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 MBVIU 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/MBVIU"
Use Arkolith to show who owns MBVIU, which funds added or reduced it, and which SEC filings prove each claim.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | LMR Partners LLP | $2.5M | 250K | —Held | Q1 2026 | |
| 2 | READYSTATE ASSET MANAGEMENT LP | $2.3M | 225K | —Held | Q1 2026 | |
| 3 | Clear Street Group Inc. | $1.3M | 127K | ▲+53% Added · +44K sh | Q1 2026 | |
| 4 | Walleye Capital LLC | $1.0M | 100K | —Held | Q1 2026 | |
| 5 | Westchester Capital Management, LLC | $508K | 50K | —Held | Q1 2026 | |
| 6 | Calamos Advisors LLC | $250K | 25K | —Held | Q1 2026 | |
| 7 | Magnetar Financial LLC | $51 | 5 | ▼−100% Reduced · −1.1M 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.
No Form 4 insider transactions on file yet.
| Class | 13F holders | Value held |
|---|---|---|
| MBVIORDSH | 45 funds | $221.4M |
| MBVIWWarrant | 34 funds | $2.6M |
| MBVIUthis pageUnit | 12 funds | $19.5M |
Same issuer, multiple share classes. The consensus leaderboards count this company once across all classes; this is the per-class detail.
| Company | Co-held by | Combined value |
|---|---|---|
| APPLE INCAAPL | 10 funds | $3.8B |
| MICROSOFT CORPMSFT | 10 funds | $3.0B |
| AMAZON.COM INCAMZN | 9 funds | $3.8B |
| META PLATFORMS INC-CLASS AMETA | 9 funds | $2.5B |
| ALPHABET INC-CL AGOOGL | 9 funds | $2.3B |
| BROADCOM INCAVGO | 9 funds | $1.8B |
| CANTOR EQUITY PARTNERS-CL ACEPF | 9 funds | $32.6M |
| PROCAP ACQUISITION CORP - APCAP | 9 funds | $31.3M |
| ARMADA ACQUISITION -CLASS AXRPN | 9 funds | $28.5M |
| BITCOIN INFRASTRUCTURE ACQUIBIXIU | 9 funds | $19.0M |
| CANTOR EQUITY PARTNERS-CL ACEPV | 9 funds | $17.1M |
| CANTOR EQUITY PARTNERS III-ACAEP | 9 funds | $15.5M |
Ranked by how many of MBVIU's institutional holders also hold each name, a cross-fund conviction signal. Via the MCP server (ticker.co_held).
No filings captured for this ticker in the live stream yet.
13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for MBVIU. 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.