OSI Systems (OSIS) Institutional Ownership

$204.29 +3.04 (+1.51%)

Closing price 09/11/2026 04:00 PM Eastern

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$204.38 +0.09 (+0.04%)

As of 09/11/2026 07:30 PM Eastern

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Current Institutional Ownership Percentage: 89.21%
Number of Institutional Buyers (last 12 months): 198
Total Institutional Inflows (last 12 months): $1.75B

Number of Institutional Sellers (last 12 months): 130
Total Institutional Outflows (last 12 months): $1.75B

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OSIS Institutional Buying and Selling by Quarter

OSI Systems Major Shareholders & Ownership History

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Reporting Date	Major Shareholder Name	Shares Held	Market Value	% of Portfolio	Quarterly Change in Shares	Ownership in Company
9/9/2026	Sequoia Financial Advisors LLC	1,186	$259K	0.0%	-7.1%	0.007%
9/9/2026	Tidal Investments LLC	8,316	$1.82M	0.0%	+504.8%	0.052%
9/9/2026	WINTON GROUP Ltd	7,382	$1.61M	0.1%	+541.4%	0.046%
9/9/2026	Engineers Gate Manager LP	4,143	$906K	0.0%	N/A	0.026%
9/9/2026	Integrated Wealth Concepts LLC	487	$107K	0.0%	N/A	0.003%
9/8/2026	Arizona State Retirement System	4,318	$944K	0.0%	-2.5%	0.027%
9/8/2026	Waverly Advisors LLC	11,937	$2.61M	0.0%	-3.0%	0.075%
9/8/2026	Nykredit A S	666	$146K	0.0%	N/A	0.004%
8/26/2026	Amundi	2,532	$554K	0.0%	-21.9%	0.016%
8/26/2026	HighTower Advisors LLC	2,601	$569K	0.0%	-5.4%	0.016%
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8/25/2026	VIRGINIA RETIREMENT SYSTEMS ET Al	2,160	$472K	0.0%	N/A	0.013%
8/24/2026	California State Teachers Retirement System	3,968,093	$867.82M	0.0%	+21,153.8%	24.078%
8/22/2026	Concurrent Investment Advisors LLC	4,546	$994K	0.0%	-4.7%	0.028%
8/21/2026	Nykredit A S	666	$146K	0.0%	N/A	0.004%
8/20/2026	Susquehanna Fundamental Investments LLC	19,422	$4.25M	0.1%	+707.9%	0.118%
8/20/2026	Two Sigma Securities LLC	3,099	$678K	0.1%	+145.2%	0.019%
8/20/2026	Benjamin Edwards Inc.	4,880	$1.07M	0.0%	+20.3%	0.030%
8/20/2026	Wedbush Securities Inc.	1,066	$233K	0.0%	+10.9%	0.006%
8/19/2026	UBS AM a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC	452,547	$98.97M	0.0%	+5.1%	2.746%
8/19/2026	Van ECK Associates Corp	199,636	$43.66M	0.0%	+6.1%	1.211%
8/19/2026	Hsbc Holdings PLC	2,390	$521K	0.0%	-5.9%	0.014%
8/19/2026	Wellington Management Group LLP	177,616	$38.85M	0.0%	+89.4%	1.078%
8/18/2026	Livforsakringsbolaget Skandia Omsesidigt	12,900	$2.82M	0.1%	N/A	0.078%
8/18/2026	Empowered Funds LLC	8,010	$1.75M	0.0%	N/A	0.049%
8/18/2026	Equitable Holdings Inc.	5,119	$1.12M	0.0%	N/A	0.031%
8/18/2026	Public Employees Retirement System of Ohio	160	$35K	0.0%	N/A	0.001%
8/17/2026	Pure Financial Advisors LLC	2,000	$437K	0.0%	N/A	0.012%
8/17/2026	Transamerica Financial Advisors LLC	117	$26K	0.0%	N/A	0.001%
8/17/2026	Bank of America Corp DE	137,340	$30.04M	0.0%	N/A	0.833%
8/15/2026	Freestone Grove Partners LP	301	$66K	0.0%	N/A	0.002%
8/15/2026	Jupiter Topco LLC	905,925	$198.13M	0.1%	N/A	5.497%
8/14/2026	Hsbc Holdings PLC	2,390	$521K	0.0%	N/A	0.015%
8/14/2026	Primecap Management Co. CA	258,180	$56.46M	0.0%	N/A	1.567%
8/14/2026	PDT Partners LLC	34,904	$7.63M	0.4%	N/A	0.212%
8/14/2026	Manatuck Hill Partners LLC	33,300	$7.28M	2.4%	N/A	0.202%
8/14/2026	Legal & General Group Plc	37,031	$8.10M	0.0%	N/A	0.225%
8/14/2026	The Manufacturers Life Insurance Company	8,153	$1.78M	0.0%	N/A	0.049%
8/13/2026	Sanctuary Advisors LLC	1,416	$310K	0.0%	N/A	0.009%
8/13/2026	Neumeier Poma Investment Counsel LLC	222,515	$48.66M	0.0%	N/A	1.350%
8/13/2026	PEAK6 LLC	3,307	$723K	0.0%	N/A	0.020%
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8/12/2026	Daiichi Life Insurance Co. Ltd.	21,398	$4.68M	0.1%	N/A	0.130%
8/12/2026	Northwestern Mutual Wealth Management Co.	1,328	$290K	0.0%	N/A	0.008%
8/12/2026	Quantbot Technologies LP	2,070	$453K	0.0%	N/A	0.013%
8/12/2026	William Blair Investment Management LLC	379,351	$82.96M	0.2%	N/A	2.302%
