On this page, we present all of the funds holding OSIS from our database of 13F filers, detailed in the table below. The first column indicates the name of each of the funds holding OSIS, with a link to that fund's top holdings. The next columns indicate the amount of OSIS stock held by each of the funds holding OSIS, followed by the OSIS position size held by the fund, and lastly the date of the quarterly filing period the data represents. In total, we count 188 funds holding OSIS 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 OSIS), click the fund name in the "Holder" column of the funds-holding-OSIS table below.

Holder	Amount	Position Size ($ in 1000's)	As of
BlackRock Inc.	3,293,587	$261,906	12/31/2022
OSIS	3,293,587	$261,906	12/31/2022
Vanguard Group Inc.	1,862,540	$148,109	12/31/2022
OSIS	1,862,540	$148,109	12/31/2022
Janus Henderson Group PLC	1,832,332	$145,707	12/31/2022
OSIS	1,832,332	$145,707	12/31/2022
Dimensional Fund Advisors LP	793,202	$63,076	12/31/2022
OSIS	793,202	$63,076	12/31/2022
State Street Corp	659,499	$52,443	12/31/2022
OSIS	659,499	$52,443	12/31/2022
Credit Suisse AG	508,969	$40,473	12/31/2022
OSIS	508,969	$40,473	12/31/2022
Clearbridge Investments LLC	384,280	$30,558	12/31/2022
OSIS	384,280	$30,558	12/31/2022
JPMorgan Chase & Co.	354,427	$28,184	12/31/2022
OSIS	354,427	$28,184	12/31/2022
Neumeier Poma Investment Counsel LLC	325,865	$25,913	12/31/2022
OSIS	325,865	$25,913	12/31/2022
Geode Capital Management LLC	306,830	$24,399	12/31/2022
OSIS	306,830	$24,399	12/31/2022
Neuberger Berman Group LLC	305,885	$24,339	12/31/2022
OSIS	305,885	$24,339	12/31/2022
Primecap Management Co. CA	293,310	$23,324	12/31/2022
OSIS	293,310	$23,324	12/31/2022
Invesco Ltd.	223,264	$17,754	12/31/2022
OSIS	223,264	$17,754	12/31/2022
Cardinal Capital Management LLC CT	214,331	$17,044	12/31/2022
OSIS	214,331	$17,044	12/31/2022
Ameriprise Financial Inc.	209,917	$16,693	12/31/2022
OSIS	209,917	$16,693	12/31/2022
Charles Schwab Investment Management Inc.	197,716	$15,722	12/31/2022
OSIS	197,716	$15,722	12/31/2022
Northern Trust Corp	177,439	$14,110	12/31/2022
OSIS	177,439	$14,110	12/31/2022
Norges Bank	176,613	$14,044	12/31/2022
OSIS	176,613	$14,044	12/31/2022
Boston Partners	168,377	$13,959	12/31/2022
OSIS	168,377	$13,959	12/31/2022
Systematic Financial Management LP	169,089	$13,446	12/31/2022
OSIS	169,089	$13,446	12/31/2022
Morgan Stanley	154,666	$12,299	12/31/2022
OSIS	154,666	$12,299	12/31/2022
Bank of New York Mellon Corp	152,634	$12,137	12/31/2022
OSIS	152,634	$12,137	12/31/2022
LSV Asset Management	142,602	$11,340	12/31/2022
OSIS	142,602	$11,340	12/31/2022
Nuveen Asset Management LLC	140,936	$11,207	12/31/2022
OSIS	140,936	$11,207	12/31/2022
Prospect Capital Advisors LLC	135,420	$10,769	12/31/2022
OSIS	135,420	$10,769	12/31/2022
UBS Group AG	105,618	$8,399	12/31/2022
OSIS	105,618	$8,399	12/31/2022
Principal Financial Group Inc.	98,967	$7,870	12/31/2022
OSIS	98,967	$7,870	12/31/2022
Granahan Investment Management Inc. MA	97,426	$7,747	12/31/2022
OSIS	97,426	$7,747	12/31/2022
Wedge Capital Management L L P NC	82,567	$6,566	12/31/2022
OSIS	82,567	$6,566	12/31/2022
