Hologic
HOLX
HOLX was delisted on the 6th of April, 2026.
750 hedge funds and large institutions have $16B invested in Hologic in 2025 Q4 according to their latest regulatory filings, with 140 funds opening new positions, 222 increasing their positions, 271 reducing their positions, and 112 closing their positions.
186% more funds holding in top 10
Funds holding in top 10: 7 → 20 (+13)
25% more first-time investments, than exits
New positions opened: 140 | Existing positions closed: 112
11% more capital invested
Capital invested by funds: $14.4B → $16B (+$1.62B)
1% more funds holding
Funds holding: 740 → 750 (+10)
0.46% more ownership
Funds ownership: 95.9% → 96.36% (+0.46%)
18% less repeat investments, than reductions
Existing positions increased: 222 | Existing positions reduced: 271
76% less call options, than puts
Call options by funds: $18.4M | Put options by funds: $77.7M
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
HI
HBK Investments
Dallas,
Texas
|
+$614M |
| 2 |
Fidelity International
Hamilton,
Bermuda
|
+$378M |
| 3 |
PCM
Pentwater Capital Management
Naples,
Florida
|
+$310M |
| 4 |
BlackRock
New York
|
+$196M |
| 5 |
UOC
UBS O'Connor
Chicago,
Illinois
|
+$190M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
T. Rowe Price Investment Management
Baltimore,
Maryland
|
-$1.14B |
| 2 |
Invesco
Atlanta,
Georgia
|
-$256M |
| 3 |
BCIM
Black Creek Investment Management
Toronto,
Ontario, Canada
|
-$253M |
| 4 |
Nordea Investment Management
Stockholm,
Sweden
|
-$205M |
| 5 |
Citadel Advisors
Miami,
Florida
|
-$172M |
HOLX Hedge Fund Activity: Q4 2025 in Review
750 of the 8,283 institutional investors tracked by Wall St. Rank reported a position in Hologic (HOLX) for Q4 2025, worth a combined $16B — up 11% from $14.4B a quarter earlier.
Buyers outnumbered sellers: 140 funds opened new HOLX positions and 112 closed out — a net gain of 28 holders — while 222 added to existing stakes and 271 trimmed.
The largest buyer was HBK Investments, opening a new position worth an estimated $614M. The largest seller was T. Rowe Price Investment Management, cutting an estimated $1.14B.
- 750 institutional investors held Hologic (HOLX) as of Q4 2025, up from 740 in Q3 2025.
- Funds reported $16B of Hologic stock for Q4 2025, up 11% quarter-over-quarter.
- 140 funds opened new Hologic positions in Q4 2025 and 112 closed out, a net change of +28 holders.
- The largest Hologic buyer in Q4 2025 was HBK Investments, an estimated $614M added.
- The largest Hologic seller in Q4 2025 was T. Rowe Price Investment Management, an estimated $1.14B sold.
Based on aggregated 13F filings for Q4 2025.