Among active 13F managers last quarter, 2 opened and 3 added, while none reduced or exited; the largest holder to move was Aristeia Capital, L.L.C. (+0.2%). No recent Form 4 insider filings for ARCIU.
Funds lean in and no leg opposes.
14 tracked 13F filers disclose a position in ARCIU as of the latest SEC 13F filings, a combined $48.5M 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 | Shares | Position value | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | LMR Partners LLP | 1.3M | $12.7M | —Held | Q2 2026 | |
| 2 | Tudor Investment Corp Et Al | 650K | $6.6M | —Held | Q2 2026 | |
| 3 | BNP Paribas Financial Markets | 492K | $4.9M | ▲New +492K sh | Q1 2026 | |
| 4 | Aristeia Capital, L.L.C. | 401K | $4.1M | ▲+0.2% Added · +989 sh | Q2 2026 | |
| 5 | Commonwealth Of Pennsylvania Public School Empls Retrmt Sys | 400K | $4.0M | ▲New +400K sh | Q1 2026 | |
| 6 | Millennium Management LLC | 350K | $3.5M | ▲New +350K sh | Q1 2026 | |
| 7 | Lineage Point Capital LP | 289K | $3.0M | ▲+5.0% Added · +14K sh | Q2 2026 | |
| 8 | BlueCrest Capital Management Ltd | 275K | $2.8M | —Held | Q2 2026 | |
| 9 | Toronto Dominion Bank | 250K | $2.5M | ▲New +250K sh | Q1 2026 | |
| 10 | Qube Research & Technologies Ltd | 150K | $1.5M | ▲New +150K sh | Q1 2026 | |
| 11 | Calamos Advisors LLC | 124K | $1.3M | —Held | Q2 2026 | |
| 12 | Westchester Capital Management, LLC | 100K | $1.0M | —Held | Q2 2026 | |
| 13 | Clear Street Group Inc. | 34K | $349K | ▲+240% Added · +24K sh | Q2 2026 | |
| 14 | Tuttle Capital Management, LLC | 11K | $109K | ▲+7.7% Added · +769 sh | Q2 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, 2 funds opened a new position in ARCIU and 3 added to an existing one, while none reduced or exited. 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 | Their position there |
|---|---|---|
| Aldabra 4 Liquidity OpportunALOVU | 8 funds | $42.2M |
| Spartacus Acqu Corp IITMTSU | 8 funds | $29.4M |
| Legato Merger Corp IVLEGO/U | 8 funds | $29.0M |
| Space Asset Acquisition CorpSAAQU | 8 funds | $22.7M |
| Nvidia CorpNVDA | 7 funds | $4.3B |
| Amazon.com IncAMZN | 7 funds | $2.4B |
| Warner Bros Discovery IncWBD | 7 funds | $2.4B |
| Micron Technology IncMU | 7 funds | $2.1B |
| Alphabet Inc-CL AGOOGL | 7 funds | $2.0B |
| Alphabet Inc-CL CGOOG | 7 funds | $1.5B |
| JPMorgan Chase & CoJPM | 7 funds | $1.3B |
| Morgan StanleyMS | 7 funds | $988.9M |
Ranked by how many of ARCIU's tracked holders also hold each name. The last column is those co-holders' combined reported position in that name, not in ARCIU.
No open-market insider transactions on file yet. Grants, gifts, and exercises live on the full insider page.
Where institutional funds (13F), corporate insiders (Form 4) and US House members (STOCK Act) are buying or selling the same name in the same window. Green is buying, red is selling.
Insiders and Congress: last 180 days. Funds: latest 13F, top 100 holders incl. passive
| Source | Buying | Selling | Net |
|---|---|---|---|
13F funds Top 100 holders by value, passive included; the hero counts active managers only | 4 | 0 | – |
Insiders Form 4 open-market | 0 | 0 | $0 |
US House STOCK Act trades | 0 | 0 | $0 |
Capital Rotation reports where institutional capital disclosed rotating, as of the latest public SEC 13F filings. It is data, not investment advice, a recommendation, or a prediction. Filings lag about 45 days and cover long US equity positions only. Past disclosed flows do not indicate future prices. Do your own research; consult a licensed advisor.
| Class | 13F holders | Value held |
|---|---|---|
| ARCIORD SHS | 44 funds | $172.3M |
| ARCIWWarrant | 34 funds | $3.0M |
| ARCIUthis pageUnit | 14 funds | $48.5M |
Same issuer, multiple share classes. The consensus leaderboards count this company once across all classes; this is the per-class detail.
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.