On this page, we present all of the funds holding OSUR from our database of 13F filers, detailed in the table below. The first column indicates the name of each of the funds holding OSUR, with a link to that fund's top holdings. The next columns indicate the amount of OSUR stock held by each of the funds holding OSUR, followed by the OSUR position size held by the fund, and lastly the date of the quarterly filing period the data represents. In total, we count 216 funds holding OSUR within the last two filing periods in our coverage universe of 13F filers, with the largest position size having been reported by BlackRock Inc.. For more details on the positions held by BlackRock Inc. (or by any of the other funds holding OSUR), click the fund name in the "Holder" column of the funds-holding-OSUR table below.

Holder	Amount	Position Size ($ in 1000's)	As of
BlackRock Inc.	12,622,864	$103,507	12/31/2023
OSUR	12,622,864	$103,507	12/31/2023
Vanguard Group Inc.	5,309,456	$43,538	12/31/2023
OSUR	5,309,456	$43,538	12/31/2023
Camber Capital Management LP	4,250,000	$34,850	12/31/2023
OSUR	4,250,000	$34,850	12/31/2023
Dimensional Fund Advisors LP	3,906,687	$32,035	12/31/2023
OSUR	3,906,687	$32,035	12/31/2023
Cannell Capital LLC	3,549,050	$29,102	12/31/2023
OSUR	3,549,050	$29,102	12/31/2023
Neuberger Berman Group LLC	3,129,142	$25,672	12/31/2023
OSUR	3,129,142	$25,672	12/31/2023
State Street Corp	2,919,874	$23,943	12/31/2023
OSUR	2,919,874	$23,943	12/31/2023
Pacer Advisors Inc.	2,403,333	$19,707	12/31/2023
OSUR	2,403,333	$19,707	12/31/2023
Renaissance Technologies LLC	1,657,343	$13,590	12/31/2023
OSUR	1,657,343	$13,590	12/31/2023
Morgan Stanley	1,631,242	$13,376	12/31/2023
OSUR	1,631,242	$13,376	12/31/2023
Geode Capital Management LLC	1,591,006	$13,048	12/31/2023
OSUR	1,591,006	$13,048	12/31/2023
Invesco Ltd.	1,476,870	$12,110	12/31/2023
OSUR	1,476,870	$12,110	12/31/2023
American Capital Management Inc.	1,430,926	$11,734	12/31/2023
OSUR	1,430,926	$11,734	12/31/2023
Archon Capital Management LLC	1,240,693	$10,174	12/31/2023
OSUR	1,240,693	$10,174	12/31/2023
Systematic Financial Management LP	1,133,037	$9,291	12/31/2023
OSUR	1,133,037	$9,291	12/31/2023
Acadian Asset Management LLC	1,086,454	$8,905	12/31/2023
OSUR	1,086,454	$8,905	12/31/2023
AQR Capital Management LLC	831,343	$6,817	12/31/2023
OSUR	831,343	$6,817	12/31/2023
American Century Companies Inc.	816,741	$6,697	12/31/2023
OSUR	816,741	$6,697	12/31/2023
Bridgeway Capital Management Inc.	793,954	$6,510	12/31/2023
OSUR	793,954	$6,510	12/31/2023
Charles Schwab Investment Management Inc.	774,824	$6,354	12/31/2023
OSUR	774,824	$6,354	12/31/2023
