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 OYSEU 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/OYSEU"
Use Arkolith to show who owns OYSEU, which funds added or reduced it, and which SEC filings prove each claim.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | Calamos Advisors LLC | $1.3M | 123K | —Held | Q1 2026 | |
| 2 | Clear Street Group Inc. | $522K | 51K | ▼−0.1% Reduced · −36 sh | Q1 2026 | |
| 3 | READYSTATE ASSET MANAGEMENT LP | $510K | 49K | —Held | Q1 2026 | |
| 4 | CITADEL ADVISORS LLC | $137K | 13K | ▲+0.8% Added · +101 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 | 4 funds | $10.2B |
| APPLE INCAAPL | 4 funds | $3.5B |
| AMAZON.COM INCAMZN | 4 funds | $3.2B |
| MICROSOFT CORPMSFT | 4 funds | $2.9B |
| META PLATFORMS INC-CLASS AMETA | 4 funds | $2.2B |
| ALPHABET INC-CL AGOOGL | 4 funds | $2.1B |
| BROADCOM INCAVGO | 4 funds | $1.6B |
| TESLA INCTSLA | 4 funds | $1.2B |
| SS SPDR S&P 500 ETF TRUST-USSPY | 4 funds | $685.5M |
| JOHNSON & JOHNSONJNJ | 4 funds | $662.1M |
| PAYPAL HOLDINGS INCPYPL | 4 funds | $383.6M |
| NETFLIX INCNFLX | 4 funds | $372.9M |
Ranked by how many of OYSEU'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 OYSEU. 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.