Millennium Management LLC	81,726	$6,499	12/31/2022
OSIS	81,726	$6,499	12/31/2022
Citadel Advisors LLC		$5,751	12/31/2022
OSIS	65,622	$5,218	12/31/2022
Call	14,400	$1,145	12/31/2022
Put	7,700	$612	12/31/2022
Nordea Investment Management AB	66,284	$5,275	12/31/2022
OSIS	66,284	$5,275	12/31/2022
Asset Management One Co. Ltd.	64,333	$5,164	12/31/2022
OSIS	64,333	$5,164	12/31/2022
Goldman Sachs Group Inc.	61,366	$4,880	12/31/2022
OSIS	61,366	$4,880	12/31/2022
Alliancebernstein L.P.	60,642	$4,822	12/31/2022
OSIS	60,642	$4,822	12/31/2022
Lord Abbett & CO. LLC	58,796	$4,675	12/31/2022
OSIS	58,796	$4,675	12/31/2022
Rhumbline Advisers	50,613	$4,025	12/31/2022
OSIS	50,613	$4,025	12/31/2022
Legal & General Group Plc	46,797	$3,721	12/31/2022
OSIS	46,797	$3,721	12/31/2022
Comerica Bank	35,031	$3,113	12/31/2022
OSIS	35,031	$3,113	12/31/2022
Swiss National Bank	38,800	$3,085	12/31/2022
OSIS	38,800	$3,085	12/31/2022
First Trust Advisors LP	35,185	$2,798	12/31/2022
OSIS	35,185	$2,798	12/31/2022
Bank of America Corp DE	33,252	$2,644	12/31/2022
OSIS	33,252	$2,644	12/31/2022
Allspring Global Investments Holdings LLC	32,132	$2,555	12/31/2022
OSIS	32,132	$2,555	12/31/2022
Kennedy Capital Management Inc.	29,445	$2,341	12/31/2022
OSIS	29,445	$2,341	12/31/2022
Public Sector Pension Investment Board	28,518	$2,268	12/31/2022
OSIS	28,518	$2,268	12/31/2022
AQR Capital Management LLC	28,185	$2,241	12/31/2022
OSIS	28,185	$2,241	12/31/2022
WINTON GROUP Ltd	27,203	$2,163	12/31/2022
OSIS	27,203	$2,163	12/31/2022
Walthausen & Co. LLC	24,649	$2,106	09/30/2022
OSIS	24,649	$2,106	09/30/2022
Oppenheimer & Co. Inc.	26,300	$2,091	12/31/2022
OSIS	26,300	$2,091	12/31/2022
Summit Global Investments	24,511	$1,949	12/31/2022
OSIS	24,511	$1,949	12/31/2022
Renaissance Technologies LLC	22,600	$1,797	12/31/2022
OSIS	22,600	$1,797	12/31/2022
California State Teachers Retirement System	20,375	$1,620	12/31/2022
OSIS	20,375	$1,620	12/31/2022
Acadian Asset Management LLC	20,056	$1,594	12/31/2022
OSIS	20,056	$1,594	12/31/2022
UBS Asset Management Americas Inc.	19,774	$1,572	12/31/2022
OSIS	19,774	$1,572	12/31/2022
Voloridge Investment Management LLC	19,027	$1,513	12/31/2022
OSIS	19,027	$1,513	12/31/2022
Barclays PLC	18,947	$1,507	12/31/2022
OSIS	18,947	$1,507	12/31/2022
Assenagon Asset Management S.A.	18,709	$1,488	12/31/2022
OSIS	18,709	$1,488	12/31/2022
Bridge City Capital LLC	18,561	$1,476	12/31/2022
OSIS	18,561	$1,476	12/31/2022
New York State Common Retirement Fund	18,420	$1,465	12/31/2022
OSIS	18,420	$1,465	12/31/2022
Qube Research & Technologies Ltd	17,424	$1,386	12/31/2022
OSIS	17,424	$1,386	12/31/2022
Martingale Asset Management L P	17,050	$1,356	12/31/2022
OSIS	17,050	$1,356	12/31/2022
Commonwealth of Pennsylvania Public School Empls Retrmt SYS	16,776	$1,334	12/31/2022
OSIS	16,776	$1,334	12/31/2022
Thrivent Financial for Lutherans	16,079	$1,279	12/31/2022
OSIS	16,079	$1,279	12/31/2022
Great West Life Assurance Co. Can	15,929	$1,266	12/31/2022
OSIS	15,929	$1,266	12/31/2022
Prudential Financial Inc.	15,886	$1,263	12/31/2022
OSIS	15,886	$1,263	12/31/2022
Keeley Teton Advisors LLC	15,416	$1,226	12/31/2022
OSIS	15,416	$1,226	12/31/2022
