OSI SYSTEMS INC

OSISNASDAQ

$196.78+0.16 (+0.08%)as of Oct 2, 2026

Legend

Insider buy

Insider sell

Congress buy

Congress sell

Hedge Funds
bought vs soldGreener markers show more buyers; redder markers show more sellers.

Company share activityNet buybacksNo changeNet dilution

Marker size reflects transaction size.

Insider buy
Insider sell
Congress buy
Congress sell
Hedge Funds bought vs sold

Share activityNet buybacksNo changeNet dilution

Marker size reflects transaction size. Greener fund markers mean more buyers.

Insider Buy
Insider Sell
Congress Buy
Congress Sell
Hedge funds bought vs sold
BuybackNo changeNet dilution

OSI SYSTEMS INC price and activity chart data

Showing the 1Y range: Oct 2, 2025 to Oct 2, 2026. Price (-20.7%). 0 insider or congressional trades plotted in this window as 0 markers; nearby trades of the same kind are grouped.

Transactions plotted on the price chart
Date	Category	Person	Role	Action	Amount	Change in holding

Largest institutional holders

13F · Q2 2026

Fund	% of company held	Value	% of portfolio	Quarterly activity
BlackRock, Inc.	16.03%	$558M	0.01%	Not reported
FMR LLC	10.92%	$380M	0.02%	Not reported
Vanguard Portfolio Management LLC	7.99%	$278M	0.01%	Not reported
Jupiter Topco LLC	5.69%	$198M	0.08%	Not reported
Vanguard Capital Management LLC	4.42%	$154M	0.00%	Not reported
State Street Corp	4.23%	$147M	0.00%	Not reported
Capital International Investors	3.75%	$130M	0.03%	Reduce 3.74%
Geode Capital Management, LLC	2.91%	$101M	0.01%	Not reported
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC	2.84%	$99M	0.02%	Not reported
Channing Capital Management, LLC	2.72%	$94.7M	2.18%	Add 62.19%
Hood River Capital Management LLC	2.60%	$90.6M	0.66%	Add 11.35%
Dimensional Fund Advisors LP	2.60%	$90.5M	0.02%	Not reported
William Blair Investment Management, LLC	2.38%	$83M	0.25%	Add 120.98%
Neuberger Berman Group LLC	2.04%	$70.9M	0.05%	Not reported
Millennium Management LLC	1.88%	$65.3M	0.02%	Not reported
Invesco Ltd.	1.65%	$57.6M	0.00%	Not reported
Primecap Management Co	1.62%	$56.5M	0.03%	Add 5.53%
American Century Companies Inc	1.40%	$48.8M	0.02%	Not reported
Neumeier Poma Investment Counsel LLC	1.40%	$48.7M	3.33%	Add 16.24%
Clark Capital Management Group, Inc.	1.38%	$47.9M	0.26%	Reduce 19.05%
Systematic Financial Management LP	1.36%	$47.3M	0.94%	Reduce 1.43%
UBS Group AG	1.32%	$46.1M	0.01%	Not reported
Van Eck Associates Corp	1.25%	$43.7M	0.03%	Add 6.09%
Morgan Stanley	1.24%	$43.3M	0.00%	Not reported
Charles Schwab Investment Management Inc	1.22%	$42.4M	0.01%	Not reported
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.	1.21%	$41.9M	0.05%	Not reported
JPMorgan Chase & Co	1.19%	$40.6M	0.00%	Not reported
Ameriprise Financial Inc	1.16%	$40.5M	0.01%	Not reported
Northern Trust Corp	1.14%	$39.7M	0.00%	Not reported
Wellington Management Group LLP	1.12%	$38.8M	0.01%	Add 89.45%
Bank of America Corp	0.86%	$30M	0.00%	Not reported
Clearbridge Investments, LLC	0.85%	$29.6M	0.02%	Not reported
Voya Investment Management LLC	0.79%	$27.4M	0.02%	Not reported
Goldman Sachs Group Inc	0.75%	$26.2M	0.00%	Not reported
Nomura Asset Management International Inc.	0.73%	$25.5M	0.04%	Reduce 27.71%
Swedbank AB	0.73%	$25.4M	0.02%	Reduce 1.35%
Vanguard Fiduciary Trust Co	0.70%	$24.4M	0.01%	Not reported
New York State Common Retirement Fund	0.68%	$23.8M	0.03%	Not reported
Oberweis Asset Management Inc/	0.67%	$23.4M	0.48%	Add 0.52%
Principal Financial Group Inc	0.66%	$23.1M	0.01%	Not reported
Envestnet Asset Management Inc	0.66%	$22.9M	0.01%	Not reported
First Eagle Investment Management, LLC	0.66%	$22.8M	0.02%	Add 323.02%
T. Rowe Price Investment Management, Inc.	0.64%	$22.2M	0.01%	New Not reported
Bank of New York Mellon Corp	0.63%	$22M	0.00%	Not reported
Brown Advisory Inc	0.55%	$19M	0.03%	Not reported
BNP Paribas Financial Markets	0.50%	$17.5M	0.01%	Not reported
Asset Management One Co., Ltd.	0.39%	$13.7M	0.04%	Reduce 24.69%
Nuveen, LLC	0.38%	$13.1M	0.00%	Not reported
Wells Fargo & Company	0.37%	$13M	0.00%	Not reported
Prospect Capital Advisors, LLC	0.36%	$12.6M	5.72%	Add 16.48%

50 of 339 holders

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