Opko Health
OPK
233 hedge funds and large institutions have $304M invested in Opko Health in 2025 Q3 according to their latest regulatory filings, with 29 funds opening new positions, 77 increasing their positions, 53 reducing their positions, and 15 closing their positions.
1,936% more call options, than puts
Call options by funds: $4.26M | Put options by funds: $209K
93% more first-time investments, than exits
New positions opened: 29 | Existing positions closed: 15
45% more repeat investments, than reductions
Existing positions increased: 77 | Existing positions reduced: 53
12% more capital invested
Capital invested by funds: $270M → $304M (+$33.2M)
5% more funds holding
Funds holding: 222 → 233 (+11)
1.14% less ownership
Funds ownership: 25.87% → 24.73% (-1.1%)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
WCM
Whitefort Capital Management
New York
|
+$4.29M |
| 2 |
AQR Capital Management
Greenwich,
Connecticut
|
+$2.66M |
| 3 |
BlackRock
New York
|
+$2.37M |
| 4 |
Geode Capital Management
Boston,
Massachusetts
|
+$781K |
| 5 |
Charles Schwab
San Francisco,
California
|
+$575K |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
WAM
Weiss Asset Management
Boston,
Massachusetts
|
-$4.98M |
| 2 |
Marshall Wace
London,
United Kingdom
|
-$4.42M |
| 3 |
GCM
Graham Capital Management
Rowayton,
Connecticut
|
-$2.49M |
| 4 |
Morgan Stanley
New York
|
-$1.68M |
| 5 |
Jane Street
New York
|
-$1.54M |
OPK Hedge Fund Activity: Q3 2025 in Review
233 of the 7,620 institutional investors tracked by Wall St. Rank reported a position in Opko Health (OPK) for Q3 2025, worth a combined $304M — up 12% from $270M a quarter earlier.
Buyers outnumbered sellers: 29 funds opened new OPK positions and 15 closed out — a net gain of 14 holders — while 77 added to existing stakes and 53 trimmed.
The largest buyer was Whitefort Capital Management, adding an estimated $4.29M. The largest seller was Weiss Asset Management, cutting an estimated $4.98M.
- 233 institutional investors held Opko Health (OPK) as of Q3 2025, up from 222 in Q2 2025.
- Funds reported $304M of Opko Health stock for Q3 2025, up 12% quarter-over-quarter.
- 29 funds opened new Opko Health positions in Q3 2025 and 15 closed out, a net change of +14 holders.
- The largest Opko Health buyer in Q3 2025 was Whitefort Capital Management, an estimated $4.29M added.
- The largest Opko Health seller in Q3 2025 was Weiss Asset Management, an estimated $4.98M sold.
Based on aggregated 13F filings for Q3 2025.