Susquehanna International Group LLP		$1,168	12/31/2022
Call	13,500	$1,074	12/31/2022
OSIS	5,887	$468	12/31/2022
Put	4,700	$374	12/31/2022
CWM LLC	14,625	$1,163	12/31/2022
OSIS	14,625	$1,163	12/31/2022
New York State Teachers Retirement System	14,514	$1,154	12/31/2022
OSIS	14,514	$1,154	12/31/2022
Victory Capital Management Inc.	14,355	$1,142	12/31/2022
OSIS	14,355	$1,142	12/31/2022
Wesbanco Bank Inc.	13,427	$1,068	12/31/2022
OSIS	13,427	$1,068	12/31/2022
Cornercap Investment Counsel Inc.	13,089	$1,041	12/31/2022
OSIS	13,089	$1,041	12/31/2022
Seizert Capital Partners LLC	12,784	$1,017	12/31/2022
OSIS	12,784	$1,017	12/31/2022
Teacher Retirement System of Texas	12,644	$1,005	12/31/2022
OSIS	12,644	$1,005	12/31/2022
Price T Rowe Associates Inc. MD	12,168	$968	12/31/2022
OSIS	12,168	$968	12/31/2022
Advisors Asset Management Inc.	12,145	$966	12/31/2022
OSIS	12,145	$966	12/31/2022
D. E. Shaw & Co. Inc.	12,008	$955	12/31/2022
OSIS	12,008	$955	12/31/2022
State of Tennessee Treasury Department	11,558	$919	12/31/2022
OSIS	11,558	$919	12/31/2022
Deutsche Bank AG	11,408	$907	12/31/2022
OSIS	11,408	$907	12/31/2022
State of Alaska Department of Revenue	10,916	$868	12/31/2022
OSIS	10,916	$868	12/31/2022
Texas Permanent School Fund	10,538	$838	12/31/2022
OSIS	10,538	$838	12/31/2022
Allianz Asset Management GmbH	10,442	$830	12/31/2022
OSIS	10,442	$830	12/31/2022
North Star Investment Management Corp.	10,152	$807	12/31/2022
OSIS	10,152	$807	12/31/2022
NorthCrest Asset Manangement LLC	10,030	$798	12/31/2022
OSIS	10,030	$798	12/31/2022
Yousif Capital Management LLC	9,969	$793	12/31/2022
OSIS	9,969	$793	12/31/2022
Citigroup Inc.	9,604	$764	12/31/2022
OSIS	9,604	$764	12/31/2022
Strs Ohio	9,300	$739	12/31/2022
OSIS	9,300	$739	12/31/2022
American International Group Inc.	8,681	$690	12/31/2022
OSIS	8,681	$690	12/31/2022
Alberta Investment Management Corp	8,445	$672	12/31/2022
OSIS	8,445	$672	12/31/2022
MetLife Investment Management LLC	8,382	$667	12/31/2022
OSIS	8,382	$667	12/31/2022
Supplemental Annuity Collective Trust of NJ	8,000	$636	12/31/2022
OSIS	8,000	$636	12/31/2022
Dynamic Technology Lab Private Ltd	7,971	$634	12/31/2022
OSIS	7,971	$634	12/31/2022
Louisiana State Employees Retirement System	7,400	$588	12/31/2022
OSIS	7,400	$588	12/31/2022
Amalgamated Bank	7,252	$577	12/31/2022
OSIS	7,252	$577	12/31/2022
Balyasny Asset Management LLC	7,145	$568	12/31/2022
OSIS	7,145	$568	12/31/2022
Raymond James & Associates	7,128	$567	12/31/2022
OSIS	7,128	$567	12/31/2022
Aquatic Capital Management LLC	7,000	$556	12/31/2022
OSIS	7,000	$556	12/31/2022
Exchange Traded Concepts LLC	6,677	$531	12/31/2022
OSIS	6,677	$531	12/31/2022
SG Americas Securities LLC	6,594	$524	12/31/2022
OSIS	6,594	$524	12/31/2022
Legato Capital Management LLC	6,571	$523	12/31/2022
OSIS	6,571	$523	12/31/2022
Maryland State Retirement & Pension System	6,453	$513	12/31/2022
OSIS	6,453	$513	12/31/2022
Jane Street Group LLC	6,332	$504	12/31/2022
OSIS	6,332	$504	12/31/2022
The Manufacturers Life Insurance Company	6,301	$501	12/31/2022
OSIS	6,301	$501	12/31/2022
Los Angeles Capital Management & Equity Research Inc.	6,261	$498	12/31/2022
OSIS	6,261	$498	12/31/2022
