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 YCS 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/YCS"
Use Arkolith to show who owns YCS, which funds added or reduced it, and which SEC filings prove each claim.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | CITADEL ADVISORS LLC | $1.3M | 24K | ▼−10% Reduced · −3K sh | Q1 2026 | |
| 2 | JANE STREET GROUP, LLC | $707K | 13K | ▲+20% Added · +2K sh | Q1 2026 | |
| 3 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | $212K | 4K | ▲Added Added · +4K sh | Q1 2026 | |
| 4 | MORGAN STANLEY | $11K | 200 | —Held | Q1 2026 | |
| 5 | OSAIC HOLDINGS, INC. | $53 | 1 | —Held | 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 |
|---|---|---|
| AGQULTRA SILVER NEW | 43 funds | $70.4M |
| UGLcs | 40 funds | $38.7M |
| SVXYSHT VIX ST TRM | 17 funds | $19.8M |
| VIXMVIX MDTRM FUTR N | 14 funds | $17.3M |
| EUOULTRASHRT EURO | 8 funds | $2.3M |
| YCSthis pageULTRASHORT YEN N | 5 funds | $2.2M |
| ULEcs | 5 funds | $764K |
| YCLmc | 3 funds | $53K |
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 |
|---|---|---|
| NVIDIA CORPNVDA | 10 funds | $81.0B |
| APPLE INCAAPL | 10 funds | $79.5B |
| MICROSOFT CORPMSFT | 10 funds | $62.4B |
| SS SPDR S&P 500 ETF TRUST-USSPY | 10 funds | $56.1B |
| AMAZON.COM INCAMZN | 10 funds | $47.6B |
| ALPHABET INC-CL AGOOGL | 10 funds | $44.7B |
| BROADCOM INCAVGO | 10 funds | $34.9B |
| META PLATFORMS INC-CLASS AMETA | 10 funds | $29.6B |
| ALPHABET INC-CL CGOOG | 10 funds | $28.2B |
| JPMORGAN CHASE & COJPM | 10 funds | $27.4B |
| ISHARES CORE S&P 500 ETFIVV | 10 funds | $24.5B |
| INVESCO QQQ TRUST SERIES 1QQQ | 10 funds | $23.1B |
Ranked by how many of YCS'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 YCS. 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.