Among active 13F managers last quarter, 19 opened and none reduced or exited; the largest holder to move was Magnetar Financial LLC (new position). No recent Form 4 insider filings for SUMAR.
Funds lean in and no leg opposes.
22 tracked 13F filers disclose a position in SUMAR as of the latest SEC 13F filings, a combined $2.4M 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 | Magnetar Financial LLC | 1.5M | $422K | ▲New +1.5M sh | Q2 2026 | |
| 2 | Polar Asset Management Partners Inc. | 1.3M | $370K | ▲New +1.3M sh | Q2 2026 | |
| 3 | Centiva Capital, LP | 1.0M | $280K | ▲New +1.0M sh | Q2 2026 | |
| 4 | Highbridge Capital Management LLC | 762K | $213K | ▲New +762K sh | Q2 2026 | |
| 5 | Context Capital Management, LLC | 500K | $140K | ▲New +500K sh | Q2 2026 | |
| 6 | Rivernorth Capital Management, LLC | 500K | $123K | ▲New +500K sh | Q2 2026 | |
| 7 | Wealthspring Capital LLC | 485K | $131K | ▲New +485K sh | Q2 2026 | |
| 8 | Mangrove Partners Im, LLC | 450K | $126K | ▲New +450K sh | Q2 2026 | |
| 9 | Parallax Volatility Advisers, L.P. | 362K | $103K | ▲New +362K sh | Q2 2026 | |
| 10 | Radcliffe Capital Management, L.P. | 276K | $78K | ▲New +276K sh | Q2 2026 | |
| 11 | DLD Asset Management, LP | 250K | $75K | ▲New +250K sh | Q2 2026 | |
| 12 | ExodusPoint Capital Management, LP | 200K | $56K | ▲New +200K sh | Q2 2026 | |
| 13 | K2 Principal Fund, L.P. | 200K | $54K | ▲New +200K sh | Q2 2026 | |
| 14 | Shaolin Capital Management LLC | 182K | $51K | ▲New +182K sh | Q2 2026 | |
| 15 | AQR Arbitrage LLC | 176K | $49K | ▲New +176K sh | Q2 2026 | |
| 16 | Picton Mahoney Asset Management | 150K | $42K | ▲New +150K sh | Q2 2026 | |
| 17 | Moore Capital Management, LP | 150K | $42K | ▲New +150K sh | Q2 2026 | |
| 18 | Whitebox Advisors LLC | 100K | $28K | ▲New +100K sh | Q2 2026 | |
| 19 | Periscope Capital Inc. | 40K | $11K | ▲New +40K sh | Q2 2026 | |
| 20 | Clear Street Group Inc. | 39K | $11K | ▲New +39K sh | Q2 2026 | |
| 21 | Heights Capital Management, Inc | 30K | $8K | ▲New +30K sh | Q2 2026 | |
| 22 | TrueMark Investments, LLC | 15K | $4K | ▲New +15K 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, 19 funds opened a new position in SUMAR, 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 |
|---|---|---|
| Suma Acquisition Corp-ASUMA | 19 funds | $69.2M |
| Evolution Global AcquisitionEVOXW | 17 funds | $1.2M |
| Crane Harbor Acquisitio-CL ACRAN | 16 funds | $81.5M |
| New Providence Acquisition-ANPAC | 16 funds | $81.4M |
| Axiom Intelligence-CL AAXIN | 16 funds | $71.9M |
| Cantor Equity Partners-CL ACEPF | 16 funds | $71.3M |
| Oxley Bridge Acquisitio-CL AOBA | 16 funds | $69.2M |
| Cantor Equity Partners VII-ACAES | 16 funds | $60.2M |
| Activate Energy Acquisitio-AAEAQ | 16 funds | $59.9M |
| Invest Green Acquisitio-CL AIGAC | 16 funds | $52.4M |
| Solarius Capital Acquis-CL ASOCA | 16 funds | $51.0M |
| Invest Green Acquisition-RTSIGACR | 16 funds | $1.0M |
Ranked by how many of SUMAR's tracked holders also hold each name. The last column is those co-holders' combined reported position in that name, not in SUMAR.
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 | 0 | 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 |
|---|---|---|
| SUMAUSD CL A ORD SHS | 24 funds | $90.5M |
| SUMARthis pageRIGHT 03/05/2031 | 22 funds | $2.4M |
| SUMAUUnit | 15 funds | $48.0M |
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 SUMAR
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/SUMAR/capital-change-brief"
Use Arkolith's capital_change_brief for SUMAR. 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 SUMAR. Filings are public domain, sourced to SEC EDGAR.