k |
| FORT WASHINGTON INVESTMENT ADVISORS INC /OH/ 0.25% of their portfolio | 368.9k $50.7m | Added +125.0k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 291.7k $37.6m | Reduced -469.2k |
| Point72 Asset Management, L.P. 0.06% of their portfolio | 285.9k $39.3m | New |
| RENAISSANCE TECHNOLOGIES LLC 0.05% of their portfolio | 284.1k $39.1m | Reduced -213.5k |
| Bank of New York Mellon Corp 0.01% of their portfolio | 284.0k $39.0m | Reduced -34.3k |
| VANGUARD FIDUCIARY TRUST CO 0.01% of their portfolio | 253.6k $34.9m | Added +3.3k |
| UBS Group AG 0.01% of their portfolio | 244.2k $33.6m | Added +50.0k |
| CDAM (UK) Ltd 7.80% of their portfolio | 219.9k $30.2m | Reduced -249.1k |
| ENVESTNET ASSET MANAGEMENT INC 0.01% of their portfolio | 213.2k $29.3m | Added +5.5k |
| Retirement Systems of Alabama 0.07% of their portfolio | 174.1k $23.9m | Reduced -7.5k |
| CANADA LIFE ASSURANCE Co 0.04% of their portfolio | 173.8k $23.9m | Reduced -14.9k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 158.9k $21.9m | Reduced -47.7k |
| PRINCIPAL FINANCIAL GROUP INC 0.01% of their portfolio | 148.3k $20.4m | Added +8.0k |
| WELLINGTON MANAGEMENT GROUP LLP 0.00% of their portfolio | 141.4k $19.4m | New |
| BNP PARIBAS FINANCIAL MARKETS 0.01% of their portfolio | 137.4k $18.9m | Reduced -71.2k |
| Jupiter Topco LLC 0.01% of their portfolio | 134.9k $18.5m | First filing |
| SYSTEMATIC FINANCIAL MANAGEMENT LP 0.35% of their portfolio | 126.8k $17.4m | Added +12.8k |
| Russell Investments Group, Ltd. 0.01% of their portfolio | 124.8k $16.4m | Added +76.9k |
| Fisher Asset Management, LLC 0.00% of their portfolio | 114.9k $15.8m | Reduced -1.3k |
| Nuveen, LLC 0.00% of their portfolio | 112.5k $15.5m | Added +17.5k |
| Tributary Capital Management, LLC 1.27% of their portfolio | 112.3k $15.4m | Added +9.1k |
| Vontobel Holding Ltd. 0.05% of their portfolio | 107.5k $14.8m | Added +32.3k |
| RHUMBLINE ADVISERS 0.01% of their portfolio | 107.0k $14.7m | Added +3.1k |
| CULLINAN ASSOCIATES INC 1.07% of their portfolio | 102.8k $14.1m | Unchanged |
| Pacer Advisors, Inc. 0.04% of their portfolio | 100.8k $13.9m | Reduced -28.9k |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 100.6k $8.8m | Added +4.0k |
| Vident Advisory, LLC 0.10% of their portfolio | 98.9k $13.6m | Added +1.7k |
| DEUTSCHE BANK AG\ 0.00% of their portfolio | 92.1k $12.7m | Reduced -9.2k |
| WINMILL & CO. INC 2.70% of their portfolio | 88.6k $12.2m | Unchanged |
| SCHRODER INVESTMENT MANAGEMENT GROUP 0.01% of their portfolio | 84.9k $10.9m | New |
| CITIGROUP INC 0.01% of their portfolio | 83.5k $11.5m | Added +2.0k |
| Creative Planning 0.01% of their portfolio | 82.8k $11.4m | Added +53.8k |
| California Public Employees Retirement System 0.01% of their portfolio | 82.0k $11.3m | Added +6.1k |
| FEDERATED HERMES, INC. 0.02% of their portfolio | 79.1k $10.9m | Reduced -101.2k |
| BI Asset Management Fondsmaeglerselskab A/S 0.09% of their portfolio | 79.0k $10.9m | Added +16.0k |
| Jump Financial, LLC 0.09% of their portfolio | 76.9k $10.6m | Added +68.6k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio | 75.6k $10.4m | Reduced -341.0k |
| Gotham Asset Management, LLC 0.02% of their portfolio | 75.5k $10.4m | Reduced -35.1k |
