Among active 13F managers last quarter, 12 opened and 5 added, while 2 reduced; the largest holder to move was Adage Capital Partners GP, L.L.C. (new position). No recent Form 4 insider filings for ARCIW.
Funds lean in and no leg opposes.
34 tracked 13F filers disclose a position in ARCIW as of the latest SEC 13F filings, a combined $2.8M 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 | Adage Capital Partners GP, L.L.C. | 375K | $201K | ▲New +375K sh | Q1 2026 | |
| 2 | Centiva Capital, LP | 324K | $243K | ▲New +324K sh | Q2 2026 | |
| 3 | K2 Principal Fund, L.P. | 309K | $154K | ▲+9.6% Added · +27K sh | Q2 2026 | |
| 4 | Magnetar Financial LLC | 300K | $225K | —Held | Q2 2026 | |
| 5 | Linden Advisors LP | 300K | $160K | ▲New +300K sh | Q1 2026 | |
| 6 | Alberta Investment Management Corp | 250K | $188K | ▲New +250K sh | Q2 2026 | |
| 7 | Tenor Capital Management Co., L.P. | 250K | $188K | —Held | Q2 2026 | |
| 8 | Governors Lane LP | 250K | $156K | —Held | Q2 2026 | |
| 9 | AQR Arbitrage LLC | 189K | $142K | ▲New +189K sh | Q2 2026 | |
| 10 | Verition Fund Management LLC | 187K | $140K | ▼−0.2% Reduced · −300 sh | Q2 2026 | |
| 11 | Healthcare Of Ontario Pension Plan Trust Fund | 138K | $76K | ▲New +138K sh | Q1 2026 | |
| 12 | Polar Asset Management Partners Inc. | 129K | $97K | ▲+3.4% Added · +4K sh | Q2 2026 | |
| 13 | Moore Capital Management, LP | 125K | $94K | —Held | Q2 2026 | |
| 14 | Rivernorth Capital Management, LLC | 125K | $81K | ▲New +125K sh | Q2 2026 | |
| 15 | Shaolin Capital Management LLC | 115K | $86K | ▲+4.2% Added · +5K sh | Q2 2026 | |
| 16 | D. E. Shaw & Co., Inc. | 106K | $58K | ▲New +106K sh | Q1 2026 | |
| 17 | Periscope Capital Inc. | 101K | $63K | —Held | Q2 2026 | |
| 18 | Meteora Capital, LLC | 84K | $42K | ▼−32% Reduced · −40K sh | Q2 2026 | |
| 19 | Radcliffe Capital Management, L.P. | 81K | $51K | ▲+0.1% Added · +43 sh | Q2 2026 | |
| 20 | HBK Investments L P | 63K | $47K | —Held | Q2 2026 | |
| 21 | Clear Street Group Inc. | 55K | $41K | ▼−5.3% Reduced · −3K sh | Q2 2026 | |
| 22 | Parallax Volatility Advisers, L.P. | 50K | $38K | ▲New +50K sh | Q2 2026 | |
| 23 | 683 Capital Management, LLC | 50K | $38K | —Held | Q2 2026 | |
| 24 | DLD Asset Management, LP | 42K | $32K | —Held | Q2 2026 | |
| 25 | Wealthspring Capital LLC | 41K | $20K | ▲New +41K 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. 1 value row is withheld because the reported units disagree with same-security peers; share counts are unchanged.
Last quarter, 12 funds opened a new position in ARCIW and 5 added to an existing one, while 2 reduced. 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 |
|---|---|---|
| Archimedes Tech Spac PartnerARCI | 28 funds | $145.6M |
| Cantor Equity Partners-CL ACEPF | 27 funds | $156.1M |
| Cantor Equity Partners-CL ACEPV | 26 funds | $87.4M |
| Crane Harbor Acquisitio-CL ACRAN | 25 funds | $179.8M |
| Cal Redwood Acquisit-CL ACRAQ | 25 funds | $128.2M |
| Viking Acquisition Corp - AVACI | 25 funds | $125.6M |
| Spring Valley Acquisitio-ASVIV | 25 funds | $103.4M |
| Dynamix Corp III-CL ADNMX | 25 funds | $102.7M |
| Cal Redwood Acquisition CorpCRAQR | 25 funds | $3.8M |
| Eqv Ventures Acquisition CorEVAC/WS | 25 funds | $2.6M |
| Dynamix Corp IIIDNMXW | 25 funds | $1.6M |
| M3-Brigade Acquisition-CL AMBVI | 24 funds | $153.3M |
Ranked by how many of ARCIW's tracked holders also hold each name. The last column is those co-holders' combined reported position in that name, not in ARCIW.
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 | 5 | 3 | – |
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 |
| ARCIWthis pageWarrant | 34 funds | $3.0M |
| ARCIUUnit | 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 ARCIW
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/ARCIW/capital-change-brief"
Use Arkolith's capital_change_brief for ARCIW. Tell me what changed, whether insider activity corroborates it, and cite the SEC evidence.
13F holdings + Form 4 insider transactions + the live filing stream, joined for ARCIW. Filings are public domain, sourced to SEC EDGAR.