Among active 13F managers last quarter, 22 opened and none reduced or exited; the largest holder to move was Magnetar Financial LLC (new position). No open-market insider trades in the last 180 days.
Funds lean in and no leg opposes.
24 tracked 13F filers disclose a position in SUMA as of the latest SEC 13F filings, a combined $90.5M 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 | Magnetar Financial LLC | 1.5M | $14.7M | ▲New +1.5M sh | Q2 2026 | |
| 2 | Alberta Investment Management Corp | 1.4M | $14.3M | ▲New +1.4M sh | Q2 2026 | |
| 3 | Polar Asset Management Partners Inc. | 1.3M | $12.9M | ▲New +1.3M sh | Q2 2026 | |
| 4 | Highbridge Capital Management LLC | 734K | $7.3M | ▲New +734K sh | Q2 2026 | |
| 5 | Context Capital Management, LLC | 500K | $4.9M | ▲New +500K sh | Q2 2026 | |
| 6 | Centiva Capital, LP | 500K | $4.9M | ▲New +500K sh | Q2 2026 | |
| 7 | Rivernorth Capital Management, LLC | 499K | $5.0M | ▲New +499K sh | Q2 2026 | |
| 8 | Wealthspring Capital LLC | 485K | $4.8M | ▲New +485K sh | Q2 2026 | |
| 9 | Mangrove Partners Im, LLC | 450K | $4.5M | ▲New +450K sh | Q2 2026 | |
| 10 | Radcliffe Capital Management, L.P. | 283K | $2.8M | ▲New +283K sh | Q2 2026 | |
| 11 | K2 Principal Fund, L.P. | 198K | $2.0M | ▲New +198K sh | Q2 2026 | |
| 12 | Periscope Capital Inc. | 185K | $1.8M | ▲New +185K sh | Q2 2026 | |
| 13 | AQR Arbitrage LLC | 176K | $1.7M | ▲New +176K sh | Q2 2026 | |
| 14 | Shaolin Capital Management LLC | 156K | $1.5M | ▲New +156K sh | Q2 2026 | |
| 15 | Picton Mahoney Asset Management | 150K | $1.5M | ▲New +150K sh | Q2 2026 | |
| 16 | Moore Capital Management, LP | 150K | $1.5M | ▲New +150K sh | Q2 2026 | |
| 17 | Deltec Asset Management LLC | 150K | $1.5M | ▲New +150K sh | Q2 2026 | |
| 18 | Whitebox Advisors LLC | 100K | $989K | ▲New +100K sh | Q2 2026 | |
| 19 | DLD Asset Management, LP | 100K | $989K | ▲New +100K sh | Q2 2026 | |
| 20 | Clear Street Group Inc. | 50K | $491K | ▲New +50K sh | Q2 2026 | |
| 21 | Heights Capital Management, Inc | 30K | $296K | ▲New +30K sh | Q2 2026 | |
| 22 | TrueMark Investments, LLC | 14K | $142K | ▲New +14K sh | Q2 2026 | |
| 23 | StoneX Group Inc. | 10K | $99K | ▲New +10K sh | Q2 2026 | |
| 24 | ExodusPoint Capital Management, LP | 501 | $5K | ▲New +501 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, 22 funds opened a new position in SUMA, 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 |
|---|---|---|
| Crane Harbor Acquisitio-CL ACRAN | 19 funds | $89.6M |
| Axiom Intelligence-CL AAXIN | 19 funds | $78.8M |
| Suma Acquisition Corp-RSUMAR | 19 funds | $2.0M |
| Evolution Global AcquisitionEVOXW | 19 funds | $1.3M |
| Eqv Ventures Acquisition C-AEVAC | 18 funds | $121.2M |
| New Providence Acquisition-ANPAC | 18 funds | $95.2M |
| Cantor Equity Partners-CL ACEPF | 18 funds | $79.2M |
| Archimedes Tech Spac PartnerARCI | 18 funds | $72.7M |
| Activate Energy Acquisitio-AAEAQ | 18 funds | $66.2M |
| Cantor Equity Partners VII-ACAES | 18 funds | $64.5M |
| Solarius Capital Acquis-CL ASOCA | 18 funds | $56.6M |
| Idea Acquisition Corp-30IACOW | 18 funds | $912K |
Ranked by how many of SUMA's tracked holders also hold each name. The last column is those co-holders' combined reported position in that name, not in SUMA.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Mar 12, 2026 | SUMA Management Corp | 10% Owner | Buy (P) | 317K | $3.2M |
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 |
|---|---|---|
| SUMAthis pageUSD CL A ORD SHS | 24 funds | $90.5M |
| SUMARRIGHT 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.
Connected entities for SUMA
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/SUMA/capital-change-brief"
Use Arkolith's capital_change_brief for SUMA. 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 SUMA. Filings are public domain, sourced to SEC EDGAR.