Opko Health OPK Institutional Ownership

NASDAQ OPK

$1.63 +0.02 (+1.56%)

As of: Oct 22, 2026 · 9:47 AM EDT

Institutions by Trading Activity

221 Institutions

Increased 98 44.3%

Unchanged 72 32.6%

Reduced 51 23.1%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

26.63%

▲+0.14 pp QoQ

Shares Held by Institutions

201.10Mn

of 755.27Mn outstanding

▲+0.05% QoQ

Shares Outstanding

755.27Mn

554.17Mn held outside 13F filers

Institutional Investors

221

filed 13F for Jun 2026

▼-12 vs prior quarter

Net Shares Added (QoQ)

+110.31K

accumulated since last quarter

Value of Holdings

$333.82Mn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Updated Oct 11, 2026

Opko Health, Inc. (NASDAQ:OPK) appeared in the 13F filings of 221 institutional investors for the quarter ended June 30, 2026.

Collectively, these holders controlled 26.63% of Opko Health's outstanding shares in Q2 2026, up from 26.48% in Q1 2026.
Total shares held in Opko Health rose 0.05% versus Q1 2026, while the number of holders rose 1.84% versus Q2 2025.
Of the 221 holders of OPK in Q2 2026, 98 added to their positions, 51 reduced their stakes and 72 left their positions unchanged.
Institutional investors held 201.1Mn shares of Opko Health in total at the end of Q2 2026, up 110.31K from the prior quarter and down 1.78Mn from a year earlier.
Rubric Capital Management LP was the top holder of Opko Health as of June 30, 2026, with 47.79Mn shares, or 6.33% of shares outstanding.
The biggest increases in OPK positions during Q2 2026 came from State Street Corp (+807.69K shares), Morgan Stanley (+778.94K shares), BlackRock, Inc. (+746.67K shares), California State Teachers Retirement System (+547.45K shares) and AQR Capital Management LLC (+475.81K shares).
The largest position reductions in OPK for Q2 2026 were by UBS Group AG (-1.07Mn shares), Jane Street Group, LLC (-884.92K shares), Citadel Advisors LLC (-658.62K shares), Goldman Sachs Group Inc (-639.53K shares) and PFG Investments, LLC (-502.29K shares).
Per Business Quant, the top 10 investors in OPK for the quarter ended June 30, 2026 were Rubric Capital Management LP (47.79Mn shares), BlackRock, Inc. (36.98Mn shares), Vanguard Capital Management LLC (14.97Mn shares), Vanguard Portfolio Management LLC (14.93Mn shares), Geode Capital Management, LLC (11.58Mn shares), State Street Corp (10.31Mn shares), Goldman Sachs Group Inc (7.04Mn shares), UBS Group AG (5.01Mn shares), Whitefort Capital Management, LP (4.51Mn shares) and Northern Trust Corp (3.76Mn shares).

Form 13F Holdings

221 Institutional Holders

Report period 30 Jun, 2026

Total shares held 201.10Mn

Of outstanding 26.63%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	Rubric Capital Management LP	0001687509	47,791,243	6.33%	0	0.00%	$71.69Mn
2	BlackRock, Inc.	0002012383	36,978,893	4.90%	▲746,670	+2.06%	$55.47Mn
3	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	14,968,930	1.98%	▲469,766	+3.24%	$22.45Mn
4	VANGUARD PORTFOLIO MANAGEMENT LLC	0002100121	14,934,924	1.98%	▲165,205	+1.12%	$22.40Mn
5	GEODE CAPITAL MANAGEMENT, LLC	0001214717	11,581,027	1.53%	▲279,526	+2.47%	$17.38Mn
6	State Street Corp	0000093751	10,309,070	1.36%	▲807,693	+8.50%	$15.46Mn
7	Goldman Sachs Group Inc	0000886982	7,035,492	0.93%	▼639,534	-8.33%	$10.55Mn
8	UBS Group AG	0001610520	5,006,284	0.66%	▼1,065,148	-17.54%	$7.51Mn
9	Whitefort Capital Management, LP	0001884931	4,511,412	0.60%	▲258,072	+6.07%	$6.77Mn
10	Northern Trust Corp	0000073124	3,756,163	0.50%	▲136,817	+3.78%	$5.63Mn
11	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	0000884546	3,596,980	0.48%	▲22,941	+0.64%	$5.40Mn
12	HIGHBRIDGE CAPITAL MANAGEMENT LLC	0000919185	3,593,925	0.48%	▲3,593,925	0.00%	$5.43Mn
13	VANGUARD FIDUCIARY TRUST CO	0000933478	2,706,235	0.36%	▼35,782	-1.30%	$4.06Mn
14	AWM Investment Company, Inc.	0001535264	2,110,000	0.28%	▲10,000	+0.48%	$3.17Mn
15	Morgan Stanley	0000895421	1,975,027	0.26%	▲778,940	+65.12%	$2.96Mn
16	CITADEL ADVISORS LLC	0001423053	1,420,922	0.19%	▼658,625	-31.67%	$2.13Mn
17	WASHINGTON GROWTH STRATEGIES LLC	0002044575	1,356,124	0.18%	0	0.00%	$2.03Mn
18	Bank of New York Mellon Corp	0001390777	1,329,974	0.18%	▲49,932	+3.90%	$1.99Mn
19	DIMENSIONAL FUND ADVISORS LP	0000354204	1,267,741	0.17%	▼292,259	-18.73%	$1.90Mn
20	AQR CAPITAL MANAGEMENT LLC	0001167557	1,239,399	0.16%	▲475,809	+62.31%	$1.86Mn

Showing 1 to 20 of 221 holders