Northern Trust Corp	772,241	$6,332	12/31/2023
OSUR	772,241	$6,332	12/31/2023
Primecap Management Co. CA	761,720	$6,246	12/31/2023
OSUR	761,720	$6,246	12/31/2023
Wells Fargo & Company MN	721,914	$5,920	12/31/2023
OSUR	721,914	$5,920	12/31/2023
Bank of New York Mellon Corp	692,138	$5,676	12/31/2023
OSUR	692,138	$5,676	12/31/2023
Globeflex Capital L P	523,978	$4,297	12/31/2023
OSUR	523,978	$4,297	12/31/2023
Nuveen Asset Management LLC	508,329	$4,168	12/31/2023
OSUR	508,329	$4,168	12/31/2023
Arrowstreet Capital Limited Partnership	469,600	$3,851	12/31/2023
OSUR	469,600	$3,851	12/31/2023
Prudential Financial Inc.	442,045	$3,625	12/31/2023
OSUR	442,045	$3,625	12/31/2023
Principal Financial Group Inc.	404,321	$3,315	12/31/2023
OSUR	404,321	$3,315	12/31/2023
Panagora Asset Management Inc.	386,838	$3,172	12/31/2023
OSUR	386,838	$3,172	12/31/2023
Allspring Global Investments Holdings LLC	492,477	$3,029	03/31/2024
OSUR	492,477	$3,029	03/31/2024
Goldman Sachs Group Inc.	318,338	$2,610	12/31/2023
OSUR	318,338	$2,610	12/31/2023
D. E. Shaw & Co. Inc.	289,731	$2,376	12/31/2023
OSUR	289,731	$2,376	12/31/2023
Fisher Asset Management LLC	288,693	$2,367	12/31/2023
OSUR	288,693	$2,367	12/31/2023
Kennedy Capital Management Inc.	284,651	$2,334	12/31/2023
OSUR	284,651	$2,334	12/31/2023
Ameriprise Financial Inc.	265,135	$2,174	12/31/2023
OSUR	265,135	$2,174	12/31/2023
Los Angeles Capital Management & Equity Research Inc.	341,125	$2,098	03/31/2024
OSUR	341,125	$2,098	03/31/2024
Prelude Capital Management LLC	244,982	$2,009	12/31/2023
OSUR	244,982	$2,009	12/31/2023
Rhumbline Advisers	225,985	$1,853	12/31/2023
OSUR	225,985	$1,853	12/31/2023
Connor Clark & Lunn Investment Management Ltd.	218,499	$1,792	12/31/2023
OSUR	218,499	$1,792	12/31/2023
Martingale Asset Management L P	214,102	$1,756	12/31/2023
OSUR	214,102	$1,756	12/31/2023
Legal & General Group Plc	207,340	$1,700	12/31/2023
OSUR	207,340	$1,700	12/31/2023
Jacobs Levy Equity Management Inc.	205,310	$1,684	12/31/2023
OSUR	205,310	$1,684	12/31/2023
Brandywine Global Investment Management LLC	202,386	$1,660	12/31/2023
OSUR	202,386	$1,660	12/31/2023
First Trust Advisors LP	201,936	$1,656	12/31/2023
OSUR	201,936	$1,656	12/31/2023
Deutsche Bank AG	195,638	$1,604	12/31/2023
OSUR	195,638	$1,604	12/31/2023
JPMorgan Chase & Co.	171,333	$1,405	12/31/2023
OSUR	171,333	$1,405	12/31/2023
Empowered Funds LLC	165,754	$1,359	12/31/2023
OSUR	165,754	$1,359	12/31/2023
Trexquant Investment LP	165,201	$1,355	12/31/2023
OSUR	165,201	$1,355	12/31/2023
Factorial Partners LLC	163,000	$1,337	12/31/2023
OSUR	163,000	$1,337	12/31/2023
Exchange Traded Concepts LLC	207,163	$1,274	03/31/2024
OSUR	207,163	$1,274	03/31/2024
