Latest Period
Q1 2026
Security Snapshot
QUALYS, INC. - Common Stock (QLYS) Institutional Ownership
CUSIP: 74758T303
13F Institutional Holders and Ownership History from Q1 2014 to Q2 2026
Institutions Reporting
415
Shares (Excl. Options)
36,861,307
Price
$87.85
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- Security type / class
- Equity / Common Stock
- Symbol
- QLYS on Nasdaq
- All holders as of 31 Mar 2026
- Q1 2026
- Total 13F shares
- 36,861,307
- Total 13F value
- $3,237,508,250
- Portfolio coverage rank
- 0%
- Share change
- +916,928
- Value change
- +$14,958,149
- Number of holders
- 415
- Shares outstanding
- 35,743,769
- SEC-reported price per share
- $151.54
- Insider filing price
- $151.54
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
3 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- QLYS - QUALYS, INC. - Common Stock is tracked under CUSIP 74758T303.
- 415 institutions reported positions in Q1 2026.
- 3 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 415 to 120 between Q1 2026 and Q2 2026.
- SEC-reported value moved from $3,237,508,250 to $318,601,519.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 415 institutions filings for Q1 2026.
Security key
74758T303
Latest holder period
Q1 2026
13F holders
415
13D/G owners
3
CIK / CUSIP context first
Open Q1 2026 holders
QLYS full holder history
QUALYS, INC. SEC filings
QUALYS, INC. company facts
QUALYS, INC. insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 74758T303:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
3
Security
QLYS
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| BlackRock, Inc. | 14% | -12% | $645,205,538 | -$97,398,249 | 5,090,379 | -13% | BlackRock, Inc. | 31 Mar 2025 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 7.2% | $225,640,090 | 2,568,470 | Vanguard Portfolio Management | 31 Mar 2026 | |||
| VANGUARD CAPITAL MANAGEMENT LLC | 5.2% | $163,284,687 | 1,858,676 | Vanguard Capital Management | 31 Mar 2026 |
As of 31 Mar 2026, 415 institutional investors reported holding 36,861,307 shares of QUALYS, INC. - Common Stock (QLYS). This represents 103% of the company’s total 35,743,769 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
70%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| BlackRock, Inc. | 15% | 5,360,596 | -0.23% | 0.01% | $470,928,356 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 7.1% | 2,537,126 | 0% | 0.01% | $222,886,519 |
| VANGUARD CAPITAL MANAGEMENT LLC | 4.4% | 1,584,606 | 0% | 0% | $139,207,637 |
| STATE STREET CORP | 3.9% | 1,388,720 | +3% | 0% | $121,999,052 |
| GEODE CAPITAL MANAGEMENT, LLC | 3.7% | 1,320,909 | +5.2% | 0.01% | $116,055,920 |
| AQR CAPITAL MANAGEMENT LLC | 2.9% | 1,038,928 | +64% | 0.04% | $90,843,907 |
| Legal & General Group Plc | 2.9% | 1,029,587 | -11% | 0.02% | $90,449,218 |
| Boston Trust Walden Corp | 2.8% | 1,010,376 | -8.5% | 0.73% | $88,761,531 |
| FIRST TRUST ADVISORS LP | 2.8% | 996,064 | -27% | 0.06% | $87,504,222 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 2.3% | 832,796 | +127% | 0.04% | $73,161,129 |
