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 SOFX 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/SOFX"
Use Arkolith to show who owns SOFX, which funds added or reduced it, and which SEC filings prove each claim.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | UBS Group AG | $1.7M | 179K | ▼−3.1% Reduced · −6K sh | Q1 2026 | |
| 2 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | $1.4M | 148K | ▲+111% Added · +78K sh | Q1 2026 | |
| 3 | Optiver Holding B.V. | $502K | 54K | ▲+570% Added · +46K sh | Q1 2026 | |
| 4 | GTS SECURITIES LLC | $176K | 19K | ▲New +19K sh | Q1 2026 | |
| 5 | GROUP ONE TRADING LLC | $1K | 130 | ▲New +130 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 |
|---|---|---|
| MICROSOFT CORPMSFT | 6 funds | $14.1B |
| BROADCOM INCAVGO | 6 funds | $8.5B |
| AMAZON.COM INCAMZN | 6 funds | $7.9B |
| ALPHABET INC-CL AGOOGL | 6 funds | $7.9B |
| META PLATFORMS INC-CLASS AMETA | 6 funds | $6.1B |
| JPMORGAN CHASE & COJPM | 6 funds | $5.8B |
| TAIWAN SEMICONDUCTOR-SP ADRTSM | 6 funds | $5.5B |
| TESLA INCTSLA | 6 funds | $3.9B |
| MICRON TECHNOLOGY INCMU | 6 funds | $3.6B |
Ranked by how many of SOFX'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 SOFX. 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.