New York State Teachers Retirement System	154,099	$1,264	12/31/2023
OSUR	154,099	$1,264	12/31/2023
Public Sector Pension Investment Board	152,492	$1,250	12/31/2023
OSUR	152,492	$1,250	12/31/2023
Swiss National Bank	144,700	$1,187	12/31/2023
OSUR	144,700	$1,187	12/31/2023
South Dakota Investment Council	142,230	$1,166	12/31/2023
OSUR	142,230	$1,166	12/31/2023
Barclays PLC	131,667	$1,080	12/31/2023
OSUR	131,667	$1,080	12/31/2023
Teacher Retirement System of Texas	129,621	$1,063	12/31/2023
OSUR	129,621	$1,063	12/31/2023
State of Wyoming	124,357	$1,020	12/31/2023
OSUR	124,357	$1,020	12/31/2023
Allianz Asset Management GmbH	121,739	$998	12/31/2023
OSUR	121,739	$998	12/31/2023
Alliancebernstein L.P.	114,776	$941	12/31/2023
OSUR	114,776	$941	12/31/2023
Credit Suisse AG	102,566	$841	12/31/2023
OSUR	102,566	$841	12/31/2023
Great West Life Assurance Co. Can	100,695	$823	12/31/2023
OSUR	100,695	$823	12/31/2023
Putnam Investments LLC	94,775	$777	12/31/2023
OSUR	94,775	$777	12/31/2023
CWM Advisors LLC	94,534	$775	12/31/2023
OSUR	94,534	$775	12/31/2023
State of Tennessee Treasury Department	84,836	$696	12/31/2023
OSUR	84,836	$696	12/31/2023
UBS Asset Management Americas Inc.	83,470	$684	12/31/2023
OSUR	83,470	$684	12/31/2023
Aviva PLC	83,229	$682	12/31/2023
OSUR	83,229	$682	12/31/2023
Price T Rowe Associates Inc. MD	78,106	$641	12/31/2023
OSUR	78,106	$641	12/31/2023
California State Teachers Retirement System	77,218	$633	12/31/2023
OSUR	77,218	$633	12/31/2023
State of Wisconsin Investment Board	76,763	$629	12/31/2023
OSUR	76,763	$629	12/31/2023
ExodusPoint Capital Management LP	74,678	$612	12/31/2023
OSUR	74,678	$612	12/31/2023
Assenagon Asset Management S.A.	93,917	$578	03/31/2024
OSUR	93,917	$578	03/31/2024
Balyasny Asset Management LLC	68,663	$563	12/31/2023
OSUR	68,663	$563	12/31/2023
Thrivent Financial for Lutherans	65,480	$537	12/31/2023
OSUR	65,480	$537	12/31/2023
Murphy Pohlad Asset Management LLC	84,850	$522	03/31/2024
OSUR	84,850	$522	03/31/2024
Texas Permanent School Fund	63,479	$521	12/31/2023
OSUR	63,479	$521	12/31/2023
O Shaughnessy Asset Management LLC	62,217	$510	12/31/2023
OSUR	62,217	$510	12/31/2023
Bank of America Corp DE	61,644	$505	12/31/2023
OSUR	61,644	$505	12/31/2023
DZ BANK AG Deutsche Zentral Genossenschafts Bank Frankfurt am Main	60,382	$495	12/31/2023
OSUR	60,382	$495	12/31/2023
Voya Investment Management LLC	58,567	$480	12/31/2023
OSUR	58,567	$480	12/31/2023
Two Sigma Investments LP	57,500	$472	12/31/2023
OSUR	57,500	$472	12/31/2023
Royce & Associates LP	56,649	$465	12/31/2023
OSUR	56,649	$465	12/31/2023
Ensign Peak Advisors Inc	55,168	$452	12/31/2023
OSUR	55,168	$452	12/31/2023
