# OSI SYSTEMS INC COM

OSI SYSTEMS INC COM is a security (CUSIP 671044105) tracked across SEC portfolio filings. 385 institutional managers reported $4.8B on Form 13F as of 2026-06-30; 32 registered fund positions totaling $392.4M via N-PORT as of 2026-05-31.

## Summary

- Issuer: OSI SYSTEMS INC
- Class: COM
- CUSIP: 671044105
- Asset category: EC
- 13F holders: 385
- 13F value: $4.8B
- 13F period: 2026-06-30
- N-PORT fund positions: 32
- N-PORT value: $392.4M
- N-PORT report: 2026-05-31

## Top institutional holders (Form 13F)

_Showing 15 of 385 managers by value._

| Manager | Location | Value | Shares |
| --- | --- | --- | --- |
| BlackRock, Inc. | New York, NY | $671.6M | 2,529,623 |
| [VANGUARD GROUP INC](https://search.stillhousedata.com/firm/105958) | Valley Forge, PA | $537.3M | 2,106,595 |
| FMR LLC | BOSTON, MA | $522.3M | 1,967,088 |
| JANUS HENDERSON GROUP PLC | LONDON, X0 | $205.1M | 772,314 |
| [Mawer Investment Management Ltd.](https://search.stillhousedata.com/firm/159100) | CALGARY, A0 | $175.9M | 662,634 |
| STATE STREET CORP | BOSTON, MA | $175.8M | 662,141 |
| Capital International Investors | Los Angeles, CA | $164.5M | 619,479 |
| [GEODE CAPITAL MANAGEMENT, LLC](https://search.stillhousedata.com/firm/115504) | BOSTON, MA | $117.0M | 440,723 |
| UBS ASSET MANAGEMENT AMERICAS INC | CHICAGO, IL | $114.3M | 430,561 |
| DIMENSIONAL FUND ADVISORS LP | AUSTIN, TX | $105.0M | 395,428 |
| Hood River Capital Management LLC | PALM BEACH GARDENS, FL | $98.8M | 372,074 |
| [Channing Capital Management, LLC](https://search.stillhousedata.com/firm/128450) | Chicago, IL | $94.7M | 432,851 |
| NEUBERGER BERMAN GROUP LLC | NEW YORK, NY | $80.7M | 303,923 |
| [Clark Capital Management Group, Inc.](https://search.stillhousedata.com/firm/104796) | PHILADELPHIA, PA | $71.8M | 270,420 |
| BANK OF AMERICA CORP /DE/ | CHARLOTTE, NC | $70.7M | 266,375 |

## Top fund holders (N-PORT)

_Showing 15 of 32 fund positions by value._

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| [SMALLCAP World Fund Inc](https://search.stillhousedata.com/fund/S000009599) | SMALLCAP World Fund Inc | $179.0M | 22.09% |
| [Janus Henderson Venture Fund](https://search.stillhousedata.com/fund/S000010488) | JANUS INVESTMENT FUND | $59.1M | 192.71% |
| [VANGUARD EXTENDED MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002841) | VANGUARD INDEX FUNDS | $45.9M | 5.63% |
| [Fidelity Trend Fund](https://search.stillhousedata.com/fund/S000007496) | Fidelity Trend Fund | $40.4M | 97.55% |
| [U.S. MICRO CAP PORTFOLIO](https://search.stillhousedata.com/fund/S000000948) | DFA INVESTMENT DIMENSIONS GROUP INC | $17.7M | 23.65% |
| [VANGUARD RUSSELL 2000 INDEX FUND](https://search.stillhousedata.com/fund/S000030003) | VANGUARD SCOTTSDALE FUNDS | $17.5M | 9.99% |
| [PRIMECAP Odyssey Growth Fund](https://search.stillhousedata.com/fund/S000005540) | PRIMECAP Odyssey Funds | $14.8M | 27.21% |
| [Master Small Cap Index Series](https://search.stillhousedata.com/fund/S000002716) | Quantitative Master Series LLC | $6.8M | 14.07% |
| [HARTFORD SMALL COMPANY HLS FUND](https://search.stillhousedata.com/fund/S000003220) | HARTFORD SERIES FUND INC | $4.5M | 115.15% |
| [VANGUARD BALANCED INDEX FUND](https://search.stillhousedata.com/fund/S000002560) | VANGUARD VALLEY FORGE FUNDS | $2.3M | 0.40% |
| [BNY Mellon Smallcap Stock Index Fund](https://search.stillhousedata.com/fund/S000000132) | BNY MELLON INDEX FUNDS, INC. | $2.2M | 26.14% |
| [VANGUARD INSTITUTIONAL TOTAL STOCK MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002855) | VANGUARD INSTITUTIONAL INDEX FUNDS | $1.9M | 0.64% |
| [WALTHAUSEN SMALL CAP VALUE FUND](https://search.stillhousedata.com/fund/S000020728) | Walthausen Funds | $1.1M | 277.43% |
| [Fidelity Nasdaq Composite Index ETF](https://search.stillhousedata.com/fund/S000006011) | Fidelity Commonwealth Trust | $1.1M | 1.00% |
| [Columbia Variable Portfolio - Small Company Growth Fund](https://search.stillhousedata.com/fund/S000010658) | COLUMBIA FUNDS VARIABLE INSURANCE TRUST | $864K | 40.18% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/671044105.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

---

Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.