Ticker · CUSIP 74758T303
Holders (tracked)
13
Combined shares
2,441,647
Combined value
$300.66M
Last close
$84.09
Quarter
2025Q4
Tracked holders · last 8 quarters
+2 vs previous quarter over the last 8.
Price is -31.7% vs the avg quarter-end implied price across tracked holders.
SEC event timeline
23 events
- +217,475 shares · 2025Q413F
- AQR Capital Management trimmed2026-02-17−377,298 shares · 2025Q413F
- Ken Griffin (Citadel Advisors) trimmed2026-02-17−29,118 shares · 2025Q413F
- Izzy Englander (Millennium Mgmt) added2026-02-17+117,666 shares · 2025Q413F
- D.E. Shaw & Co. added2026-02-17+50,037 shares · 2025Q413F
- T. Rowe Price added2026-02-17+1,782 shares · 2025Q413F
- Two Sigma Investments added2026-02-17+67,365 shares · 2025Q413F
- Ray Dalio (Bridgewater Associates) added2026-02-13+8,686 shares · 2025Q413F
- Renaissance Technologies added2026-02-12+24,600 shares · 2025Q413F
- Norges Bank (Norway SWF) opened position2026-02-10+219,395 shares · 2025Q413F
- Ken Fisher (Fisher Asset Mgmt) trimmed2026-02-09−12,909 shares · 2025Q413F
- −123,182 shares · 2025Q313F
- AQR Capital Management trimmed2025-11-14−1,331 shares · 2025Q313F
- Izzy Englander (Millennium Mgmt) trimmed2025-11-14−62,670 shares · 2025Q313F
- Steve Cohen (Point72) exited2025-11-14−138,300 shares · 2025Q313F
- Two Sigma Investments trimmed2025-11-14−8,756 shares · 2025Q313F
- D.E. Shaw & Co. trimmed2025-11-14−6,241 shares · 2025Q313F
- T. Rowe Price added2025-11-14+1,953 shares · 2025Q313F
- Ray Dalio (Bridgewater Associates) added2025-11-13+12,414 shares · 2025Q313F
- Renaissance Technologies added2025-11-13+95,300 shares · 2025Q313F
- Norges Bank (Norway SWF) exited2025-11-13−45,361 shares · 2025Q313F
- Ken Fisher (Fisher Asset Mgmt) trimmed2025-11-12−12,350 shares · 2025Q313F
- Norges Bank (Norway SWF) added2025-11-12+23,989 shares · 2024Q313F
Insider activity
No insider transactions in the last 30 days.
Follow-the-investor returns
If you'd copied each holder of QLYS…
Cost basis inferred from 13F share-delta history. Sorted by % return on the position they're still holding.
| Investor | First in | Cost basis | Return | Position value today |
|---|---|---|---|---|
| Renaissance Technologies | 2016Q1 | $63.03 | +33.4% | $40.4M |
| T. Rowe Price | 2017Q2 | $67.27 | +25.0% | $15.1M |
| D.E. Shaw & Co. | 2018Q1 | $127.63 | -34.1% | $5.4M |
| Ken Griffin (Citadel Advisors) | 2016Q1 | $133.01 | -36.8% | $303K |
| Ken Griffin (Citadel Advisors) | 2016Q1 | $133.01 | -36.8% | $303K |
| Ken Griffin (Citadel Advisors) | 2016Q1 | $133.01 | -36.8% | $303K |
| Two Sigma Investments | 2016Q1 | $134.09 | -37.3% | $17.4M |
| Paul Tudor Jones (Tudor Investment) | 2016Q4 | $135.43 | -37.9% | $18.3M |
| Ray Dalio (Bridgewater Associates) | 2023Q2 | $135.72 | -38.0% | $2.0M |
| AQR Capital Management | 2016Q1 | $135.95 | -38.1% | $53.3M |
| Izzy Englander (Millennium Mgmt) | 2016Q1 | $138.13 | -39.1% | $20.6M |
| Ken Fisher (Fisher Asset Mgmt) | 2022Q2 | $149.72 | -43.8% | $10.0M |
| Norges Bank (Norway SWF) | 2016Q1 | $232.79 | -63.9% | $18.4M |
Who moved on this name in 2025Q4
13F transactions reported for the latest quarter, grouped by direction.