Pathstone Holdings LLC	54,537	$447	12/31/2023
OSUR	54,537	$447	12/31/2023
Federated Hermes Inc.	54,340	$446	12/31/2023
OSUR	54,340	$446	12/31/2023
Truist Financial Corp	52,471	$430	12/31/2023
OSUR	52,471	$430	12/31/2023
Yousif Capital Management LLC	51,786	$425	12/31/2023
OSUR	51,786	$425	12/31/2023
Strs Ohio	51,700	$423	12/31/2023
OSUR	51,700	$423	12/31/2023
Lazard Asset Management LLC	50,408	$412	12/31/2023
OSUR	50,408	$412	12/31/2023
Orion Portfolio Solutions LLC	52,460	$409	12/31/2023
OSUR	52,460	$409	12/31/2023
Campbell & CO Investment Adviser LLC	49,812	$408	12/31/2023
OSUR	49,812	$408	12/31/2023
Royal Bank of Canada	47,781	$392	12/31/2023
OSUR	47,781	$392	12/31/2023
Victory Capital Management Inc.	45,881	$376	12/31/2023
OSUR	45,881	$376	12/31/2023
Centiva Capital LP	45,731	$375	12/31/2023
OSUR	45,731	$375	12/31/2023
Illinois Municipal Retirement Fund	45,062	$370	12/31/2023
OSUR	45,062	$370	12/31/2023
Citigroup Inc.	43,657	$358	12/31/2023
OSUR	43,657	$358	12/31/2023
MetLife Investment Management LLC	43,288	$355	12/31/2023
OSUR	43,288	$355	12/31/2023
Susquehanna International Group LLP		$351	12/31/2023
OSUR	22,105	$181	12/31/2023
Call	20,700	$170	12/31/2023
Envestnet Asset Management Inc.	42,389	$348	12/31/2023
OSUR	42,389	$348	12/31/2023
Sei Investments Co.	41,239	$338	12/31/2023
OSUR	41,239	$338	12/31/2023
WINTON GROUP Ltd	40,903	$335	12/31/2023
OSUR	40,903	$335	12/31/2023
Quadrant Private Wealth Management LLC	40,142	$329	12/31/2023
OSUR	40,142	$329	12/31/2023
Franklin Resources Inc.	40,036	$328	12/31/2023
OSUR	40,036	$328	12/31/2023
Mirae Asset Global Investments Co. Ltd.	39,618	$325	12/31/2023
OSUR	39,618	$325	12/31/2023
American International Group Inc.	39,236	$322	12/31/2023
OSUR	39,236	$322	12/31/2023
Sawtooth Solutions LLC	38,885	$319	12/31/2023
OSUR	38,885	$319	12/31/2023
Bleakley Financial Group LLC	38,885	$319	12/31/2023
OSUR	38,885	$319	12/31/2023
UBS Group AG	37,972	$311	12/31/2023
OSUR	37,972	$311	12/31/2023
Engineers Gate Manager LP	37,645	$309	12/31/2023
OSUR	37,645	$309	12/31/2023
Mariner LLC	36,378	$298	12/31/2023
OSUR	36,378	$298	12/31/2023
Robeco Institutional Asset Management B.V.	48,242	$297	03/31/2024
OSUR	48,242	$297	03/31/2024
Comerica Bank	34,762	$285	12/31/2023
OSUR	34,762	$285	12/31/2023
State Board of Administration of Florida Retirement System	34,338	$282	12/31/2023
OSUR	34,338	$282	12/31/2023
CI Private Wealth LLC	33,725	$277	12/31/2023
OSUR	33,725	$277	12/31/2023
State of Alaska Department of Revenue	44,766	$275	03/31/2024
OSUR	44,766	$275	03/31/2024
Public Employees Retirement System of Ohio	33,195	$272	12/31/2023
OSUR	33,195	$272	12/31/2023
Janus Henderson Group PLC	30,369	$249	12/31/2023