8/11/2026	Keating Financial Advisory Services Inc.	180	$39K	0.0%	N/A	0.001%
8/11/2026	Pasadena Private Wealth LLC	4,829	$1.06M	0.1%	N/A	0.029%
8/7/2026	Deutsche Bank AG	21,267	$4.65M	0.0%	N/A	0.129%
8/6/2026	Global Retirement Partners LLC	1,498	$328K	0.0%	N/A	0.009%
8/6/2026	State of Wyoming	1,116	$244K	0.0%	N/A	0.007%
7/10/2026	Wedge Capital Management L L P NC	13,052	$2.85M	0.0%	+7.9%	0.079%
7/10/2026	Handelsbanken Fonder AB	6,365	$1.39M	0.0%	+33.6%	0.039%
7/10/2026	Fulton Bank N.A.	1,866	$408K	0.0%	N/A	0.011%
7/9/2026	Oliver Luxxe Assets LLC	7,088	$1.55M	0.2%	-56.2%	0.043%
7/8/2026	Assenagon Asset Management S.A.	2,845	$622K	0.0%	-81.7%	0.017%
7/7/2026	GAMMA Investing LLC	242	$53K	0.0%	-30.7%	0.001%
7/7/2026	Harbor Investment Advisory LLC	311	$68K	0.0%	N/A	0.002%
5/29/2026	Prospect Capital Advisors LLC	49,485	$13.14M	7.2%	-4.8%	0.300%
5/26/2026	Glenmede Trust Co. NA	3,350	$889K	0.0%	+8.1%	0.020%
5/22/2026	Segall Bryant & Hamill LLC	47,909	$12.72M	0.2%	N/A	0.291%
5/21/2026	Argent Capital Management LLC	19,877	$5.28M	0.2%	N/A	0.121%
5/21/2026	BankChampaign National Association	923	$245K	0.2%	N/A	0.006%
5/20/2026	Liontrust Investment Partners LLP	977	$259K	0.0%	-23.9%	0.006%
5/19/2026	Bank of America Corp DE	266,375	$70.73M	0.0%	-8.5%	1.616%
5/19/2026	Janus Henderson Group PLC	772,314	$205.06M	0.1%	+2.6%	4.686%
5/18/2026	Amundi	3,241	$861K	0.0%	+19.6%	0.020%
5/18/2026	EverSource Wealth Advisors LLC	1,605	$426K	0.0%	+8.8%	0.010%
5/18/2026	California State Teachers Retirement System	18,670	$4.96M	0.0%	+24.4%	0.113%
5/18/2026	Royal Bank of Canada	13,209	$3.51M	0.0%	-5.1%	0.080%
5/18/2026	Empowered Funds LLC	7,922	$2.10M	0.0%	N/A	0.048%
5/16/2026	The Manufacturers Life Insurance Company	7,338	$1.95M	0.0%	-6.5%	0.045%
5/16/2026	Quantinno Capital Management LP	2,609	$693K	0.0%	+9.9%	0.016%
5/15/2026	Gateway Wealth Partners LLC	1,760	$467K	0.0%	N/A	0.011%
5/15/2026	Themes Management Co LLC	773	$205K	0.1%	N/A	0.005%
5/15/2026	Lombard Odier Asset Management USA Corp	3,603	$957K	0.1%	-58.9%	0.022%
5/15/2026	Waverly Advisors LLC	12,302	$3.27M	0.0%	+1,283.8%	0.075%
5/14/2026	Healthcare of Ontario Pension Plan Trust Fund	13,264	$3.52M	0.0%	+142.1%	0.080%
5/14/2026	Dai ichi Life Insurance Company Ltd	34,195	$9.08M	0.3%	+47.4%	0.207%
5/14/2026	Inceptionr LLC	2,193	$582K	0.1%	-16.0%	0.013%
5/14/2026	Systematic Financial Management LP	219,241	$58.21M	1.3%	-6.0%	1.330%
5/14/2026	Sei Investments Co.	18,316	$4.86M	0.0%	-6.2%	0.111%
5/14/2026	Group One Trading LLC	100	$27K	0.0%	N/A	0.001%
5/14/2026	State of Wyoming	889	$236K	0.0%	-7.2%	0.005%
5/13/2026	Cetera Investment Advisers	12,263	$3.26M	0.0%	+0.7%	0.074%
5/13/2026	First Trust Advisors LP	39,612	$10.52M	0.0%	-30.9%	0.240%
5/7/2026	Dimensional Fund Advisors LP	395,428	$104.99M	0.0%	-2.8%	2.400%
5/7/2026	Swiss National Bank	31,900	$8.47M	0.0%	+1.3%	0.194%
5/7/2026	Hanseatic Management Services Inc.	2,968	$788K	0.8%	N/A	0.018%
5/6/2026	Assetmark Inc.	933	$248K	0.0%	+25.9%	0.006%
5/6/2026	SteelPeak Wealth LLC	2,891	$768K	0.0%	N/A	0.018%
5/6/2026	Allspring Global Investments Holdings LLC	8,626	$2.27M	0.0%	-52.7%	0.052%
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5/5/2026	Illinois Municipal Retirement Fund	8,295	$2.20M	0.0%	-6.2%	0.050%
5/5/2026	Livforsakringsbolaget Skandia Omsesidigt	12,900	$3.42M	0.1%	+10.3%	0.078%
5/5/2026	Sanctuary Advisors LLC	1,059	$281K	0.0%	N/A	0.006%
5/5/2026	Maryland State Retirement & Pension System	2,254	$598K	0.0%	-4.0%	0.014%
5/4/2026	Empirical Financial Services LLC d.b.a. Empirical Wealth Management	1,697	$451K	0.0%	+24.7%	0.010%
5/4/2026	Principal Financial Group Inc.	102,417	$27.19M	0.0%	+6.9%	0.622%
5/1/2026	Commonwealth of Pennsylvania Public School Empls Retrmt SYS	3,829	$1.02M	0.0%	-3.1%	0.023%
5/1/2026	Fifth Third Bancorp	6,139	$1.63M	0.0%	+4,850.8%	0.037%
5/1/2026	Sequoia Financial Advisors LLC	1,276	$339K	0.0%	-16.2%	0.008%
4/30/2026	Hsbc Holdings PLC	2,539	$677K	0.0%	+12.5%	0.015%