New positions2
- Norges Bank (Norway SWF)+219,395$29.2M
- Paul Tudor Jones (Tudor Investment)+217,475$28.9M
Added to6
- Izzy Englander (Millennium Mgmt)+117,666$15.6M
- Two Sigma Investments+67,365$9.0M
- D.E. Shaw & Co.+50,037$6.6M
- Renaissance Technologies+24,600$3.3M
- Ray Dalio (Bridgewater Associates)+8,686$1.2M
- T. Rowe Price+1,782$237
Trimmed3
- AQR Capital Management−377,298$50.1M
- Ken Griffin (Citadel Advisors)−29,118$3.9M
- Ken Fisher (Fisher Asset Mgmt)−12,909$1.7M
Exited0
—
Institutional ownership over time
Distinct super-investors holding this ticker · combined dollar value, by quarter.
| Quarter | Holders | Combined value |
|---|---|---|
| 2022Q1 | 15 | $37.52B |
| 2022Q2 | 16 | $24.93B |
| 2022Q3 | 15 | $8.7M |
| 2022Q4 | 16 | $607.0M |
| 2023Q1 | 15 | $717.4M |
| 2023Q2 | 15 | $752.6M |
| 2023Q3 | 16 | $931.1M |
| 2023Q4 | 15 | $1.19B |
| 2024Q1 | 14 | $1.03B |
| 2024Q2 | 14 | $1.02B |
| 2024Q3 | 13 | $232.1M |
| 2024Q4 | 14 | $184.1M |
| 2025Q1 | 12 | $212.5M |
| 2025Q2 | 13 | $314.0M |
| 2025Q3 | 11 | $261.9M |
| 2025Q4 | 13 | $300.7M |
Congress members trading this stock
| Date | Member | Type | Amount range | Filing |
|---|---|---|---|---|
| 2025-10-31 | Lisa McClain | Sell | $1K – $15K | PDF ↗ |
| 2025-10-30 | Lisa McClain | Buy | $1K – $15K | PDF ↗ |
| 2025-10-30 | Lisa McClain | Sell | $1K – $15K | PDF ↗ |
| 2025-09-11 | Lisa McClain | Buy | $1K – $15K | PDF ↗ |
Who owns QLYS
13 super-investors · 2025Q4
Tracked stake
2.44M
shares
Combined value
$301M
% of shares outstanding
—
shares-out unknown
Quarter action mix
New2Added6Trim5
| # | Manager | Shares | Value |
|---|---|---|---|
| 1 | AQR Capital Management | 633.5K | $84M |
| 2 | Renaissance Technologies | 480.3K | $64M |
| 3 | Izzy Englander Millennium Mgmt | 245.3K | $33M |
| 4 | Norges Bank Norway SWF | 219.4K | $29M |
| 5 | Paul Tudor Jones Tudor Investment | 217.5K | $29M |
| 6 | Two Sigma Investments | 206.4K | $27M |
| 7 | Ken Fisher Fisher Asset Mgmt | 118.7K | $16M |
| 8 | D.E. Shaw & Co. | 64.2K | $9M |
| 9 | Ken Griffin Citadel Advisors | 43.2K | $6M |
| 10 | Ray Dalio Bridgewater Associates | 23.6K | $3M |
| 11 | Ken Griffin Citadel Advisors | 6.4K | $851K |
| 12 | Ken Griffin Citadel Advisors | 3.6K | $478K |
| 13 | T. Rowe Price | 179.6K | $24K |
Recent moves
20 transactions
- +217,475 · 2025Q4
- +67,365 · 2025Q4
- −29,118 · 2025Q4
- −377,298 · 2025Q4
- +1,782 · 2025Q4
- +117,666 · 2025Q4
- +50,037 · 2025Q4
- +8,686 · 2025Q4
- +24,600 · 2025Q4
- +219,395 · 2025Q4
- −12,909 · 2025Q4
- −123,182 · 2025Q3
- −138,300 · 2025Q3
- TRIMD.E. Shaw & Co.−6,241 · 2025Q3
- −62,670 · 2025Q3
- −8,756 · 2025Q3
- +1,953 · 2025Q3
- −1,331 · 2025Q3
- +12,414 · 2025Q3
- +95,300 · 2025Q3
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