OSUR	30,369	$249	12/31/2023
Manatuck Hill Partners LLC	30,000	$246	12/31/2023
OSUR	30,000	$246	12/31/2023
Tower Research Capital LLC TRC	29,826	$245	12/31/2023
OSUR	29,826	$245	12/31/2023
Millennium Management LLC	29,600	$243	12/31/2023
OSUR	29,600	$243	12/31/2023
Hsbc Holdings PLC	28,343	$233	12/31/2023
OSUR	28,343	$233	12/31/2023
The Manufacturers Life Insurance Company	28,312	$232	12/31/2023
OSUR	28,312	$232	12/31/2023
Everence Capital Management Inc.	28,300	$232	12/31/2023
OSUR	28,300	$232	12/31/2023
Mackenzie Financial Corp	27,964	$229	12/31/2023
OSUR	27,964	$229	12/31/2023
Louisiana State Employees Retirement System	36,400	$224	03/31/2024
OSUR	36,400	$224	03/31/2024
ARP Americas LP	27,000	$221	12/31/2023
OSUR	27,000	$221	12/31/2023
Simplicity Wealth LLC	34,717	$214	03/31/2024
OSUR	34,717	$214	03/31/2024
EntryPoint Capital LLC	25,716	$211	12/31/2023
OSUR	25,716	$211	12/31/2023
Graham Capital Management L.P.	25,441	$209	12/31/2023
OSUR	25,441	$209	12/31/2023
Syon Capital LLC	25,241	$207	12/31/2023
OSUR	25,241	$207	12/31/2023
Nkcfo LLC	25,000	$205	12/31/2023
OSUR	25,000	$205	12/31/2023
Cornerstone Investment Partners LLC	24,886	$204	12/31/2023
OSUR	24,886	$204	12/31/2023
Corton Capital Inc.	24,317	$199	12/31/2023
OSUR	24,317	$199	12/31/2023
One Wealth Advisors LLC	29,976	$184	03/31/2024
OSUR	29,976	$184	03/31/2024
Deerfield Management Company L.P. Series C	21,639	$177	12/31/2023
OSUR	21,639	$177	12/31/2023
Oregon Public Employees Retirement Fund	21,491	$176	12/31/2023
OSUR	21,491	$176	12/31/2023
Arizona State Retirement System	20,523	$168	12/31/2023
OSUR	20,523	$168	12/31/2023
Maryland State Retirement & Pension System	27,135	$167	03/31/2024
OSUR	27,135	$167	03/31/2024
BNP Paribas Arbitrage SA	20,381	$167	12/31/2023
OSUR	20,381	$167	12/31/2023
Shell Asset Management Co.	20,053	$164	12/31/2023
OSUR	20,053	$164	12/31/2023
New York State Common Retirement Fund	19,321	$158	12/31/2023
OSUR	19,321	$158	12/31/2023
Moors & Cabot Inc.	19,000	$156	12/31/2023
OSUR	19,000	$156	12/31/2023
The PNC Financial Services Group Inc.	18,534	$152	12/31/2023
OSUR	18,534	$152	12/31/2023
Susquehanna Portfolio Strategies LLC	18,171	$149	12/31/2023
OSUR	18,171	$149	12/31/2023
Amalgamated Bank	23,709	$146	03/31/2024
OSUR	23,709	$146	03/31/2024
Guggenheim Capital LLC	17,843	$146	12/31/2023
OSUR	17,843	$146	12/31/2023
Squarepoint Ops LLC	17,553	$144	12/31/2023
OSUR	17,553	$144	12/31/2023
LPL Financial LLC	16,566	$136	12/31/2023
OSUR	16,566	$136	12/31/2023
GWM Advisors LLC	17,140	$136	12/31/2023
OSUR	17,140	$136	12/31/2023
Public Employees Retirement Association of Colorado	16,476	$135	12/31/2023
OSUR	16,476	$135	12/31/2023
