The public view is the crawlable proof. The same sourced dataset is available through REST and MCP for agents, research scripts, and back-office tools.
This stock page is the Follow view. The Build view lets your agent query SEM owners, fund changes, insider filings, and source links through REST or MCP.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/stocks/SEM"
Use Arkolith to show who owns SEM, which funds added or reduced it, and which SEC filings prove each claim.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | $281.2M | 17.3M | ▼−7.7% Reduced · −1.4M sh | Q1 2026 | |
| 2 | VANGUARD GROUP INC | $185.3M | 12.5M | ▼−0.8% Reduced · −94K sh | Q4 2025 | |
| 3 | VANGUARD PORTFOLIO MANAGEMENT LLC | $109.5M | 6.7M | ▲New +6.7M sh | Q1 2026 | |
| 4 | DIMENSIONAL FUND ADVISORS LP | $90.2M | 5.5M | ▲+3.8% Added · +203K sh | Q1 2026 | |
| 5 | FIL Ltd | $80.8M | 5.0M | ▲New +5.0M sh | Q1 2026 | |
| 6 | VANGUARD CAPITAL MANAGEMENT LLC | $78.5M | 4.8M | ▲New +4.8M sh | Q1 2026 | |
| 7 | STATE STREET CORP | $70.4M | 4.3M | ▼−1.8% Reduced · −77K sh | Q1 2026 | |
| 8 | GEODE CAPITAL MANAGEMENT, LLC | $43.4M | 2.7M | ▼−15% Reduced · −456K sh | Q1 2026 | |
| 9 | HSBC HOLDINGS PLC | $36.6M | 2.2M | ▲77× Added · +2.2M sh | Q1 2026 | |
| 10 | GOLDMAN SACHS GROUP INC | $33.9M | 2.1M | ▲+319% Added · +1.6M sh | Q1 2026 | |
| 11 | SOROS FUND MANAGEMENT LLC | $29.9M | 1.8M | ▲New +1.8M sh | Q1 2026 | |
| 12 | AQR Arbitrage LLC | $29.3M | 1.8M | ▲New +1.8M sh | Q1 2026 | |
| 13 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $27.8M | 1.7M | ▲+1.1% Added · +18K sh | Q1 2026 | |
| 14 | Qube Research & Technologies Ltd | $24.4M | 1.5M | ▲+708% Added · +1.3M sh | Q1 2026 | |
| 15 | Polar Asset Management Partners Inc. | $22.8M | 1.4M | ▲New +1.4M sh | Q1 2026 | |
| 16 | NORTHERN TRUST CORP | $22.3M | 1.4M | ▲+5.7% Added · +73K sh | Q1 2026 | |
| 17 | D. E. Shaw & Co., Inc. | $22.2M | 1.4M | ▼−38% Reduced · −851K sh | Q1 2026 | |
| 18 | Woodline Partners LP | $20.0M | 1.2M | ▼−8.5% Reduced · −114K sh | Q1 2026 | |
| 19 | ALPINE ASSOCIATES MANAGEMENT INC. | $19.2M | 1.2M | ▲New +1.2M sh | Q1 2026 | |
| 20 | TIG Advisors, LLC | $17.4M | 1.1M | ▲14× Added · +996K sh | Q1 2026 | |
| 21 | Bank of New York Mellon Corp | $17.4M | 1.1M | ▲+0.5% Added · +5K sh | Q1 2026 | |
| 22 | Grantham, Mayo, Van Otterloo & Co. LLC | $16.1M | 987K | ▲New +987K sh | Q1 2026 | |
| 23 | BALYASNY ASSET MANAGEMENT L.P. | $14.7M | 905K | ▲16× Added · +848K sh | Q1 2026 | |
| 24 | MILLENNIUM MANAGEMENT LLC | $13.9M | 853K | ▲+56% Added · +305K sh | Q1 2026 | |
| 25 | MORGAN STANLEY | $13.9M | 851K | ▼−12% Reduced · −115K 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 |
|---|---|---|---|---|---|
| Feb 11, 2026 | Frist William H. | Director | Grant (A) | 1K | $18K |
| Nov 1, 2025 | Duggan John F. | Executive Vice President | Tax withholding (F) | 5K | $67K |
| Nov 1, 2025 | Malatesta Michael F | CHIEF FINANCIAL OFFICER | Tax withholding (F) | 7K | $102K |
| Oct 28, 2025 | Duggan John F. | Executive Vice President | Grant (A) | 50K | $0 |
| Oct 28, 2025 | Frist William H. | Director | Grant (A) | 1K | $18K |
| Oct 28, 2025 | Weigl Christopher | CHIEF ACCOUNTING OFFICER | Grant (A) | 20K | $0 |
| Aug 1, 2025 | Saich John A. | EXECUTIVE VICE PRESIDENT | Tax withholding (F) | 22K | $273K |
| Aug 1, 2025 | Rusignuolo Brian R. | Chief Information Officer | Tax withholding (F) | 15K | $185K |
| Aug 1, 2025 | CHERNOW DAVID S | CEO, Director | Tax withholding (F) | 49K | $617K |
| Aug 1, 2025 | JACKSON MARTIN F | EXECUTIVE VICE PRESIDENT | Tax withholding (F) | 29K | $370K |
| Aug 1, 2025 | TARVIN MICHAEL E | EXECUTIVE VICE PRESIDENT | Tax withholding (F) | 20K | $247K |
| Aug 1, 2025 | Mullin Thomas P | CO-PRESIDENT | Tax withholding (F) | 22K | $277K |
| Company | Co-held by | Combined value |
|---|---|---|
| MICROSOFT CORPMSFT | 81 funds | $36.8B |
| AMAZON.COM INCAMZN | 80 funds | $27.3B |
| ALPHABET INC-CL AGOOGL | 80 funds | $25.6B |
| META PLATFORMS INC-CLASS AMETA | 80 funds | $17.0B |
| SALESFORCE INCCRM | 79 funds | $3.9B |
| NVIDIA CORPNVDA | 78 funds | $50.2B |
| BROADCOM INCAVGO | 78 funds | $19.0B |
| TESLA INCTSLA | 78 funds | $10.1B |
| ELI LILLY & COLLY | 78 funds | $9.3B |
| APPLE INCAAPL | 77 funds | $39.9B |
| ADVANCED MICRO DEVICESAMD | 77 funds | $4.3B |
| APPLIED MATERIALS INCAMAT | 77 funds | $4.2B |
Ranked by how many of SEM'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 SEM. 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.