Among active 13F managers last quarter, 3 opened and 6 added, while 8 reduced; the largest holder to move was AQR Arbitrage LLC (+0.6%). No open-market insider trades in the last 180 days.
No leg leans either way.
45 tracked 13F filers disclose a position in SDHI as of the latest SEC 13F filings, a combined $255.4M 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 | 1.8M | $18.2M | —Held | Q2 2026 | |
| 2 | Aristeia Capital, L.L.C. | 1.6M | $17.2M | —Held | Q2 2026 | |
| 3 | Tenor Capital Management Co., L.P. | 1.4M | $14.3M | —Held | Q2 2026 | |
| 4 | First Trust Capital Management L.P. | 1.3M | $13.6M | —Held | Q2 2026 | |
| 5 | AQR Arbitrage LLC | 1.3M | $13.1M | ▲+0.6% Added · +7K sh | Q2 2026 | |
| 6 | HGC Investment Management Inc. | 1.3M | $13.0M | —Held | Q2 2026 | |
| 7 | Westchester Capital Management, LLC | 1.2M | $13.0M | —Held | Q2 2026 | |
| 8 | Hudson Bay Capital Management LP | 1.0M | $10.7M | —Held | Q2 2026 | |
| 9 | Polar Asset Management Partners Inc. | 1.0M | $10.4M | ▲~0% Added · +200 sh | Q2 2026 | |
| 10 | Linden Advisors LP | 800K | $8.3M | —Held | Q1 2026 | |
| 11 | Calamos Advisors LLC | 750K | $7.8M | ▲New +750K sh | Q2 2026 | |
| 12 | Millennium Management LLC | 745K | $7.7M | ▼−12% Reduced · −102K sh | Q1 2026 | |
| 13 | Shaolin Capital Management LLC | 732K | $7.6M | ▼−10% Reduced · −83K sh | Q2 2026 | |
| 14 | Alberta Investment Management Corp | 700K | $7.3M | —Held | Q2 2026 | |
| 15 | Radcliffe Capital Management, L.P. | 694K | $7.2M | —Held | Q2 2026 | |
| 16 | D. E. Shaw & Co., Inc. | 662K | $6.9M | ▲+309% Added · +500K sh | Q1 2026 | |
| 17 | Meteora Capital, LLC | 602K | $6.3M | ▼−47% Reduced · −531K sh | Q2 2026 | |
| 18 | Verition Fund Management LLC | 566K | $5.9M | ▼−0.1% Reduced · −636 sh | Q2 2026 | |
| 19 | Picton Mahoney Asset Management | 500K | $5.2M | —Held | Q2 2026 | |
| 20 | Berkley W R Corp | 474K | $4.9M | ▲+111% Added · +249K sh | Q1 2026 | |
| 21 | Crossingbridge Advisors, LLC | 460K | $4.8M | ▲+130% Added · +260K sh | Q2 2026 | |
| 22 | Two Sigma Investments, LP | 416K | $4.3M | —Held | Q1 2026 | |
| 23 | Goldman Sachs Group Inc | 413K | $4.3M | ▲+0.1% Added · +247 sh | Q1 2026 | |
| 24 | Commonwealth Of Pennsylvania Public School Empls Retrmt Sys | 400K | $4.1M | —Held | Q1 2026 | |
| 25 | Rivernorth Capital Management, LLC | 355K | $3.7M | ▼~0% Reduced · −92 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, 3 funds opened a new position in SDHI and 6 added to an existing one, while 8 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 |
|---|---|---|
| Eqv Ventures Acquisition C-AEVAC | 30 funds | $243.5M |
| Soulpower Acquisition Co-ASOUL | 30 funds | $200.2M |
| Cantor Equity Partners-CL ACEPF | 29 funds | $179.7M |
| Republic Digital Acquis-CL ARDAG | 29 funds | $179.6M |
| Sizzle Acquisition Corp-CL ASZZL | 29 funds | $176.4M |
| Cal Redwood Acquisit-CL ACRAQ | 29 funds | $167.5M |
| Wen Acquisition Corp-AWENN | 29 funds | $163.8M |
| Blue Water Acquisition C-ABLUW | 29 funds | $155.4M |
| Cantor Equity Partners-CL ACEPV | 29 funds | $121.7M |
| Gores Holdings X Inc-CL AGTEN | 28 funds | $218.7M |
| Apex Treasury Corp-CL AAPXT | 28 funds | $200.2M |
| Oyster Enterprises II Acq-AOYSE | 28 funds | $173.0M |
Ranked by how many of SDHI's tracked holders also hold each name. The last column is those co-holders' combined reported position in that name, not in SDHI.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Apr 2, 2025 | Siddhi Sponsor LLC | 10% Owner | Buy (P) | 338K | — |
| Apr 2, 2025 | Finn Brian D | Director, 10% Owner | Buy (P) | 338K | — |
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 | 10 | 11 | – |
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 |
|---|---|---|
| SDHIthis pageEquity | 45 funds | $255.4M |
| SDHIRSPACS | 36 funds | $5.8M |
| SDHIUUNIT 99/99/9999 | 3 funds | $5.7M |
Same issuer, multiple share classes. The consensus leaderboards count this company once across all classes; this is the per-class detail.
Connected entities for SDHI
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/SDHI/capital-change-brief"
Use Arkolith's capital_change_brief for SDHI. 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 SDHI. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.