Teachers Retirement System of The State of Kentucky	16,461	$135	12/31/2023
OSUR	16,461	$135	12/31/2023
Counterpoint Mutual Funds LLC	21,374	$131	03/31/2024
OSUR	21,374	$131	03/31/2024
Russell Investments Group Ltd.	15,968	$131	12/31/2023
OSUR	15,968	$131	12/31/2023
FMR LLC	15,821	$130	12/31/2023
OSUR	15,821	$130	12/31/2023
Commonwealth of Pennsylvania Public School Empls Retrmt SYS	15,857	$130	12/31/2023
OSUR	15,857	$130	12/31/2023
Zurcher Kantonalbank Zurich Cantonalbank	15,184	$125	12/31/2023
OSUR	15,184	$125	12/31/2023
Two Sigma Advisers LP	15,200	$125	12/31/2023
OSUR	15,200	$125	12/31/2023
Nebula Research & Development LLC	14,126	$116	12/31/2023
OSUR	14,126	$116	12/31/2023
Baader Bank INC	14,100	$115	12/31/2023
OSUR	14,100	$115	12/31/2023
Dynamic Technology Lab Private Ltd	13,775	$113	12/31/2023
OSUR	13,775	$113	12/31/2023
ProShare Advisors LLC	13,554	$111	12/31/2023
OSUR	13,554	$111	12/31/2023
Group One Trading L.P.		$109	12/31/2023
Call	23,400	$192	12/31/2023
Put	11,300	$93	12/31/2023
OSUR	1,256	$10	12/31/2023
Bank of Montreal Can	12,676	$106	12/31/2023
OSUR	12,676	$106	12/31/2023
Mutual of America Capital Management LLC	12,862	$105	12/31/2023
OSUR	12,862	$105	12/31/2023
Tocqueville Asset Management L.P.	12,577	$103	12/31/2023
OSUR	12,577	$103	12/31/2023
Diversified Trust Co	16,031	$99	03/31/2024
OSUR	16,031	$99	03/31/2024
Sheaff Brock Investment Advisors LLC	12,033	$99	12/31/2023
OSUR	12,033	$99	12/31/2023
Captrust Financial Advisors	11,398	$93	12/31/2023
OSUR	11,398	$93	12/31/2023
Oracle Alpha Inc.	10,641	$87	12/31/2023
OSUR	10,641	$87	12/31/2023
Argyle Capital Management Inc.	10,025	$82	12/31/2023
OSUR	10,025	$82	12/31/2023
Amundi	8,976	$70	12/31/2023
OSUR	8,976	$70	12/31/2023
Canandaigua National Bank & Trust Co.	11,230	$69	03/31/2024
OSUR	11,230	$69	03/31/2024
Wedmont Private Capital	10,821	$64	03/31/2024
OSUR	10,821	$64	03/31/2024
Citadel Advisors LLC		$62	12/31/2023
OSUR	13,338	$109	12/31/2023
Put	10,800	$89	12/31/2023
Call	5,100	$42	12/31/2023
Ameritas Investment Partners Inc.	7,452	$61	12/31/2023
OSUR	7,452	$61	12/31/2023
Vestcor Inc	5,471	$45	12/31/2023
OSUR	5,471	$45	12/31/2023
Advisor Group Holdings Inc.	4,910	$40	12/31/2023
OSUR	4,910	$40	12/31/2023
AJOVista LLC	4,811	$39	12/31/2023
OSUR	4,811	$39	12/31/2023
Metropolitan Life Insurance Co NY	4,008	$33	12/31/2023
OSUR	4,008	$33	12/31/2023
DekaBank Deutsche Girozentrale	4,875	$30	03/31/2024
OSUR	4,875	$30	03/31/2024
CWM LLC	3,586	$22	03/31/2024
OSUR	3,586	$22	03/31/2024
Ancora Advisors LLC	2,500	$20	12/31/2023
OSUR	2,500	$20	12/31/2023
Nemes Rush Group LLC	2,000	$16	12/31/2023
OSUR	2,000	$16	12/31/2023
