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 MED 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/MED"
Use Arkolith to show who owns MED, 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. | $9.6M | 944K | ▲+3.2% Added · +30K sh | Q1 2026 | |
| 2 | RENAISSANCE TECHNOLOGIES LLC | $7.9M | 774K | ▼−0.9% Reduced · −7K sh | Q1 2026 | |
| 3 | VANGUARD GROUP INC | $7.6M | 711K | ▲~0% Added · +190 sh | Q4 2025 | |
| 4 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $6.4M | 632K | ▼−19% Reduced · −145K sh | Q1 2026 | |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | $4.5M | 444K | ▲New +444K sh | Q1 2026 | |
| 6 | DIMENSIONAL FUND ADVISORS LP | $3.7M | 362K | ▲+11% Added · +36K sh | Q1 2026 | |
| 7 | TWO SIGMA INVESTMENTS, LP | $3.4M | 338K | ▲+321% Added · +258K sh | Q1 2026 | |
| 8 | MORGAN STANLEY | $3.3M | 325K | ▼−2.9% Reduced · −10K sh | Q1 2026 | |
| 9 | GEODE CAPITAL MANAGEMENT, LLC | $2.6M | 253K | ▲+2.4% Added · +6K sh | Q1 2026 | |
| 10 | Man Group plc | $2.4M | 236K | ▼−0.1% Reduced · −288 sh | Q1 2026 | |
| 11 | AMERICAN CENTURY COMPANIES INC | $2.3M | 224K | ▲+3.0% Added · +6K sh | Q1 2026 | |
| 12 | STATE STREET CORP | $2.3M | 223K | ▲+0.4% Added · +938 sh | Q1 2026 | |
| 13 | VANGUARD PORTFOLIO MANAGEMENT LLC | $2.1M | 203K | ▲New +203K sh | Q1 2026 | |
| 14 | Lido Advisors, LLC | $1.9M | 183K | ▼−45% Reduced · −148K sh | Q1 2026 | |
| 15 | Trexquant Investment LP | $1.8M | 180K | ▲+42% Added · +53K sh | Q1 2026 | |
| 16 | D. E. Shaw & Co., Inc. | $1.6M | 161K | ▼−27% Reduced · −59K sh | Q1 2026 | |
| 17 | BRIDGEWAY CAPITAL MANAGEMENT, LLC | $1.6M | 157K | ▲+33% Added · +39K sh | Q1 2026 | |
| 18 | GOLDMAN SACHS GROUP INC | $1.6M | 153K | ▼−15% Reduced · −28K sh | Q1 2026 | |
| 19 | AQR CAPITAL MANAGEMENT LLC | $1.5M | 146K | ▲+11% Added · +14K sh | Q1 2026 | |
| 20 | Quinn Opportunity Partners LLC | $1.3M | 127K | —Held | Q1 2026 | |
| 21 | JANE STREET GROUP, LLC | $1.3M | 126K | ▲Added Added · +126K sh | Q1 2026 | |
| 22 | NORTHERN TRUST CORP | $944K | 93K | ▲+5.6% Added · +5K sh | Q1 2026 | |
| 23 | Jump Financial, LLC | $926K | 91K | ▲New +91K sh | Q1 2026 | |
| 24 | BANK OF AMERICA CORP /DE/ | $905K | 89K | ▼−8.9% Reduced · −9K sh | Q1 2026 | |
| 25 | JPMORGAN CHASE & CO | $871K | 87K | ▲+60% Added · +33K 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 |
|---|---|---|---|---|---|
| Mar 25, 2026 | MacKenzie Jonathan Barrett | VP, Finance & CAO | Grant (A) | 11K | $0 |
| Mar 25, 2026 | Chard Daniel R | Chairman & CEO, Director | Grant (A) | 37K | $0 |
| Mar 25, 2026 | Chard Daniel R | Chairman & CEO, Director | Tax withholding (F) | 20K | $193K |
| Mar 25, 2026 | Maloney James P. | Chief Financial Officer | Grant (A) | 1K | $0 |
| Mar 25, 2026 | Maloney James P. | Chief Financial Officer | Grant (A) | 34K | $0 |
| Mar 25, 2026 | Maloney James P. | Chief Financial Officer | Tax withholding (F) | 3K | $31K |
| Mar 25, 2026 | MacKenzie Jonathan Barrett | VP, Finance & CAO | Tax withholding (F) | 862 | $8K |
| Mar 25, 2026 | Chard Daniel R | Chairman & CEO, Director | Grant (A) | 5K | $0 |
| Mar 20, 2026 | Chard Daniel R | Chairman & CEO, Director | Buy (P) | 18K | $179K |
| Mar 17, 2026 | Chard Daniel R | Chairman & CEO, Director | Tax withholding (F) | 3K | $27K |
| Mar 17, 2026 | MacKenzie Jonathan Barrett | VP, Finance & CAO | Tax withholding (F) | 70 | $704 |
| Mar 17, 2026 | Maloney James P. | Chief Financial Officer | Tax withholding (F) | 482 | $5K |
| Company | Co-held by | Combined value |
|---|---|---|
| NVIDIA CORPNVDA | 29 funds | $13.4B |
| BROADCOM INCAVGO | 29 funds | $4.9B |
| APPLE INCAAPL | 28 funds | $12.3B |
| MICROSOFT CORPMSFT | 28 funds | $10.5B |
| AMAZON.COM INCAMZN | 28 funds | $7.4B |
| ALPHABET INC-CL AGOOGL | 28 funds | $6.5B |
| ALPHABET INC-CL CGOOG | 28 funds | $4.4B |
| META PLATFORMS INC-CLASS AMETA | 28 funds | $4.1B |
| ELI LILLY & COLLY | 28 funds | $2.8B |
| TESLA INCTSLA | 28 funds | $2.5B |
| VISA INC-CLASS A SHARESV | 28 funds | $1.9B |
| ABBVIE INCABBV | 28 funds | $1.9B |
Ranked by how many of MED'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 MED. 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.