Qualys
QLYS
448 hedge funds and large institutions have $4.8B invested in Qualys in 2025 Q4 according to their latest regulatory filings, with 66 funds opening new positions, 165 increasing their positions, 164 reducing their positions, and 39 closing their positions.
138% more call options, than puts
Call options by funds: $15.3M | Put options by funds: $6.43M
69% more first-time investments, than exits
New positions opened: 66 | Existing positions closed: 39
4% more funds holding
Funds holding: 429 → 448 (+19)
2.51% more ownership
Funds ownership: 98.06% → 100.57% (+2.5%)
2% more capital invested
Capital invested by funds: $4.69B → $4.8B (+$109M)
1% more repeat investments, than reductions
Existing positions increased: 165 | Existing positions reduced: 164
33% less funds holding in top 10
Funds holding in top 10: 3 → 2 (-1)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Fuller & Thaler Asset Management
San Mateo,
California
|
+$81.4M |
| 2 |
CCMG
Clark Capital Management Group
Philadelphia,
Pennsylvania
|
+$40.1M |
| 3 |
Arrowstreet Capital
Boston,
Massachusetts
|
+$37.6M |
| 4 |
First Trust Advisors
Wheaton,
Illinois
|
+$36.7M |
| 5 |
Tudor Investment Corp
Stamford,
Connecticut
|
+$21.5M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
AQR Capital Management
Greenwich,
Connecticut
|
-$51.9M |
| 2 |
Alyeska Investment Group
Chicago,
Illinois
|
-$45.9M |
| 3 |
Neuberger Berman Group
New York
|
-$32.3M |
| 4 |
Fundsmith LLP
London,
United Kingdom
|
-$30.7M |
| 5 |
BlackRock
New York
|
-$14.4M |
QLYS Hedge Fund Activity: Q4 2025 in Review
448 of the 8,267 institutional investors tracked by Wall St. Rank reported a position in Qualys (QLYS) for Q4 2025, worth a combined $4.8B — up 2.3% from $4.69B a quarter earlier.
Buyers outnumbered sellers: 66 funds opened new QLYS positions and 39 closed out — a net gain of 27 holders — while 165 added to existing stakes and 164 trimmed.
The largest buyer was Fuller & Thaler Asset Management, opening a new position worth an estimated $81.4M. The largest seller was AQR Capital Management, cutting an estimated $51.9M.
- 448 institutional investors held Qualys (QLYS) as of Q4 2025, up from 429 in Q3 2025.
- Funds reported $4.8B of Qualys stock for Q4 2025, up 2.3% quarter-over-quarter.
- 66 funds opened new Qualys positions in Q4 2025 and 39 closed out, a net change of +27 holders.
- The largest Qualys buyer in Q4 2025 was Fuller & Thaler Asset Management, an estimated $81.4M added.
- The largest Qualys seller in Q4 2025 was AQR Capital Management, an estimated $51.9M sold.
Based on aggregated 13F filings for Q4 2025.