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 MD 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/MD"
Use Arkolith to show who owns MD, 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. | $290.4M | 13.6M | ▲+0.1% Added · +12K sh | Q1 2026 | |
| 2 | VANGUARD GROUP INC | $229.4M | 10.7M | ▼−1.5% Reduced · −169K sh | Q4 2025 | |
| 3 | VANGUARD PORTFOLIO MANAGEMENT LLC | $131.6M | 6.2M | ▲New +6.2M sh | Q1 2026 | |
| 4 | AMERICAN CENTURY COMPANIES INC | $84.0M | 3.9M | ▲+6.1% Added · +227K sh | Q1 2026 | |
| 5 | DIMENSIONAL FUND ADVISORS LP | $82.5M | 3.9M | ▲+8.1% Added · +288K sh | Q1 2026 | |
| 6 | VICTORY CAPITAL MANAGEMENT INC | $82.2M | 3.8M | ▲+0.6% Added · +24K sh | Q1 2026 | |
| 7 | VANGUARD CAPITAL MANAGEMENT LLC | $78.2M | 3.7M | ▲New +3.7M sh | Q1 2026 | |
| 8 | STATE STREET CORP | $72.3M | 3.4M | ▲+2.0% Added · +66K sh | Q1 2026 | |
| 9 | FMR LLC | $48.5M | 2.3M | ▼−6.6% Reduced · −161K sh | Q1 2026 | |
| 10 | GEODE CAPITAL MANAGEMENT, LLC | $46.8M | 2.2M | ▲+0.3% Added · +6K sh | Q1 2026 | |
| 11 | WASATCH ADVISORS LP | $43.9M | 2.1M | ▲New +2.1M sh | Q1 2026 | |
| 12 | D. E. Shaw & Co., Inc. | $36.5M | 1.7M | ▼−7.8% Reduced · −144K sh | Q1 2026 | |
| 13 | RENAISSANCE TECHNOLOGIES LLC | $32.8M | 1.5M | ▲+13% Added · +175K sh | Q1 2026 | |
| 14 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $30.9M | 1.4M | ▼−7.0% Reduced · −109K sh | Q1 2026 | |
| 15 | MORGAN STANLEY | $26.8M | 1.3M | ▼−4.1% Reduced · −53K sh | Q1 2026 | |
| 16 | FULLER & THALER ASSET MANAGEMENT, INC. | $26.3M | 1.2M | ▼~0% Reduced · −74 sh | Q1 2026 | |
| 17 | SILVERCREST ASSET MANAGEMENT GROUP LLC | $20.8M | 971K | ▼−6.0% Reduced · −62K sh | Q1 2026 | |
| 18 | Nuveen, LLC | $20.4M | 953K | ▼−21% Reduced · −247K sh | Q1 2026 | |
| 19 | Allspring Global Investments Holdings, LLC | $20.2M | 975K | ▲+53% Added · +336K sh | Q1 2026 | |
| 20 | NORTHERN TRUST CORP | $19.3M | 900K | ▲+3.2% Added · +28K sh | Q1 2026 | |
| 21 | GOLDMAN SACHS GROUP INC | $18.2M | 851K | ▲+8.2% Added · +64K sh | Q1 2026 | |
| 22 | ALLIANCEBERNSTEIN L.P. | $16.5M | 771K | ▼−5.5% Reduced · −45K sh | Q1 2026 | |
| 23 | Rockefeller Capital Management L.P. | $16.3M | 762K | ▲+28% Added · +168K sh | Q1 2026 | |
| 24 | BRIDGEWAY CAPITAL MANAGEMENT, LLC | $16.1M | 752K | ▲+1.6% Added · +11K sh | Q1 2026 | |
| 25 | Dana Investment Advisors, Inc. | $15.6M | 727K | ▲+12% Added · +79K 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 |
|---|---|---|---|---|---|
| Jun 9, 2026 | Moore Mary Ann E | EVP, GC, Chief Admin Off & Sec | Gift (G) | 18K | $0 |
| Jun 9, 2026 | Moore Mary Ann E | EVP, GC, Chief Admin Off & Sec | Gift (G) | 18K | $0 |
| Mar 1, 2026 | Moore Mary Ann E | EVP, GC, Chief Admin Off & Sec | Tax withholding (F) | 27K | $535K |
| Mar 1, 2026 | Moore Mary Ann E | EVP, GC, Chief Admin Off & Sec | Grant (A) | 40K | $0 |
| Mar 1, 2026 | Rossi Kasandra H | EVP, CFO and Treasurer | Tax withholding (F) | 4K | $73K |
| Dec 15, 2025 | ORDAN MARK S | Chief Executive Officer, Director | Sell (S) | 23K | $515K |
| Nov 17, 2025 | Rucker Michael A. | Director | Sell (S) | 10K | $241K |
| Nov 6, 2025 | Linynsky Laura A | Director | Sell (S) | 10K | $217K |
| Aug 20, 2025 | McEachin Thomas | Director | Gift (G) | 625 | $0 |
| Aug 19, 2025 | McEachin Thomas | Director | Gift (G) | 54K | $0 |
| Aug 1, 2025 | Neeb Don Gregory | EVP, Chief Invest & Strategy | Grant (A) | 320K | $0 |
| Aug 1, 2025 | Newman Kurt Douglas | Director | Grant (A) | 10K | $0 |
| Company | Co-held by | Combined value |
|---|---|---|
| MICROSOFT CORPMSFT | 101 funds | $44.6B |
| ALPHABET INC-CL AGOOGL | 101 funds | $30.5B |
| JPMORGAN CHASE & COJPM | 100 funds | $13.9B |
| NVIDIA CORPNVDA | 99 funds | $59.4B |
| META PLATFORMS INC-CLASS AMETA | 99 funds | $20.9B |
| JOHNSON & JOHNSONJNJ | 99 funds | $11.1B |
| WALMART INCWMT | 99 funds | $8.0B |
| APPLE INCAAPL | 98 funds | $51.2B |
| AMAZON.COM INCAMZN | 98 funds | $31.5B |
| COSTCO WHOLESALE CORPCOST | 98 funds | $7.5B |
| UNITEDHEALTH GROUP INCUNH | 98 funds | $4.9B |
| MICRON TECHNOLOGY INCMU | 97 funds | $7.0B |
Ranked by how many of MD'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 MD. 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.