OPK Institutional Ownership
Who owns Opko Health, Inc. and what the big funds did with it last quarter, from every SEC 13F filing. 224 funds reported holding OPK at Jun 30, 2026, together owning 27.2% of the company.
- ▲98 buying vs 80 selling
- ●Held by funds +0.2 pts
- ▼Funds holding -12
- ●Superinvestors: 2 added, 2 cut
- ●Put/call not meaningful
What the filings show, not a forecast. Positions can be up to 45 days old and leave out short sales.
Funds holding and ownership
8 quartersQuarter over quarter
all 13F filers| Q2 2026 | This quarter | Q1 2026 | Change |
|---|---|---|---|
| Funds holding | 224 | 236 | −5.1% |
| In funds' top 10 | 0 | 0 | – |
| 13F shares | 203M | 201M | +0.8% |
| Held by funds | 27.2% | 27.0% | +0.2 pts |
| New positions | 22 | 35 | −37.1% |
| Increased | 76 | 59 | +28.8% |
| Reduced | 49 | 60 | −18.3% |
| Sold out | 31 | 25 | +24.0% |
| Calls (shares) | 6,523 | 6,521 | +0.0% |
| Puts (shares) | 0 | 0 | – |
| Put/call ratio | 0.00 | 0.00 | – |
Buyers vs sellers
adding or new vs cutting or sold outSuperinvestors in OPK
All superinvestors →
Who owns OPK
share of fund held shares- Index and passive funds50.4%
- Active managers and hedge funds38.5%
- Banks and brokers10.2%
- Pensions, insurers and other0.9%
The top 10 holders own 77.3% of all OPK shares that funds reported. Groups are our own grouping of filers by name.
Put/call ratio
funds' options, market makers left outAbove 1 means funds hold more puts than calls, a sign of hedging or bets on a fall. Options are valued at the underlying shares.
Filed so far for Q3 2026
35 funds changed their position- Assenagon Asset Management S.A.Trimmed−285K sh
- State of WyomingAdded+180K sh
- Flagship Harbor Advisors, LLCNew+100K sh
- Y.D. More Investments LtdTrimmed−87K sh
- Cambridge Investment Research Advisors, Inc.Trimmed−82K sh
🔒 Free account: see all 20.
Top holders
Q2 2026| # | Fund | Of company | Shares | Value | Change |
|---|---|---|---|---|---|
| 1 | Rubric Capital Management LP | 6.40% | 47.8M | $71.7M | 0 |
| 2 | BlackRock, Inc. | 4.95% | 37M | $55.5M | +747K |
| 3 | Vanguard Capital Management LLC | 2.01% | 15M | $22.5M | +470K |
| 4 | Vanguard Portfolio Management LLC | 2.00% | 14.9M | $22.4M | +165K |
| 5 | Geode Capital Management, LLC | 1.55% | 11.6M | $17.4M | +280K |
| 6 | State Street Corp | 1.38% | 10.3M | $15.5M | +808K |
| 7 | Goldman Sachs Group Inc | 0.94% | 7M | $10.6M | −640K |
| 8 | UBS Group AG | 0.67% | 5M | $7.5M | −1.1M |
| 9 | Whitefort Capital Management, LP | 0.60% | 4.5M | $6.8M | +258K |
| 10 | Northern Trust Corp | 0.50% | 3.8M | $5.6M | +137K |
- Highbridge Capital Management LLC+3.6M sh+$5.4M
- State Street Corp+808K sh+$1.2M
- Morgan Stanley+779K sh+$1.2M
- BlackRock, Inc.+747K sh+$1.1M
- California State Teachers Retirement System+547K sh+$821K
- AQR Capital Management LLC+476K sh+$714K
- Vanguard Capital Management LLC+470K sh+$705K
- Algert Global LLC+397K sh+$596K
- UBS Group AG−1.1M sh−$1.6M
- Jane Street Group, LLC−885K sh−$1.3M
- Tejara Capital Ltd−878K sh−$1M
- Citadel Advisors LLC−659K sh−$988K
- Goldman Sachs Group Inc−640K sh−$959K
- Gsa Capital Partners LLP−664K sh−$757K
- PFG Investments, LLC−502K sh−$753K
- First Trust Advisors LP−500K sh−$570K
OPK institutional ownership FAQ
Who owns the most OPK stock?
In Q2 2026 13F filings the largest holder of OPK was Rubric Capital Management LP, followed by BlackRock, Inc. and Vanguard Capital Management LLC. Index fund managers are usually the biggest holders of large companies.
What percentage of OPK is owned by institutions?
Funds that file 13F reports held 27.2% of OPK's shares at Jun 30, 2026, compared with 27.0% a quarter earlier. That counts every manager with more than $100 million in US stocks.
Are hedge funds buying OPK?
In Q2 2026, 98 funds bought OPK (22 of them new positions) and 80 sold (31 sold out completely). Among well known investors, 2 added and 2 cut. Our fund sentiment for OPK is neutral.
What is OPK's institutional put/call ratio?
Funds reported $0 of OPK puts against $10K of calls, a put/call ratio of 0.00 (0.00 the quarter before). Market makers and bank trading desks are left out, since their options are mostly hedges.
How current is this OPK ownership data?
13F filings show holdings at the end of each quarter and are due within 45 days, so positions can be up to six weeks old when they appear. We add each new filing within minutes, and the "filed so far" list shows funds that have already reported the next quarter.
For informational and educational purposes only. Not investment advice, and not a recommendation to buy or sell any security. Fund sentiment summarises what 13F filings show and is not a forecast. Holdings come from SEC Form 13F filings as reported and show positions at the end of the quarter, up to 45 days before the filing. A 13F leaves out short positions, cash, bonds and most foreign holdings. See all hedge fund holdings.