OSI SYSTEMS INC OSIS
CIK 0001039065 · CUSIP 671044105
Quarter-end disclosures, not live holdings.
Top 20 institutions
Weight means this stock's share of the manager's own portfolio.
| # | Manager | Value | Manager weight | Change vs prior | Source | |
|---|---|---|---|---|---|---|
| 01 | BlackRock Inc. CIK 1364742 · View history | $379.23M 2,655,321 shares | 0.01% | +10.93K(+0.40%)Added | SEC filing ↗ May 10, 2024 | ▾ |
| 02 | VANGUARD GROUP INC CIK 102909 · View history | $299.44M 2,096,606 shares | 0.01% | -1.27K(-0.10%)Reduced | SEC filing ↗ May 10, 2024 | ▾ |
| 03 | JANUS HENDERSON GROUP PLC CIK 1274173 · View history | $178.51M 1,249,889 shares | 0.10% | +19.68K(+1.60%)Added | SEC filing ↗ May 15, 2024 | ▾ |
| 04 | DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history | $114.94M 804,792 shares | 0.03% | -14.88K(-1.80%)Reduced | SEC filing ↗ May 10, 2024 | ▾ |
| 05 | STATE STREET CORP CIK 93751 · View history | $100.39M 702,915 shares | 0.00% | +15.33K(+2.20%)Added | SEC filing ↗ May 15, 2024 | ▾ |
| 06 | Clearbridge Investments, LLC CIK 1348883 · View history | $55.62M 389,446 shares | 0.04% | -1.29K(-0.30%)Reduced | SEC filing ↗ May 13, 2024 | ▾ |
| 07 | CREDIT SUISSE AG/ CIK 824468 · View history | $55.03M 385,337 shares | 0.05% | -8.71K(-2.20%)Reduced | SEC filing ↗ May 10, 2024 | ▾ |
| 08 | GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history | $51.65M 361,617 shares | 0.00% | +12.28K(+3.50%)Added | SEC filing ↗ May 13, 2024 | ▾ |
| 09 | NEUMEIER POMA INVESTMENT COUNSEL LLC CIK 1044936 · View history | $49.89M 349,295 shares | 4.57% | -32.48K(-8.50%)Reduced | SEC filing ↗ May 13, 2024 | ▾ |
| 10 | NEUBERGER BERMAN GROUP LLC CIK 1465109 · Amended · View history | $49.80M 348,834 shares | 0.04% | +16.09K(+4.80%)Added | SEC filing ↗ Nov 14, 2024 | ▾ |
| 11 | PRIMECAP MANAGEMENT CO/CA/ CIK 763212 · View history | $41.86M 293,100 shares | 0.03% | +7.90K(+2.80%)Added | SEC filing ↗ May 14, 2024 | ▾ |
| 12 | Hood River Capital Management LLC CIK 1578177 · View history | $40.89M 286,324 shares | 0.91% | -2.33K(-0.80%)Reduced | SEC filing ↗ May 15, 2024 | ▾ |
| 13 | SYSTEMATIC FINANCIAL MANAGEMENT LP CIK 1085936 · View history | $34.29M 240,118 shares | 0.96% | -1.43K(-0.60%)Reduced | SEC filing ↗ May 15, 2024 | ▾ |
| 14 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC CIK 884546 · View history | $30.52M 213,693 shares | 0.01% | +2.12K(+1.00%)Added | SEC filing ↗ May 9, 2024 | ▾ |
| 15 | Clark Capital Management Group, Inc. CIK 1352187 · View history | $28.68M 200,789 shares | 0.21% | +180.79K(+904.10%)Added | SEC filing ↗ May 15, 2024 | ▾ |
| 16 | Boston Partners CIK 1386060 · Amended · View history | $27.31M 193,554 shares | 0.03% | -1.05K(-0.50%)Reduced | SEC filing ↗ May 28, 2024 | ▾ |
| 17 | MARSHALL WACE, LLP CIK 1318757 · View history | $25.35M 177,476 shares | 0.04% | -37.58K(-17.50%)Reduced | SEC filing ↗ May 15, 2024 | ▾ |
| 18 | MORGAN STANLEY CIK 895421 · Amended · View history | $25.30M 177,156 shares | 0.00% | -51.66K(-22.60%)Reduced | SEC filing ↗ Oct 17, 2024 | ▾ |
| 19 | Invesco Ltd. CIK 914208 · View history | $24.57M 172,034 shares | 0.01% | -17.53K(-9.20%)Reduced | SEC filing ↗ May 14, 2024 | ▾ |
| 20 | NORTHERN TRUST CORP CIK 73124 · View history | $24.28M 170,005 shares | 0.00% | -3.85K(-2.20%)Reduced | SEC filing ↗ May 14, 2024 | ▾ |
Showing 20 / 251 institutions. The complete set is available through the API.
Coverage & totals by quarter
Reporting institutions by quarter
Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.
Explore all 251 reporting institutions.
This page includes 20 of 251 reporting institutions. Log in to look up the full history beyond 3 years, use advanced screening & filtering, download CSV, and get the complete set through the Akkru API.
- Download CSV
- Earlier quarters
- Advanced screening & filtering
- API & AI access
+ New accounts get free API credits to explore data beyond ownership filings.
For AI agents & developers
The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. This page lists 20 of 251 reporting institutions; totals use the complete disclosed data.
Without an account: the last 3 years, with the row caps stated on the page. A free account opens all history on file on these pages and the CSV of what a page shows. Rows beyond the caps and bulk retrieval go through the authenticated API / MCP / CLI.
MCP https://api.akkrudata.ai/mcp
akkru_institutional_holdings
{"action":"holders","cusip":"671044105","quarter":"2024Q1","type":"positions","page_size":100}Connect to MCP with OAuth and follow the returned pagination. Credits and usage limits depend on the account.
- MCP endpoint
- https://api.akkrudata.ai/mcp
- API / MCP / CLI documentation
- /documents
- llms.txt
- /llms.txt
Sources, coverage & how to read this data
Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.