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 CUBWU 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/CUBWU"
Use Arkolith to show who owns CUBWU, which funds added or reduced it, and which SEC filings prove each claim.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | Clear Street Group Inc. | $92K | 9K | ▲+43% Added · +3K sh | Q1 2026 | |
| 2 | Magnetar Financial LLC | $41 | 3 | ▲New +3 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.
| Company | Co-held by | Combined value |
|---|---|---|
| COREWEAVE INC-CL ACRWV | 2 funds | $5.0B |
| ADVANCED MICRO DEVICESAMD | 2 funds | $1.1B |
| MICROSOFT CORPMSFT | 2 funds | $1.1B |
| APPLE INCAAPL | 2 funds | $962.7M |
| AMAZON.COM INCAMZN | 2 funds | $779.9M |
| SANDISK CORPSNDK | 2 funds | $778.4M |
| META PLATFORMS INC-CLASS AMETA | 2 funds | $747.1M |
| ALPHABET INC-CL AGOOGL | 2 funds | $579.4M |
| UNITEDHEALTH GROUP INCUNH | 2 funds | $164.4M |
| TESLA INCTSLA | 2 funds | $102.4M |
| ROBINHOOD MARKETS INC - AHOOD | 2 funds | $100.7M |
| D-WAVE QUANTUM INCQBTS | 2 funds | $82.9M |
Ranked by how many of CUBWU'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 CUBWU. 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.