OSIS OSI Systems, Inc.
OSI Systems, Inc. (OSIS) Institutional Ownership
What the institutions did with OSIS last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
Sign in or subscribeLargest holders
| Manager | Shares | % of reported |
|---|---|---|
| BlackRock, Inc. | 2.6M | 13.5% |
| FMR LLC | 1.7M | 9.2% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 1.3M | 6.7% |
| Jupiter Topco LLC | 905.9K | 4.8% |
| VANGUARD CAPITAL MANAGEMENT LLC | 703.1K | 3.7% |
| STATE STREET CORP | 674.1K | 3.6% |
| Capital International Investors | 596.3K | 3.2% |
| GEODE CAPITAL MANAGEMENT, LLC | 463.8K | 2.5% |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 452.5K | 2.4% |
| Channing Capital Management, LLC | 432.9K | 2.3% |
| Hood River Capital Management LLC | 414.3K | 2.2% |
| DIMENSIONAL FUND ADVISORS LP | 414.0K | 2.2% |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | 379.4K | 2.0% |
| NEUBERGER BERMAN GROUP LLC | 324.7K | 1.7% |
| PRICE T ROWE ASSOCIATES INC /MD/ | 314.7K | 1.7% |
| MILLENNIUM MANAGEMENT LLC | 298.5K | 1.6% |
| Invesco Ltd. | 263.2K | 1.4% |
| PRIMECAP MANAGEMENT CO/CA/ | 258.2K | 1.4% |
| AMERICAN CENTURY COMPANIES INC | 223.1K | 1.2% |
| NEUMEIER POMA INVESTMENT COUNSEL LLC | 222.5K | 1.2% |
| Clark Capital Management Group, Inc. | 218.9K | 1.2% |
| SYSTEMATIC FINANCIAL MANAGEMENT LP | 216.1K | 1.1% |
| UBS Group AG | 210.9K | 1.1% |
| VAN ECK ASSOCIATES CORP | 199.6K | 1.1% |
| MORGAN STANLEY | 198.0K | 1.0% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| Mawer Investment Management Ltd. | Sold Out | 662.6K | 0 | -662.6K |
| MILLENNIUM MANAGEMENT LLC | Increased | 43.6K | 298.5K | +254.9K |
| FMR LLC | Reduced | 2.0M | 1.7M | -228.9K |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | Increased | 171.7K | 379.4K | +207.7K |
| AMERICAN CENTURY COMPANIES INC | Increased | 51.0K | 223.1K | +172.1K |
| LOOMIS SAYLES & CO L P | Reduced | 191.5K | 22.8K | -168.7K |
| Channing Capital Management, LLC | Increased | 266.9K | 432.9K | +166.0K |
| BANK OF AMERICA CORP /DE/ | Reduced | 266.4K | 137.3K | -129.0K |
| Driehaus Capital Management LLC | Sold Out | 118.0K | 0 | -118.0K |
| VOYA INVESTMENT MANAGEMENT LLC | Increased | 9.1K | 125.2K | +116.1K |
| Invesco Ltd. | Reduced | 373.3K | 263.2K | -110.1K |
| T. Rowe Price Investment Management, Inc. | New | 0 | 101.6K | +101.6K |
| AMERIPRISE FINANCIAL INC | Increased | 94.1K | 185.4K | +91.3K |
| WELLINGTON MANAGEMENT GROUP LLP | Increased | 93.8K | 177.6K | +83.9K |
| UBS Group AG | Increased | 136.0K | 210.9K | +74.9K |
| PRICE T ROWE ASSOCIATES INC /MD/ | Increased | 259.5K | 314.7K | +55.2K |
| Clark Capital Management Group, Inc. | Reduced | 270.4K | 218.9K | -51.5K |
| AXIOM INVESTORS LLC /DE | Sold Out | 45.1K | 0 | -45.1K |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | Reduced | 161.5K | 116.7K | -44.8K |
| GOLDMAN SACHS GROUP INC | Increased | 75.1K | 119.7K | +44.6K |
| LORD, ABBETT & CO. LLC | Sold Out | 43.1K | 0 | -43.1K |
| Hood River Capital Management LLC | Increased | 372.1K | 414.3K | +42.2K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | Reduced | 232.5K | 192.1K | -40.4K |
| NEW YORK STATE COMMON RETIREMENT FUND | Increased | 71.5K | 108.7K | +37.2K |
| Nicholas Investment Partners, LP | Sold Out | 31.6K | 0 | -31.6K |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.