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 MCRB 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/MCRB"
Use Arkolith to show who owns MCRB, which funds added or reduced it, and which SEC filings prove each claim.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | Vontobel Holding Ltd. | $1.2M | 138K | ▲+34% Added · +35K sh | Q1 2026 | |
| 2 | VANGUARD FIDUCIARY TRUST CO | $352K | 40K | ▲New +40K sh | Q1 2026 | |
| 3 | STATE STREET CORP | $301K | 34K | —Held | Q1 2026 | |
| 4 | SBI Securities Co., Ltd. | $31K | 3K | —Held | Q1 2026 | |
| 5 | GROUP ONE TRADING LLC | $7K | 824 | ▲New +824 sh | Q1 2026 | |
| 6 | Sound Income Strategies, LLC | $71 | 8 | —Held | Q1 2026 | |
| 7 | Arax Advisory Partners | $18 | 6 | ▲+200% Added · +4 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 4, 2026 | Kender Richard N | See Remarks, Director | Grant (A) | 150K | $0 |
| Mar 4, 2026 | DesRosier Thomas | See Remarks | Grant (A) | 23K | $0 |
| Mar 4, 2026 | Thorell Marella | See Remarks | Grant (A) | 23K | $0 |
| Mar 4, 2026 | Henn Matthew R | See Remarks | Grant (A) | 75K | $0 |
| Mar 4, 2026 | Brady Kelly | See Remarks | Grant (A) | 56K | $0 |
| Feb 15, 2026 | Shaff Eric D. | Director | Option exercise (M) | 723 | — |
| Feb 15, 2026 | Shaff Eric D. | Director | Sell (S) | 259 | $2K |
| Feb 15, 2026 | Shaff Eric D. | Director | Option exercise (M) | 391 | $0 |
| Feb 15, 2026 | Shaff Eric D. | Director | Option exercise (M) | 333 | $0 |
| Feb 15, 2026 | Young Teresa L. | See Remarks | Option exercise (M) | 231 | — |
| Feb 15, 2026 | Henn Matthew R | See Remarks | Option exercise (M) | 98 | $0 |
| Feb 15, 2026 | Young Teresa L. | See Remarks | Option exercise (M) | 98 | $0 |
| Company | Co-held by | Combined value |
|---|---|---|
| AMAZON.COM INCAMZN | 7 funds | $962.3M |
| ALPHABET INC-CL AGOOGL | 7 funds | $778.3M |
| ELI LILLY & COLLY | 7 funds | $185.1M |
| CAPITAL ONE FINANCIAL CORPCOF | 7 funds | $144.1M |
| S&P GLOBAL INCSPGI | 7 funds | $77.8M |
| BARRICK MINING CORPB | 7 funds | $71.5M |
| UNITEDHEALTH GROUP INCUNH | 7 funds | $68.3M |
| ELEVANCE HEALTH INCELV | 7 funds | $40.9M |
| WESTERN DIGITAL CORPWDC | 7 funds | $38.8M |
| SANDISK CORPSNDK | 7 funds | $37.5M |
| ALNYLAM PHARMACEUTICALS INCALNY | 7 funds | $34.7M |
| PAN AMERICAN SILVER CORPPAAS | 7 funds | $29.9M |
Ranked by how many of MCRB'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 MCRB. 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.