This stock page is the public Follow view. For one current, evidence-backed answer, use capital_change_brief through REST or MCP. It compares tracked 13F changes with qualifying Form 4 activity and cites the SEC evidence.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/stocks/OSIS/capital-change-brief"
Use Arkolith's capital_change_brief for OSIS. Tell me what changed, whether insider activity corroborates it, and cite the SEC evidence.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | $671.6M | 2.5M | ▼−1.3% Reduced · −32K sh | Q1 2026 | |
| 2 | FMR LLC | $522.3M | 2.0M | ▲+19% Added · +310K sh | Q1 2026 | |
| 3 | VANGUARD PORTFOLIO MANAGEMENT LLC | $331.8M | 1.2M | ▲New +1.2M sh | Q1 2026 | |
| 4 | JANUS HENDERSON GROUP PLC | $205.1M | 772K | ▲+2.6% Added · +20K sh | Q1 2026 | |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | $185.7M | 699K | ▲New +699K sh | Q1 2026 | |
| 6 | Mawer Investment Management Ltd. | $175.9M | 663K | ▼−18% Reduced · −141K sh | Q1 2026 | |
| 7 | STATE STREET CORP | $175.8M | 662K | ▲+0.6% Added · +4K sh | Q1 2026 | |
| 8 | GEODE CAPITAL MANAGEMENT, LLC | $117.0M | 441K | ▲+7.2% Added · +30K sh | Q1 2026 | |
| 9 | UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AME | $114.3M | 431K | ▼−14% Reduced · −68K sh | Q1 2026 | |
| 10 | DIMENSIONAL FUND ADVISORS LP | $105.0M | 395K | ▼−2.8% Reduced · −11K sh | Q1 2026 | |
| 11 | Hood River Capital Management LLC | $98.8M | 372K | ▼−1.9% Reduced · −7K sh | Q1 2026 | |
| 12 | Neuberger Berman Group LLC | $80.7M | 304K | ▲+1.0% Added · +3K sh | Q1 2026 | |
| 13 | Clark Capital Management Group, Inc. | $71.8M | 270K | ▲+1.6% Added · +4K sh | Q1 2026 | |
| 14 | Channing Capital Management, LLC | $70.9M | 267K | ▲New +267K sh | Q1 2026 | |
| 15 | BANK OF AMERICA CORP /DE/ | $70.7M | 266K | ▼−6.9% Reduced · −20K sh | Q1 2026 | |
| 16 | PRICE T ROWE ASSOCIATES INC /MD/ | $68.9M | 260K | ▲+1.8% Added · +4K sh | Q1 2026 | |
| 17 | PRIMECAP MANAGEMENT CO/CA/ | $65.0M | 245K | ▼−8.6% Reduced · −23K sh | Q1 2026 | |
| 18 | MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | $61.6M | 232K | ▲+43% Added · +69K sh | Q1 2026 | |
| 19 | SYSTEMATIC FINANCIAL MANAGEMENT LP | $58.2M | 219K | ▼−6.0% Reduced · −14K sh | Q1 2026 | |
| 20 | MORGAN STANLEY | $55.9M | 210K | ▼−5.6% Reduced · −13K sh | Q1 2026 | |
| 21 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $53.4M | 201K | ▼−0.5% Reduced · −1K sh | Q1 2026 | |
| 22 | LOOMIS SAYLES & CO L P | $50.8M | 191K | ▼−7.7% Reduced · −16K sh | Q1 2026 | |
| 23 | VAN ECK ASSOCIATES CORP | Withheld | 188K | ▼−17% Reduced · −39K sh | Q1 2026 | |
| 24 | JPMORGAN CHASE & CO | $45.7M | 173K | ▲+4.7% Added · +8K sh | Q1 2026 | |
| 25 | WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | $45.6M | 172K | ▼−10% Reduced · −20K sh | Q1 2026 |
Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Jul 6, 2026 | HAWKINS JAMES B | Director | Tax withholding (F) | 231 | $51K |
| Jul 6, 2026 | CHIZEVER GERALD M | Director | Tax withholding (F) | 231 | $51K |
| Jul 6, 2026 | Bernard Kelli | Director | Tax withholding (F) | 202 | $45K |
| Jun 30, 2026 | EDRICK ALAN I | EVP & CFO | Grant (A) | 75 | $11K |
| Jun 30, 2026 | Constantine W Paul | PRES., SPACELABS HEALTHCARE | Grant (A) | 55 | $10K |
| Jun 30, 2026 | MEHRA AJAY | PRESIDENT AND CEO, Director | Grant (A) | 75 | $11K |
| Jun 30, 2026 | Morben Paul Keith | PRES., OPTOELECTRONICS DIV | Grant (A) | 75 | $11K |
| Jun 30, 2026 | Grindstaff Glenn | CHIEF HUMAN RESOURCES OFFICER | Grant (A) | 17 | $3K |
| Jun 30, 2026 | SZE VICTOR S | GENERAL COUNSEL | Grant (A) | 75 | $11K |
| Jun 30, 2026 | Tropeano Michael | PRESIDENT, RAPISCAN SYSTEMS | Grant (A) | 75 | $11K |
| Jun 30, 2026 | Okawa Cary M. | CHIEF ACCOUNTING OFFICER | Grant (A) | 28 | $5K |
| May 4, 2026 | CHOPRA DEEPAK | Director | Sell (S) | 20K | $5.6M |
| Company | Co-held by | Combined value |
|---|---|---|
| MICROSOFT CORPMSFT | 109 funds | $47.0B |
| ALPHABET INC-CL AGOOGL | 107 funds | $31.7B |
| AMAZON.COM INCAMZN | 106 funds | $34.1B |
| BROADCOM INCAVGO | 106 funds | $24.4B |
| META PLATFORMS INC-CLASS AMETA | 106 funds | $22.4B |
| UNITEDHEALTH GROUP INCUNH | 106 funds | $4.2B |
| VISA INC-CLASS A SHARESV | 105 funds | $8.8B |
| MASTERCARD INC - AMA | 105 funds | $8.8B |
| NVIDIA CORPNVDA | 104 funds | $65.2B |
| APPLE INCAAPL | 104 funds | $55.3B |
| JPMORGAN CHASE & COJPM | 103 funds | $15.8B |
| ELI LILLY & COLLY | 103 funds | $11.8B |
Ranked by how many of OSIS's institutional holders also hold each name, a cross-fund conviction signal. Via the MCP server (ticker.co_held).
13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for OSIS. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes. Every panel above is one call to the Arkolith API & MCP server.