Who Owns O S I SYSTEMS INC (OSIS)? -- Institutional Holders (2026-06-30)

444 institutions reported holding $4.62B of O S I SYSTEMS INC (OSIS) in SEC 13F filings for 2026-06-30. Largest institutional holders: BlackRock, Inc. ($567.6M), VANGUARD GROUP INC ($461.8M), FMR LLC ($386.6M), Jupiter Topco LLC ($198.1M), STATE STREET CORP ($160.2M). Source: SEC Form 13F.

RankInstitutionValueSharesChange
1BlackRock, Inc.$567.6M2.6MAdded
2VANGUARD GROUP INC$461.8M2.1MAdded
3FMR LLC$386.6M1.7MTrimmed
4Jupiter Topco LLC$198.1M905,925New
5STATE STREET CORP$160.2M674,053Added
6Linden Advisors LP$152.6M0Hold
7Capital International Investors$130.4M596,331Trimmed
8GEODE CAPITAL MANAGEMENT, LLC$101.4M463,787Added
9UBS AM, A DISTINCT BUSINESS UNIT OF UBS ASSET MANAGEMENT AMERICAS LLC$99.0M452,547Added
10Channing Capital Management, LLC$94.7M432,851Added
11Hood River Capital Management LLC$90.6M414,304Added
12DIMENSIONAL FUND ADVISORS LP$90.5M414,034Added
13WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC$83.0M379,351Added
14NEUBERGER BERMAN GROUP LLC$70.9M324,715Added
15PRICE T ROWE ASSOCIATES INC /MD/$68.8M314,717Added
16MILLENNIUM MANAGEMENT LLC$65.3M298,480Added
17Invesco Ltd.$60.2M263,207Added
18UBS Group AG$58.2M210,866Added
19PRIMECAP MANAGEMENT CO/CA/$56.5M258,180Added
20Alberta Investment Management Corp$52.7M0Hold
21AMERICAN CENTURY COMPANIES INC$48.8M223,142Added
22NEUMEIER POMA INVESTMENT COUNSEL LLC$48.7M222,515Added
23Clark Capital Management Group, Inc.$47.9M218,913Trimmed
24SYSTEMATIC FINANCIAL MANAGEMENT LP$47.3M216,098Trimmed
25MORGAN STANLEY$43.7M197,990Trimmed

Source: SEC Form 13F filings · as of 2026-06-30