There is a long list of 218 institutional holders of OPK within the last two holding periods in our database of 13F filers, so we've sorted through to present to you just the top 50 institutional holders of OPK by largest to smallest position reported in the institutional investor's latest 13F filing. In the institutional-holders-of-OPK table below, the initial column indicates the name of each top institutional holder of OPK, with a link to that fund's top holdings. The next columns indicate the amount of OPK stock held by each of the institutional holders of OPK, followed by the OPK position size held by the institution, and finally the date of the quarterly 13F filing period the holdings data represents for that institution.

Holder	Amount	Position Size ($ in 1000's)	As of
Opti Capital Management LP		$39,607,565	12/31/2023
NOTE 4	40,173,000	$39,607,565	12/31/2023
PenderFund Capital Management Ltd.		$18,534,932	12/31/2023
NOTE 4	14,000,000	$18,534,932	12/31/2023
Vanguard Group Inc.	39,751,293	$60,024	12/31/2023
OPK	39,751,293	$60,024	12/31/2023
BlackRock Inc.	36,965,429	$55,818	12/31/2023
OPK	36,965,429	$55,818	12/31/2023
Graham Capital Management L.P.		$53,810	12/31/2023
NOTE 4	54,524,000	$53,454	12/31/2023
OPK	235,604	$356	12/31/2023
Geode Capital Management LLC	9,719,368	$14,678	12/31/2023
OPK	9,719,368	$14,678	12/31/2023
State Street Corp	9,306,684	$14,053	12/31/2023
OPK	9,306,684	$14,053	12/31/2023
Context Capital Management LLC		$11,537	12/31/2023
NOTE 4	11,750,000	$11,537	12/31/2023
D. E. Shaw & Co. Inc.	5,842,537	$8,822	12/31/2023
OPK	5,842,537	$8,822	12/31/2023
Charles Schwab Investment Management Inc.	5,733,700	$8,658	12/31/2023
OPK	5,733,700	$8,658	12/31/2023
Invesco Ltd.	5,494,276	$8,296	12/31/2023
OPK	5,494,276	$8,296	12/31/2023
Northern Trust Corp	5,034,255	$7,602	12/31/2023
OPK	5,034,255	$7,602	12/31/2023
Dimensional Fund Advisors LP	3,449,062	$5,210	12/31/2023
OPK	3,449,062	$5,210	12/31/2023
Goldman Sachs Group Inc.	2,909,499	$4,393	12/31/2023
OPK	2,909,499	$4,393	12/31/2023
Intrinsic Edge Capital Management LLC		$4,228	12/31/2023
Call	1,800,000	$2,718	12/31/2023
OPK	1,000,000	$1,510	12/31/2023
Norges Bank	2,703,082	$4,082	12/31/2023
OPK	2,703,082	$4,082	12/31/2023
JPMorgan Chase & Co.		$3,147	12/31/2023
OPK	1,944,337	$2,936	12/31/2023
Call	140,000	$211	12/31/2023
Morgan Stanley	1,870,343	$2,824	12/31/2023
OPK	1,870,343	$2,824	12/31/2023
Voya Investment Management LLC	1,741,571	$2,630	12/31/2023
OPK	1,741,571	$2,630	12/31/2023
Portolan Capital Management LLC	1,661,766	$2,509	12/31/2023
OPK	1,661,766	$2,509	12/31/2023
Bank of New York Mellon Corp	1,613,399	$2,436	12/31/2023
OPK	1,613,399	$2,436	12/31/2023
Citigroup Inc.	1,549,582	$2,340	12/31/2023
OPK	1,549,582	$2,340	12/31/2023
Connor Clark & Lunn Investment Management Ltd.	1,538,716	$2,323	12/31/2023
OPK	1,538,716	$2,323	12/31/2023
UBS Group AG	1,413,300	$2,134	12/31/2023
OPK	1,413,300	$2,134	12/31/2023
Nuveen Asset Management LLC	1,147,369	$1,733	12/31/2023
OPK	1,147,369	$1,733	12/31/2023
Two Sigma Advisers LP	1,136,897	$1,717	12/31/2023
OPK	1,136,897	$1,717	12/31/2023
AWM Investment Company Inc.	1,100,000	$1,661	12/31/2023
OPK	1,100,000	$1,661	12/31/2023
Two Sigma Investments LP	968,815	$1,463	12/31/2023
OPK	968,815	$1,463	12/31/2023
Deutsche Bank AG	951,120	$1,436	12/31/2023
OPK	951,120	$1,436	12/31/2023
Credit Suisse AG	896,018	$1,353	12/31/2023
OPK	896,018	$1,353	12/31/2023
Swiss National Bank	837,855	$1,265	12/31/2023
OPK	837,855	$1,265	12/31/2023
Barclays PLC	768,078	$1,161	12/31/2023
OPK	768,078	$1,161	12/31/2023
Jupiter Asset Management Ltd.	765,198	$1,155	12/31/2023
OPK	765,198	$1,155	12/31/2023
Allianz Asset Management GmbH	764,209	$1,154	12/31/2023
OPK	764,209	$1,154	12/31/2023
Susquehanna International Group LLP		$1,011	12/31/2023
OPK	496,397	$750	12/31/2023
Call	267,500	$404	12/31/2023
Put	94,700	$143	12/31/2023
Rhumbline Advisers	650,017	$982	12/31/2023
OPK	650,017	$982	12/31/2023
Assenagon Asset Management S.A.	605,239	$960	12/31/2023
OPK	605,239	$960	12/31/2023
Hennion & Walsh Asset Management Inc.	776,020	$931	03/31/2024
OPK	776,020	$931	03/31/2024
Millennium Management LLC	596,444	$901	12/31/2023
OPK	596,444	$901	12/31/2023
Alliancebernstein L.P.	570,109	$861	12/31/2023
OPK	570,109	$861	12/31/2023
Simplex Trading LLC		$831	12/31/2023
Call	543,800	$821	12/31/2023
OPK	148,360	$224	12/31/2023
Put	142,300	$214	12/31/2023
Alps Advisors Inc.	536,481	$810	12/31/2023
OPK	536,481	$810	12/31/2023
Group One Trading L.P.		$786	12/31/2023
Call	311,500	$470	12/31/2023
OPK	308,615	$466	12/31/2023
Put	99,200	$150	12/31/2023
Citadel Advisors LLC		$729	12/31/2023
OPK	408,551	$617	12/31/2023
Call	207,400	$313	12/31/2023
Put	133,400	$201	12/31/2023
Marshall Wace LLP	465,493	$703	12/31/2023
OPK	465,493	$703	12/31/2023
California State Teachers Retirement System	444,922	$672	12/31/2023
OPK	444,922	$672	12/31/2023
Price T Rowe Associates Inc. MD	428,310	$647	12/31/2023
OPK	428,310	$647	12/31/2023
Legal & General Group Plc	418,602	$632	12/31/2023
OPK	418,602	$632	12/31/2023
Commonwealth Equity Services LLC	412,926	$624	12/31/2023
OPK	412,926	$624	12/31/2023
Bank of America Corp DE	408,055	$616	12/31/2023
OPK	408,055	$616	12/31/2023

See All: Funds Holding OPK
See Details: Top 10 Hedge Funds Holding OPK
Also See: OPK Insider Buying
Also See: OPK Holdings Changes

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