Valley National Advisers Inc.	2,388	$14	03/31/2024
OSUR	2,388	$14	03/31/2024
Versant Capital Management Inc	2,077	$13	03/31/2024
OSUR	2,077	$13	03/31/2024
Hazlett Burt & Watson Inc.	1,500	$12	12/31/2023
OSUR	1,500	$12	12/31/2023
CGC Financial Services LLC	1,839	$11	03/31/2024
OSUR	1,839	$11	03/31/2024
Highlander Capital Management LLC	1,250	$10	12/31/2023
OSUR	1,250	$10	12/31/2023
Quadrant Capital Group LLC	1,220	$10	12/31/2023
OSUR	1,220	$10	12/31/2023
National Bank of Canada FI	1,000	$8	12/31/2023
OSUR	1,000	$8	12/31/2023
Fortitude Family Office LLC	977	$6	03/31/2024
OSUR	977	$6	03/31/2024
Prestige Wealth Management Group LLC	742	$6	12/31/2023
OSUR	742	$6	12/31/2023
Private Wealth Management Group LLC	729	$6	12/31/2023
OSUR	729	$6	12/31/2023
Parallel Advisors LLC	506	$4	12/31/2023
OSUR	506	$4	12/31/2023
Tidemark LLC	500	$4	12/31/2023
OSUR	500	$4	12/31/2023
GAMMA Investing LLC	536	$3	03/31/2024
OSUR	536	$3	03/31/2024
US Bancorp DE	394	$3	12/31/2023
OSUR	394	$3	12/31/2023
Geneos Wealth Management Inc.	400	$3	12/31/2023
OSUR	400	$3	12/31/2023
Global Retirement Partners LLC	337	$2	03/31/2024
OSUR	337	$2	03/31/2024
Advisory Services Network LLC	200	$2	12/31/2023
OSUR	200	$2	12/31/2023
Ronald Blue Trust Inc.	253	$2	12/31/2023
OSUR	253	$2	12/31/2023
Clearstead Advisors LLC	80	$1	12/31/2023
OSUR	80	$1	12/31/2023
Plante Moran Financial Advisors LLC	150	$1	12/31/2023
OSUR	150	$1	12/31/2023
Parkside Financial Bank & Trust	73	$1	12/31/2023
OSUR	73	$1	12/31/2023
Allworth Financial LP	180	$1	12/31/2023
OSUR	180	$1	12/31/2023
Riggs Asset Managment Co. Inc.	150	$1	12/31/2023
OSUR	150	$1	12/31/2023
Bogart Wealth LLC	150	$1	12/31/2023
OSUR	150	$1	12/31/2023
HighMark Wealth Management LLC	100	$1	12/31/2023
OSUR	100	$1	12/31/2023
Farther Finance Advisors LLC	87	$1	12/31/2023
OSUR	87	$1	12/31/2023
Pineridge Advisors LLC	131	$1	12/31/2023
OSUR	131	$1	12/31/2023
Farmers & Merchants Investments Inc.	47	$0	03/31/2024
OSUR	47	$0	03/31/2024
Proequities Inc.		$0	12/31/2023
Put	0	$0	12/31/2023
Call	0	$0	12/31/2023
OSUR	0	$0	12/31/2023
Nisa Investment Advisors LLC	36	$0	12/31/2023
OSUR	36	$0	12/31/2023
Signaturefd LLC	27	$0	12/31/2023
OSUR	27	$0	12/31/2023
Financial Gravity Asset Management Inc.	6	$0	12/31/2023
OSUR	6	$0	12/31/2023
Lindbrook Capital LLC	54	$0	12/31/2023
OSUR	54	$0	12/31/2023
Simplex Trading LLC	2,750	$-76	12/31/2023
Put	14,700	$120	12/31/2023
Call	2,700	$22	12/31/2023
OSUR	2,750	$22	12/31/2023

See Summary: Institutional Holders of OSUR
See Details: Top 10 Hedge Funds Holding OSUR
Also See: OSUR Insider Buying
Also See: OSUR Holdings Changes

OSUR — Current Quote

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OSUR — Performance