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 PROSY 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/PROSY"
Use Arkolith to show who owns PROSY, which funds added or reduced it, and which SEC filings prove each claim.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | DRW Securities, LLC | $702K | 76K | ▲New +76K sh | Q1 2026 | |
| 2 | YOUSIF CAPITAL MANAGEMENT, LLC | $584K | 65K | ▼−12% Reduced · −9K sh | Q1 2026 | |
| 3 | GAMMA Investing LLC | $406K | 44K | ▲+6.3% Added · +3K 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 |
|---|---|---|
| NVIDIA CORPNVDA | 3 funds | $596.9M |
| APPLE INCAAPL | 3 funds | $502.9M |
| MICROSOFT CORPMSFT | 3 funds | $366.6M |
| ALPHABET INC-CL AGOOGL | 3 funds | $286.5M |
| AMAZON.COM INCAMZN | 3 funds | $267.5M |
| BROADCOM INCAVGO | 3 funds | $200.4M |
| ALPHABET INC-CL CGOOG | 3 funds | $189.2M |
| META PLATFORMS INC-CLASS AMETA | 3 funds | $180.6M |
| SS SPDR S&P 500 ETF TRUST-USSPY | 3 funds | $169.9M |
| TESLA INCTSLA | 3 funds | $158.8M |
| JPMORGAN CHASE & COJPM | 3 funds | $132.4M |
| BERKSHIRE HATHAWAY INC-CL BBRK/B | 3 funds | $123.2M |
Ranked by how many of PROSY'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 PROSY. 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.