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 JACS-R 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/JACS-R"
Use Arkolith to show who owns JACS-R, which funds added or reduced it, and which SEC filings prove each claim.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | Polar Asset Management Partners Inc. | $268K | 1.5M | —Held | Q1 2026 | |
| 2 | AQR Arbitrage LLC | $140K | 1.2M | ▼−2.5% Reduced · −30K sh | Q1 2026 | |
| 3 | Hudson Bay Capital Management LP | $110K | 950K | —Held | Q1 2026 | |
| 4 | Magnetar Financial LLC | $105K | 600K | —Held | Q1 2026 | |
| 5 | Westchester Capital Management, LLC | $86K | 850K | —Held | Q1 2026 | |
| 6 | Shaolin Capital Management LLC | $83K | 714K | ▼−4.1% Reduced · −30K sh | Q1 2026 | |
| 7 | Verition Fund Management LLC | $80K | 691K | ▲+2.2% Added · +15K sh | Q1 2026 | |
| 8 | LMR Partners LLP | $51K | 444K | —Held | Q1 2026 | |
| 9 | PICTON MAHONEY ASSET MANAGEMENT | $46K | 400K | —Held | Q1 2026 | |
| 10 | TENOR CAPITAL MANAGEMENT Co., L.P. | $46K | 400K | —Held | Q1 2026 | |
| 11 | RIVERNORTH CAPITAL MANAGEMENT, LLC | $46K | 400K | —Held | Q1 2026 | |
| 12 | Clear Street Group Inc. | $30K | 260K | ▲+0.8% Added · +2K sh | Q1 2026 | |
| 13 | HIGHBRIDGE CAPITAL MANAGEMENT LLC | $26K | 228K | ▲+15% Added · +30K sh | Q1 2026 | |
| 14 | CSS LLC/IL | $23K | 20K | —Held | Q1 2026 | |
| 15 | WHITEBOX ADVISORS LLC | $20K | 175K | —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.
| Company | Co-held by | Combined value |
|---|---|---|
| LAUNCH TWO ACQUISITION- CL ALPBB | 15 funds | $103.0M |
| JACKSON ACQUISITION CO-CL AJACS | 15 funds | $87.4M |
| ARMADA ACQUISITION -CLASS AXRPN | 15 funds | $79.9M |
| CAL REDWOOD ACQUISIT-CL ACRAQ | 15 funds | $78.2M |
| REPUBLIC DIGITAL ACQUIS-CL ARDAG | 15 funds | $77.5M |
| D. BORAL ARC ACQUISIT - CL ABCAR | 15 funds | $73.4M |
| BTC DEVELOPMENT CORP-CL ABDCI | 15 funds | $65.9M |
| CANTOR EQUITY PARTNERS-CL ACEPV | 15 funds | $50.5M |
| LAUNCHPAD CADENZA ACQUISITIOLPCVU | 15 funds | $21.5M |
| MOUNTAIN LAKE ACQUISITION COMLACR | 15 funds | $2.6M |
| CAL REDWOOD ACQUISITION CORPCRAQR | 15 funds | $1.7M |
| DRUGS MADE IN AMERICA ACQUISDMII | 14 funds | $118.6M |
Ranked by how many of JACS-R'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 JACS-R. 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.