| Swiss National Bank 0.01% of their portfolio | 71.6k $9.8m | Added +400 |
| VICTORY CAPITAL MANAGEMENT INC 0.01% of their portfolio | 71.4k $9.8m | Added +5.0k |
| Freestone Grove Partners LP 0.06% of their portfolio | 68.8k $9.5m | Added +60.3k |
| AMERICAN CENTURY COMPANIES INC 0.00% of their portfolio | 67.5k $9.3m | Reduced -1.2k |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 65.9k $9.1m | Added +17.1k |
| NORDEA INVESTMENT MANAGEMENT AB 0.01% of their portfolio | 62.2k $8.7m | Reduced -105.8k |
| Quantinno Capital Management LP 0.01% of their portfolio | 60.0k $8.3m | Added +23.8k |
| Willis Investment Counsel 0.37% of their portfolio | 57.2k $7.9m | Added +22.7k |
| LPL Financial LLC 0.00% of their portfolio | 56.3k $7.7m | Added +2.2k |
| NORGES BANK 0.00% of their portfolio | 53.3k $7.3m | Not comparable |
| Robeco Institutional Asset Management B.V. 0.01% of their portfolio | 50.8k $7.0m | Reduced -25.8k |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. 0.01% of their portfolio | 50.3k $6.9m | Added +56 |
| LGT Fund Management Co Ltd. 0.28% of their portfolio | 48.1k $6.6m | Added +24.6k |
| RAYMOND JAMES FINANCIAL INC 0.00% of their portfolio | 47.9k $6.6m | Added +11.1k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 47.7k $6.6m | Reduced -66.0k |
| HERALD INVESTMENT MANAGEMENT Ltd 0.88% of their portfolio | 47.5k $6.5m | Reduced -7.5k |
| IQ EQ FUND MANAGEMENT (IRELAND) Ltd 0.42% of their portfolio | 47.5k $6.5m | Added +12.3k |
| NICHOLAS COMPANY, INC. 0.12% of their portfolio | 47.3k $6.5m | Unchanged |
| Corient Private Wealth LP 0.01% of their portfolio | 45.5k $6.3m | Added +20.2k |
| SEI INVESTMENTS CO 0.01% of their portfolio | 44.0k $6.1m | Reduced -3.3k |
| FRANKLIN RESOURCES INC 0.00% of their portfolio | 43.3k $5.9m | Added +9.5k |
| Park State Asset Management 5.80% of their portfolio | 43.2k $5.9m | Reduced -14.9k |
| AMERIPRISE FINANCIAL INC 0.00% of their portfolio | 43.1k $5.9m | Reduced -140.8k |
| Taylor Hoffman Capital Management LLC 1.41% of their portfolio | 42.2k $5.8m | Added +5.0k |
| Universal- Beteiligungs- und Servicegesellschaft mbH 0.01% of their portfolio | 41.6k $5.7m | Added +10.1k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.01% of their portfolio | 41.1k $5.7m | Reduced -1.2k |
| THIRD AVENUE MANAGEMENT LLC 0.86% of their portfolio | 39.1k $5.4m | Unchanged |
| HighTower Advisors, LLC 0.01% of their portfolio | 38.4k $5.3m | Added +6.8k |
| MetLife Investment Management, LLC 0.02% of their portfolio | 37.6k $5.2m | Added +699 |
| Cresset Asset Management, LLC 0.02% of their portfolio | 36.4k $5.0m | Added +33.0k |
| Caisse de depot et placement du Quebec 0.01% of their portfolio | 36.3k $5.0m | Added +7.4k |
| VANGUARD ASSET MANAGEMENT, Ltd 0.00% of their portfolio | 35.9k $4.9m | Added +3.9k |
| Holocene Advisors, LP 0.01% of their portfolio | 35.0k $4.8m | New |
| Alyeska Investment Group, L.P. 0.01% of their portfolio | 33.6k $4.6m | Reduced -271.1k |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.00% of their portfolio | 33.4k $4.6m | Reduced -581 |
| SEGALL BRYANT & HAMILL, LLC 0.05% of their portfolio | 32.9k $4.5m | Reduced -1.9k |