Voya Investment Management LLC	6,183	$492	12/31/2022
OSIS	6,183	$492	12/31/2022
Kula Investments LLC	6,157	$490	12/31/2022
OSIS	6,157	$490	12/31/2022
AXA S.A.	6,100	$485	12/31/2022
OSIS	6,100	$485	12/31/2022
Envestnet Asset Management Inc.	5,892	$469	12/31/2022
OSIS	5,892	$469	12/31/2022
Ensign Peak Advisors Inc	5,632	$448	12/31/2022
OSIS	5,632	$448	12/31/2022
HRT Financial LP	5,646	$448	12/31/2022
OSIS	5,646	$448	12/31/2022
Sei Investments Co.	5,507	$438	12/31/2022
OSIS	5,507	$438	12/31/2022
Oregon Public Employees Retirement Fund	5,216	$415	12/31/2022
OSIS	5,216	$415	12/31/2022
American Century Companies Inc.	5,163	$411	12/31/2022
OSIS	5,163	$411	12/31/2022
BNP Paribas Arbitrage SA	4,976	$396	12/31/2022
OSIS	4,976	$396	12/31/2022
Guggenheim Capital LLC	4,865	$387	12/31/2022
OSIS	4,865	$387	12/31/2022
Pasadena Private Wealth LLC	4,829	$384	12/31/2022
OSIS	4,829	$384	12/31/2022
Teachers Retirement System of The State of Kentucky	4,798	$382	12/31/2022
OSIS	4,798	$382	12/31/2022
Ergoteles LLC	4,769	$379	12/31/2022
OSIS	4,769	$379	12/31/2022
Hsbc Holdings PLC	4,628	$369	12/31/2022
OSIS	4,628	$369	12/31/2022
Arizona State Retirement System	4,534	$361	12/31/2022
OSIS	4,534	$361	12/31/2022
NJ State Employees Deferred Compensation Plan	4,500	$358	12/31/2022
OSIS	4,500	$358	12/31/2022
MQS Management LLC	4,333	$345	12/31/2022
OSIS	4,333	$345	12/31/2022
Squarepoint Ops LLC	4,294	$341	12/31/2022
OSIS	4,294	$341	12/31/2022
Janney Montgomery Scott LLC	4,226	$336	12/31/2022
OSIS	4,226	$336	12/31/2022
Acrisure Capital Management LLC	3,936	$313	12/31/2022
OSIS	3,936	$313	12/31/2022
Cubist Systematic Strategies LLC	3,710	$295	12/31/2022
OSIS	3,710	$295	12/31/2022
Handelsbanken Fonder AB	3,665	$291	12/31/2022
OSIS	3,665	$291	12/31/2022
Dupont Capital Management Corp	3,583	$285	12/31/2022
OSIS	3,583	$285	12/31/2022
Public Employees Retirement Association of Colorado	3,481	$277	12/31/2022
OSIS	3,481	$277	12/31/2022
Gotham Asset Management LLC	3,478	$277	12/31/2022
OSIS	3,478	$277	12/31/2022
Royal Bank of Canada	3,404	$271	12/31/2022
OSIS	3,404	$271	12/31/2022
Gyon Technologies Capital Management LP	3,322	$264	12/31/2022
OSIS	3,322	$264	12/31/2022
The PNC Financial Services Group Inc.	3,282	$261	12/31/2022
OSIS	3,282	$261	12/31/2022
Mutual of America Capital Management LLC	3,286	$261	12/31/2022
OSIS	3,286	$261	12/31/2022
Mercer Global Advisors Inc. ADV	3,217	$256	12/31/2022
OSIS	3,217	$256	12/31/2022
Zebra Capital Management LLC	3,137	$249	12/31/2022
OSIS	3,137	$249	12/31/2022
State Board of Administration of Florida Retirement System	3,022	$240	12/31/2022
OSIS	3,022	$240	12/31/2022
HighTower Advisors LLC	2,956	$236	12/31/2022
OSIS	2,956	$236	12/31/2022
Campbell & CO Investment Adviser LLC	2,961	$235	12/31/2022
OSIS	2,961	$235	12/31/2022
CWM Advisors LLC	2,957	$235	12/31/2022
OSIS	2,957	$235	12/31/2022
Everence Capital Management Inc.	2,550	$203	12/31/2022
OSIS	2,550	$203	12/31/2022
ProShare Advisors LLC	2,518	$200	12/31/2022
OSIS	2,518	$200	12/31/2022
Zurcher Kantonalbank Zurich Cantonalbank	2,120	$169	12/31/2022
OSIS	2,120	$169	12/31/2022
Wells Fargo & Company MN	1,731	$138	12/31/2022
OSIS	1,731	$138	12/31/2022