OSIS Institutional Ownership - Frequently Asked Questions

During the previous two years, 373 institutional investors and hedge funds held shares of OSI Systems. The most heavily invested institutionals were California State Teachers Retirement System ($867.82M), Vanguard Group Inc. ($537.31M), Janus Henderson Group PLC ($205.06M), Mawer Investment Management Ltd. ($204.97M), Jupiter Topco LLC ($198.13M), State Street Corp ($149.83M), and FMR LLC ($141.97M).Learn more on OSI Systems' institutional investors.

89.21% of OSI Systems' stock is owned by institutional investors. Learn more on OSIS's institutional investor holdings.

Of the 317 institutional investors that purchased OSI Systems' stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: California State Teachers Retirement System ($3.95M), Jupiter Topco LLC ($905.93K), Mawer Investment Management Ltd. ($856.38K), FMR LLC ($835.00K), Capital International Investors ($580.89K), William Blair Investment Management LLC ($570.68K), and UBS AM a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC ($563.87K).

Institutional investors have bought a total of 7,774,113 shares in the last 24 months. This purchase volume represents approximately $1.75B in transactions.

Of the 130 institutional investors that sold OSI Systems' stock in the last 24 months, the following investors and hedge funds have sold the highest volume of shares: Franklin Resources Inc. ($5.46M), Janus Henderson Group PLC ($247.72K), Millennium Management LLC ($180.78K), UBS AM A Distinct Business Unit of UBS Asset Management Americas LLC ($77.50K), Clearbridge Investments LLC ($59.50K), Brown Advisory Inc. ($58.70K), and Dimensional Fund Advisors LP ($53.98K).

Institutional investors have sold a total of 6,885,217 shares in the last 24 months. This volume of shares sold represents approximately $1.75B in transactions.

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Institutional ownership data for NASDAQ:OSIS is compiled from quarterly 13F filings submitted to the U.S. Securities and Exchange Commission (SEC), with the most recent received on 9/9/2026. New 13F filings are added each quarter as they're published.

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OSI Systems (OSIS) Institutional Ownership

OSIS Institutional Buying and Selling by Quarter

OSI Systems Major Shareholders & Ownership History

OSIS Institutional Ownership - Frequently Asked Questions

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OSI Systems (OSIS) Institutional Ownership

Institutional Ownership Changes (13F Filings) for OSI Systems (NASDAQ:OSIS)

OSIS Institutional Buying and Selling by Quarter

OSI Systems Major Shareholders & Ownership History

OSIS Institutional Ownership - Frequently Asked Questions

Who are the largest shareholders of OSIS shares?

What percentage of OSI Systems' stock is owned by institutional investors?

Which institutional investors have been buying OSI Systems' stock?

How much institutional buying is happening at OSI Systems?

Which of OSI Systems' major shareholders have been selling company stock?

How much institutional selling is happening at OSI Systems?

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