Osi Systems OSIS Institutional Ownership

NASDAQ OSIS

$198.51 +1.58 (+0.80%)

As of: Oct 22, 2026 · 2:19 PM EDT

Institutions by Trading Activity

366 Institutions

Increased 191 52.2%

Unchanged 41 11.2%

Reduced 134 36.6%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

—

13F totals exceed reported shares outstanding

Shares Held by Institutions

18.93Mn

of 16.58Mn outstanding

▲+0.68% QoQ

Shares Outstanding

16.58Mn

Institutional Investors

366

filed 13F for Jun 2026

■0 vs prior quarter

Net Shares Added (QoQ)

+127.34K

accumulated since last quarter

Value of Holdings

$3.73Bn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Updated Oct 11, 2026

Osi Systems Inc (NASDAQ:OSIS) was reported as a holding by 366 institutional investors in 13F filings for the quarter ended June 30, 2026.

Total shares held in Osi Systems rose 0.68% from Q1 2026, while the number of holders rose 8.61% from Q2 2025.
Of the 366 holders of OSIS in Q2 2026, 191 added to their positions, 134 reduced their stakes and 41 left their positions unchanged.
In total, institutional investors held 18.93Mn shares of Osi Systems at the end of Q2 2026, up 127.34K from the prior quarter and up 523.73K from a year earlier.
As of June 30, 2026, BlackRock, Inc. held the largest stake in Osi Systems with 2.55Mn shares.
Holders that added the most shares of Osi Systems in Q2 2026 were Millennium Management LLC (+254.87K shares), William Blair Investment Management, LLC (+207.68K shares), American Century Companies Inc (+172.15K shares), Channing Capital Management, LLC (+165.97K shares) and Voya Investment Management LLC (+116.1K shares).
Holders that trimmed the most shares of Osi Systems in Q2 2026 while keeping a position were FMR LLC (-228.92K shares), Loomis Sayles & Co L.P. (-168.69K shares), Bank of America Corp (-129.03K shares), Invesco Ltd. (-110.07K shares) and Clark Capital Management Group, Inc. (-51.51K shares).
Osi Systems' 10 largest institutional shareholders as of Q2 2026 were BlackRock, Inc. (2.55Mn shares), FMR LLC (1.74Mn shares), Vanguard Portfolio Management LLC (1.27Mn shares), Jupiter Topco LLC (905.92K shares), Vanguard Capital Management LLC (703.07K shares), State Street Corp (674.05K shares), Capital International Investors (596.33K shares), Geode Capital Management, LLC (463.79K shares), UBS Asset Management Americas (452.55K shares) and Channing Capital Management, LLC (432.85K shares), per Business Quant data.

Form 13F Holdings

367 Institutional Holders

Report period 30 Jun, 2026

Total shares held 18.93Mn

Of outstanding —

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	BlackRock, Inc.	0002012383	2,552,027	15.39%	▲22,404	+0.89%	$558.13Mn
2	FMR LLC	0000315066	1,738,166	10.48%	▼228,922	-11.64%	$380.14Mn
3	VANGUARD PORTFOLIO MANAGEMENT LLC	0002100121	1,272,016	7.67%	▲22,268	+1.78%	$278.19Mn
4	Jupiter Topco LLC	0002146052	905,925	5.46%	▲905,925	0.00%	$198.13Mn
5	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	703,070	4.24%	▲3,817	+0.55%	$153.76Mn
6	State Street Corp	0000093751	674,053	4.06%	▲11,912	+1.80%	$147.42Mn
7	Capital International Investors	0001562230	596,331	3.60%	▼23,148	-3.74%	$130.42Mn
8	GEODE CAPITAL MANAGEMENT, LLC	0001214717	463,787	2.80%	▲23,064	+5.23%	$101.45Mn
9	UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC	0000861177	452,547	2.73%	▲21,986	+5.11%	$98.97Mn
10	Channing Capital Management, LLC	0001302404	432,851	2.61%	▲165,967	+62.19%	$94.66Mn
11	Hood River Capital Management LLC	0001578177	414,304	2.50%	▲42,230	+11.35%	$90.61Mn
12	DIMENSIONAL FUND ADVISORS LP	0000354204	414,034	2.50%	▲18,606	+4.71%	$90.54Mn
13	WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC	0001644956	379,351	2.29%	▲207,684	+120.98%	$82.96Mn
14	Neuberger Berman Group LLC	0001465109	324,715	1.96%	▲20,792	+6.84%	$70.86Mn
15	PRICE T ROWE ASSOCIATES INC /MD/	0000080255	314,717	1.90%	▲55,172	+21.26%	$68.83K
16	MILLENNIUM MANAGEMENT LLC	0001273087	298,480	1.80%	▲254,870	+584.43%	$65.28Mn
17	Invesco Ltd.	0000914208	263,207	1.59%	▼110,067	-29.49%	$57.56Mn
18	PRIMECAP MANAGEMENT CO/CA/	0000763212	258,180	1.56%	▲13,520	+5.53%	$56.46Mn
19	AMERICAN CENTURY COMPANIES INC	0000748054	223,142	1.35%	▲172,148	+337.58%	$48.80Mn
20	NEUMEIER POMA INVESTMENT COUNSEL LLC	0001044936	222,515	1.34%	▲31,085	+16.24%	$48.66Mn

Showing 1 to 20 of 367 holders