Amundi	1,460	$123	12/31/2022
OSIS	1,460	$123	12/31/2022
Virtus Investment Advisers Inc.	1,509	$120	12/31/2022
OSIS	1,509	$120	12/31/2022
	1,468	$117	12/31/2022
OSIS	1,468	$117	12/31/2022
KBC Group NV	1,556	$112	12/31/2022
OSIS	1,556	$112	12/31/2022
Vestcor Inc	1,385	$110	12/31/2022
OSIS	1,385	$110	12/31/2022
Ameritas Investment Partners Inc.	1,215	$108	12/31/2022
OSIS	1,215	$108	12/31/2022
FMR LLC	1,062	$84	12/31/2022
OSIS	1,062	$84	12/31/2022
Metropolitan Life Insurance Co NY	1,003	$80	12/31/2022
OSIS	1,003	$80	12/31/2022
Resources Management Corp CT ADV	990	$79	12/31/2022
OSIS	990	$79	12/31/2022
Advisor Group Holdings Inc.	794	$63	12/31/2022
OSIS	794	$63	12/31/2022
Column Capital Advisors LLC	600	$48	12/31/2022
OSIS	600	$48	12/31/2022
	530	$42	12/31/2022
OSIS	530	$42	12/31/2022
CENTRAL TRUST Co	500	$40	12/31/2022
OSIS	500	$40	12/31/2022
Clearstead Advisors LLC	500	$40	12/31/2022
OSIS	500	$40	12/31/2022
Tower Research Capital LLC TRC	503	$40	12/31/2022
OSIS	503	$40	12/31/2022
Public Employees Retirement System of Ohio	360	$29	12/31/2022
OSIS	360	$29	12/31/2022
Ronald Blue Trust Inc.	405	$29	12/31/2022
OSIS	405	$29	12/31/2022
Nisa Investment Advisors LLC	331	$26	12/31/2022
OSIS	331	$26	12/31/2022
Lindbrook Capital LLC	280	$22	12/31/2022
OSIS	280	$22	12/31/2022
US Bancorp DE	251	$20	12/31/2022
OSIS	251	$20	12/31/2022
Assetmark Inc.	250	$20	12/31/2022
OSIS	250	$20	12/31/2022
Parkside Financial Bank & Trust	241	$19	12/31/2022
OSIS	241	$19	12/31/2022
IFP Advisors Inc	205	$15	12/31/2022
OSIS	205	$15	12/31/2022
Russell Investments Group Ltd.	192	$15	12/31/2022
OSIS	192	$15	12/31/2022
Park Place Capital Corp	184	$15	12/31/2022
OSIS	184	$15	12/31/2022
Steward Partners Investment Advisory LLC	100	$8	12/31/2022
OSIS	100	$8	12/31/2022
Private Trust Co. NA	81	$6	12/31/2022
OSIS	81	$6	12/31/2022
AdvisorNet Financial Inc	79	$6	12/31/2022
OSIS	79	$6	12/31/2022
Quadrant Capital Group LLC	77	$6	12/31/2022
OSIS	77	$6	12/31/2022
Fifth Third Bancorp	52	$4	12/31/2022
OSIS	52	$4	12/31/2022
Bessemer Group Inc.	44	$4	12/31/2022
OSIS	44	$4	12/31/2022
Nelson Van Denburg & Campbell Wealth Management Group LLC	50	$4	12/31/2022
OSIS	50	$4	12/31/2022
First Manhattan Co.	34	$3	12/31/2022
OSIS	34	$3	12/31/2022
Harbour Investments Inc.	36	$3	12/31/2022
OSIS	36	$3	12/31/2022
Bell Investment Advisors Inc	34	$3	12/31/2022
OSIS	34	$3	12/31/2022
GW&K Investment Management LLC	8	$1	12/31/2022
OSIS	8	$1	12/31/2022
Farmers & Merchants Investments Inc.	12	$1	12/31/2022
OSIS	12	$1	12/31/2022
Point72 Asset Management L.P.	15	$1	12/31/2022
OSIS	15	$1	12/31/2022
GWM Advisors LLC	12	$1	12/31/2022
OSIS	12	$1	12/31/2022
Proequities Inc.		$0	12/31/2022
Put	0	$0	12/31/2022
Call	0	$0	12/31/2022
OSIS	0	$0	12/31/2022
Comerica Securities Inc.	4	$0	12/31/2022
OSIS	4	$0	12/31/2022
Glassman Wealth Services	6	$0	12/31/2022
OSIS	6	$0	12/31/2022
Rockefeller Capital Management L.P.	6	$0	12/31/2022
OSIS	6	$0	12/31/2022
	80	$0	12/31/2022
OSIS	80	$0	12/31/2022
Covestor Ltd	1	$0	12/31/2022
OSIS	1	$0	12/31/2022

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

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OSIS — Performance