Osi Systems OSIS Institutional Ownership

NASDAQ OSIS

$196.62 +2.25 (+1.16%)

At close: Oct 1, 2026 · 4:00 PM EDT

Institutions by Trading Activity

368 Institutions

Increased 192 52.2%

Unchanged 42 11.4%

Reduced 134 36.4%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

115.33%

▲+1.15 pp QoQ

Shares Held by Institutions

19.13Mn

of 16.58Mn outstanding

▲+12.69% QoQ

Shares Outstanding

16.58Mn

-2.54Mn held outside 13F filers

Institutional Investors

368

filed 13F for Jun 2026

■0 vs prior quarter

Net Shares Added (QoQ)

+2.15Mn

accumulated since last quarter

Value of Holdings

$3.72Bn

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

Quarter ending 30 Jun, 2026

Osi Systems Inc (NASDAQ:OSIS) showed up in the 13F filings of 367 institutional investors as of June 2026.

Collectively, these holders controlled 115.3% of Osi Systems's outstanding shares in June 2026, up from 114.2% in March 2026.
They increased total shares held in Osi Systems by 12.69% from last quarter, and the number of investors in OSIS increased 8.26% annually.
During the quarter, 191 of these 367 funds increased positions in OSIS, 134 reduced exposure, and 42 held steady.
Altogether, these fund groups held 19.13Mn shares in OSIS by June 2026, up by 2.15Mn shares quarter on quarter, and up 716.53K shares year over year.
As of June 30, 2026, BlackRock, Inc. held the largest stake in Osi Systems with 2.55Mn shares, accounting for 15.39% of total shares outstanding.
Leading buyers of Osi Systems shares for the quarter ending June 2026 were Jupiter Topco LLC (905.92K), MILLENNIUM MANAGEMENT LLC (254.87K), WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC (207.68K), Sixth Street Partners Management Company, L.P. (193.8K), AMERICAN CENTURY COMPANIES INC (172.15K).
The largest sales of OSIS for the quarter ending June 2026 came from FMR LLC (228.92K), LOOMIS SAYLES & CO L P (168.69K), Bank Of America Corp /De/ (129.04K), Invesco Ltd. (110.07K), Clark Capital Management Group, Inc. (51.51K).
Business Quant data shows the 10 biggest positions in Osi Systems as of June 2026 are held by BlackRock, Inc. (2.55Mn), FMR LLC (1.74Mn), VANGUARD PORTFOLIO MANAGEMENT LLC (1.27Mn), Jupiter Topco LLC (905.92K), VANGUARD CAPITAL MANAGEMENT LLC (703.07K), State Street Corp (674.05K), Capital International Investors (596.33K), GEODE CAPITAL MANAGEMENT, LLC (463.79K), UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC (452.55K), Channing Capital Management, LLC (432.85K).

Form 13F Holdings

366 Institutional Holders

Report period 30 Jun, 2026

Total shares held 19.13Mn

Of outstanding 115.33%

#	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 366 holders