| DIMENSIONAL FUND ADVISORS LP | 2.1% | 763,099 | +6.4% | 0.01% | $67,040,637 |
| JPMORGAN CHASE & CO | 2.1% | 760,842 | +56% | 0% | $66,893,229 |
| Penserra Capital Management LLC | 2% | 732,504 | +34% | 0.75% | $64,350,000 |
| MORGAN STANLEY | 1.8% | 646,426 | -6.6% | 0% | $56,788,676 |
| RWA WEALTH PARTNERS, LLC | 1.5% | 548,760 | -6.8% | 0.53% | $48,208,566 |
| NORTHERN TRUST CORP | 1.4% | 510,546 | -0.41% | 0.01% | $44,851,467 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 1.4% | 502,419 | +6.8% | 0.01% | $44,137,509 |
| RENAISSANCE TECHNOLOGIES LLC | 1.4% | 497,600 | +3.6% | 0.07% | $43,714,160 |
| NEUBERGER BERMAN GROUP LLC | 1.3% | 470,116 | -42% | 0.03% | $41,299,690 |
| CDAM (UK) Ltd | 1.3% | 469,001 | +21% | 9.1% | $41,201,738 |
| LONDON CO OF VIRGINIA | 1.3% | 466,342 | +20% | 0.25% | $40,969,044 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 1.2% | 438,572 | +3.7% | 0.05% | $38,528,791 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 1.2% | 416,587 | -3.3% | 0.01% | $36,597,169 |
| Invesco Ltd. | 1.1% | 380,820 | +1.2% | 0% | $33,455,037 |
| Clark Capital Management Group, Inc. | 1.1% | 380,459 | +4.6% | 0.21% | $33,423,323 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
50
Latest
Q1 2026
Rows shown
1-25 of 50
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q2 | 2,315,914 | $318,601,519 | +$3,653,231 | $137.49 | 120 |
| 2026 Q1 | 36,861,307 | $3,237,508,250 | +$14,958,149 | $87.85 | 415 |
| 2025 Q4 | 36,059,824 | $4,794,962,513 | +$85,978,015 | $132.90 | 447 |
| 2025 Q3 | 35,395,618 | $4,686,653,183 | +$31,809,278 | $132.33 | 427 |
| 2025 Q2 | 35,060,421 | $5,009,847,235 | +$31,496,597 | $142.87 | 434 |
| 2025 Q1 | 34,877,527 | $4,392,610,864 | -$153,771,660 | $125.93 | 426 |
| 2024 Q4 | 35,923,708 | $5,038,073,250 | -$69,022,429 | $140.22 | 446 |
| 2024 Q3 | 36,291,989 | $4,662,354,017 | -$137,507,803 | $128.46 | 430 |
| 2024 Q2 | 36,892,891 | $5,261,299,695 | +$23,634,556 | $142.60 | 463 |
| 2024 Q1 | 36,553,396 | $6,099,074,845 | -$53,320,314 | $166.87 | 450 |
| 2023 Q4 | 36,645,215 | $7,192,338,851 | +$161,334,962 | $196.28 | 461 |
| 2023 Q3 | 35,875,240 | $5,473,810,537 | +$72,482,649 | $152.55 | 406 |
| 2023 Q2 | 35,435,898 | $4,578,512,528 | +$48,445,431 | $129.17 | 385 |
| 2023 Q1 | 35,084,484 | $4,560,890,965 | -$16,325,824 | $130.02 | 386 |
| 2022 Q4 | 35,723,133 | $4,009,230,075 | +$45,193,732 | $112.23 | 388 |
| 2022 Q3 | 35,739,539 | $4,982,448,661 | +$96,677,699 | $139.39 | 386 |
| 2022 Q2 | 34,916,478 | $4,405,039,990 | +$42,919,789 | $126.14 | 355 |
| 2022 Q1 | 34,608,246 | $4,928,738,616 | -$109,560,247 | $142.41 | 351 |
| 2021 Q4 | 35,326,508 | $4,846,018,961 | +$115,749,103 | $137.22 | 351 |
| 2021 Q3 | 34,354,671 | $3,821,207,360 | +$19,778,100 | $111.29 | 330 |
| 2021 Q2 | 34,154,155 | $3,438,989,691 | -$243,450,861 | $100.69 | 321 |
| 2021 Q1 | 36,489,522 | $3,821,823,048 | -$25,158,182 | $104.78 | 309 |
| 2020 Q4 | 36,579,802 | $4,456,274,505 | +$14,840,294 | $121.87 | 342 |
| 2020 Q3 | 36,223,803 | $3,551,177,651 | -$7,475,122 | $98.01 | 321 |
| 2020 Q2 | 36,165,680 | $3,759,482,249 | +$43,399,885 | $104.02 | 353 |