23 tracked 13F filers disclose a position in ARCIU as of the latest SEC 13F filings, a combined $80.3M in reported value. 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.
| # | 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 | BNP PARIBAS FINANCIAL MARKETS | $4.9M | 492K | ▲New +492K sh | Q1 2026 | |
| 8 | COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS | $4.0M | 400K | ▲New +400K sh | Q1 2026 | |
| 9 | ARISTEIA CAPITAL, L.L.C. | $4.0M | 400K | ▲New +400K sh | Q1 2026 | |
| 10 | MILLENNIUM MANAGEMENT LLC | $3.5M | 350K | ▲New +350K sh | Q1 2026 | |
| 11 | BlueCrest Capital Management Ltd | $2.8M | 275K | ▲New +275K sh | Q1 2026 | |
| 12 | Lineage Point Capital LP | $2.8M | 275K | ▲New +275K sh | Q1 2026 | |
| 13 | TORONTO DOMINION BANK | $2.5M | 250K | ▲New +250K sh | Q1 2026 | |
| 14 | Schonfeld Strategic Advisors LLC | $2.4M | 236K | ▲New +236K sh | Q1 2026 | |
| 15 | Qube Research & Technologies Ltd | $1.5M | 150K | ▲New +150K sh | Q1 2026 | |
| 16 | PICTON MAHONEY ASSET MANAGEMENT | $1.5M | 150K | ▲New +150K sh | Q1 2026 | |
| 17 | Calamos Advisors LLC | $1.3M | 124K | —Held | Q2 2026 | |
| 18 | BOOTHBAY FUND MANAGEMENT, LLC | $1.0M | 100K | ▲New +100K sh | Q1 2026 | |
| 19 | Westchester Capital Management, LLC | $998K | 100K | ▲New +100K sh | Q1 2026 | |
| 20 | Stoic Point Capital Management LLC | $200K | 20K | ▲New +20K sh | Q1 2026 | |
| 21 | PRELUDE CAPITAL MANAGEMENT, LLC | $200K | 20K | ▲New +20K sh | Q1 2026 | |
| 22 | Tuttle Capital Management, LLC | $109K | 11K | ▲+7.7% Added · +769 sh | Q2 2026 | |
| 23 | 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.
Last quarter, 17 funds opened a new position in ARCIU and 1 added to an existing one, while 0 reduced and 0 exited entirely — based on 13F filings from active, signal-eligible managers (passive index funds and other mechanical holders are excluded from this count).
| Company | Co-held by | Combined value |
|---|---|---|
| LEGATO MERGER CORP IVLEGO/U | 16 funds | $59.3M |
| IDEA ACQUISITION CORPIACOU | 15 funds | $90.1M |
| CAMBRIDGE ACQUISITION CORPCAQUU | 15 funds | $49.0M |
| SPACE ASSET ACQUISITION CORPSAAQU | 15 funds | $41.7M |
| WARNER BROS DISCOVERY INCWBD | 14 funds | $2.4B |
| CHART INDUSTRIES INCGTLS | 14 funds | $825.1M |
| ABONY ACQUISITION CORP IAACOU | 14 funds | $55.8M |
| NORFOLK SOUTHERN CORPNSC | 13 funds | $2.3B |
| ELECTRONIC ARTS INCEA | 13 funds | $1.7B |
| HOLOGIC INCHO1 | 13 funds | $1.1B |
| AES CORPAES | 13 funds | $477.9M |
| MOUNTAIN LAKE ACQUISITION COMLAAU | 13 funds | $108.9M |
Ranked by how many of ARCIU's institutional holders also hold each name, a cross-fund conviction signal.
No open-market insider transactions on file yet. Grants, gifts, and exercises live on the full insider page.
No filings captured for this ticker in the live stream yet.
Connected entities for ARCIU
This stock page is the public Follow view. For one current, evidence-backed answer, use capital_change_brief through REST or MCP. It compares tracked 13F changes with qualifying Form 4 activity and cites the SEC evidence.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/stocks/ARCIU/capital-change-brief"
Use Arkolith's capital_change_brief for ARCIU. Tell me what changed, whether insider activity corroborates it, and cite the SEC evidence.
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.