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 ARCIU 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/ARCIU"
Use Arkolith to show who owns ARCIU, which funds added or reduced it, and which SEC filings prove each claim.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | LMR Partners LLP | $12.5M | 1.3M | ▲New +1.3M sh | Q1 2026 | |
| 2 | Alberta Investment Management Corp | $10.0M | 1.0M | ▲New +1.0M sh | Q1 2026 | |
| 3 | AQR Arbitrage LLC | $7.6M | 758K | ▲New +758K sh | Q1 2026 | |
| 4 | TUDOR INVESTMENT CORP ET AL | $6.5M | 650K | ▲New +650K sh | Q1 2026 | |
| 5 | Lighthouse Investment Partners, LLC | $5.0M | 500K | ▲New +500K sh | Q1 2026 | |
| 6 | RIVERNORTH CAPITAL MANAGEMENT, LLC | $5.0M | 500K | ▲New +500K sh | Q1 2026 | |
| 7 | ARISTEIA CAPITAL, L.L.C. | $4.0M | 400K | ▲New +400K sh | Q1 2026 | |
| 8 | BlueCrest Capital Management Ltd | $2.8M | 275K | ▲New +275K sh | Q1 2026 | |
| 9 | Schonfeld Strategic Advisors LLC | $2.4M | 236K | ▲New +236K sh | Q1 2026 | |
| 10 | PICTON MAHONEY ASSET MANAGEMENT | $1.5M | 150K | ▲New +150K sh | Q1 2026 | |
| 11 | Calamos Advisors LLC | $1.2M | 124K | ▲New +124K sh | Q1 2026 | |
| 12 | BOOTHBAY FUND MANAGEMENT, LLC | $1.0M | 100K | ▲New +100K sh | Q1 2026 | |
| 13 | Westchester Capital Management, LLC | $998K | 100K | ▲New +100K sh | Q1 2026 | |
| 14 | Clear Street Group Inc. | $101K | 10K | ▲New +10K 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.
| Class | 13F holders | Value held |
|---|---|---|
| ARCIORD SHS | 28 funds | $119.4M |
| ARCIUthis pageUnit | 20 funds | $77.2M |
| G0453R113RT | 19 funds | $1.4M |
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 |
|---|---|---|
| WARNER BROS DISCOVERY INCWBD | 11 funds | $730.9M |
| CHART INDUSTRIES INCGTLS | 11 funds | $464.2M |
| MOUNTAIN LAKE ACQUISITION COMLAAU | 11 funds | $95.9M |
| IDEA ACQUISITION CORPIACOU | 11 funds | $66.5M |
| HCM IV ACQUISITION CORPHACQU | 11 funds | $60.4M |
| KRAKACQUISITION CORPKRAQU | 11 funds | $58.9M |
| LEGATO MERGER CORP IVLEGO/U | 11 funds | $49.2M |
| COLOMBIER ACQSTN CORP IIICLBR/U | 11 funds | $42.6M |
| SPARTACUS ACQU CORP IITMTSU | 11 funds | $38.0M |
| MOZAYYX ACQUISITION CORPMZYX/U | 11 funds | $37.1M |
| SPACE ASSET ACQUISITION CORPSAAQU | 11 funds | $36.2M |
| COHEN CIRCLE ACQUISIT II - ACCII | 11 funds | $31.3M |
Ranked by how many of ARCIU'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 ARCIU. 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.