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 ETU 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/ETU"
Use Arkolith to show who owns ETU, which funds added or reduced it, and which SEC filings prove each claim.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | StoneX Group Inc. | $71K | 12K | ▲New +12K sh | Q1 2026 | |
| 2 | GROUP ONE TRADING LLC | $9K | 2K | ▲New +2K sh | Q1 2026 | |
| 3 | Larson Financial Group LLC | $2K | 405 | ▲+34% Added · +103 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 |
|---|---|---|
| BTCLT REX TARGET ETF | 6 funds | $536K |
| ETUthis pageT REX 2X LONG ET | 4 funds | $96K |
| BTCZT REX TARGET ETF | 3 funds | $1.4M |
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 |
|---|---|---|
| STE STR SPDR PT S&P 500 ETFSPYM | 3 funds | $202.9M |
| GLOBAL X URANIUM ETFURA | 3 funds | $85.5M |
| AMAZON.COM INCAMZN | 3 funds | $79.7M |
| AMPLIFY JUNIOR SILVER MINERSSILJ | 3 funds | $72.3M |
| MICROSOFT CORPMSFT | 3 funds | $64.7M |
| MICRON TECHNOLOGY INCMU | 3 funds | $56.3M |
| TAIWAN SEMICONDUCTOR-SP ADRTSM | 3 funds | $49.2M |
| APPLIED MATERIALS INCAMAT | 3 funds | $41.3M |
| BROADCOM INCAVGO | 3 funds | $41.0M |
| ALPHABET INC-CL AGOOGL | 3 funds | $40.8M |
| BERKSHIRE HATHAWAY INC-CL BBRK/B | 3 funds | $40.3M |
| KKR & CO INCKKR | 3 funds | $35.4M |
Ranked by how many of ETU'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 ETU. 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.