Among active 13F managers last quarter, 16 opened and 21 added, while 15 reduced; the largest holder to move was Hartree Partners, LP (+16%). Over the last 180 days, 9 insiders bought and none sold, a net +$6.0M in open-market trades.
Funds lean in and no leg opposes.
152 tracked 13F filers disclose a position in HDSN as of the latest SEC 13F filings, a combined $185.1M 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 | Hartree Partners, LP | 4.4M | $25.3M | ▲+16% Added · +612K sh | Q2 2026 | |
| 2 | Westerly Capital Management, LLC | 3.4M | $19.4M | ▲+6.5% Added · +205K sh | Q2 2026 | |
| 3 | BlackRock, Inc. | 2.9M | $16.8M | ▼−1.8% Reduced · −51K sh | Q1 2026 | |
| 4 | Dimensional Fund Advisors LP | 2.1M | $12.6M | ▲+5.1% Added · +105K sh | Q1 2026 | |
| 5 | Vanguard Capital Management LLC | 1.7M | $9.8M | →New filer Inherited book · not a new buyer | Q1 2026 | |
| 6 | Renaissance Technologies LLC | 1.5M | $8.8M | ▼−11% Reduced · −193K sh | Q1 2026 | |
| 7 | American Century Companies Inc | 1.5M | $8.7M | ▲+7.3% Added · +101K sh | Q1 2026 | |
| 8 | Geode Capital Management, LLC | 995K | $5.7M | ▲+4.9% Added · +46K sh | Q2 2026 | |
| 9 | State Street Corp | 896K | $5.1M | ▼−0.2% Reduced · −2K sh | Q2 2026 | |
| 10 | Arrowstreet Capital, Limited Partnership | 881K | $5.2M | ▼−10% Reduced · −102K sh | Q1 2026 | |
| 11 | Caspian Capital LP | 728K | $4.3M | —Held | Q1 2026 | |
| 12 | Citadel Advisors LLC | 574K | $3.3M | ▲+39% Added · +162K sh | Q2 2026 | |
| 13 | Bridgeway Capital Management, LLC | 498K | $2.9M | ▲+32% Added · +120K sh | Q1 2026 | |
| 14 | Morgan Stanley | 472K | $2.8M | ▼−33% Reduced · −234K sh | Q1 2026 | |
| 15 | Northern Trust Corp | 399K | $2.3M | ▲+1.9% Added · +7K sh | Q1 2026 | |
| 16 | Qube Research & Technologies Ltd | 371K | $2.2M | ▲+127% Added · +207K sh | Q1 2026 | |
| 17 | D. E. Shaw & Co., Inc. | 359K | $2.1M | ▼−38% Reduced · −224K sh | Q1 2026 | |
| 18 | AQR Capital Management LLC | 344K | $2.0M | ▲+1.4% Added · +5K sh | Q1 2026 | |
| 19 | Lazard Asset Management LLC | 326K | $1.9M | ▼−25% Reduced · −106K sh | Q1 2026 | |
| 20 | 683 Capital Management, LLC | 325K | $1.9M | —Held | Q2 2026 | |
| 21 | JB Capital Partners LP | 306K | $1.8M | —Held | Q2 2026 | |
| 22 | Ancora Advisors LLC | 303K | $1.7M | ▲New +303K sh | Q2 2026 | |
| 23 | Kerrisdale Advisers, LLC | 300K | $1.7M | ▲+421% Added · +242K sh | Q2 2026 | |
| 24 | Bank of New York Mellon Corp | 282K | $1.7M | ▼−13% Reduced · −43K sh | Q1 2026 | |
| 25 | Two Sigma Investments, LP | 273K | $1.6M | ▲+102% Added · +138K sh | Q1 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, 16 funds opened a new position in HDSN and 21 added to an existing one, while 15 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 |
|---|---|---|
| Microsoft CorpMSFT | 75 funds | $154.5B |
| Amazon.com IncAMZN | 74 funds | $110.3B |
| Alphabet Inc-CL AGOOGL | 74 funds | $88.4B |
| Nvidia CorpNVDA | 73 funds | $219.5B |
| Eli Lilly & CoLLY | 73 funds | $43.0B |
| Visa Inc-Class A SharesV | 73 funds | $34.8B |
| Apple IncAAPL | 71 funds | $168.3B |
| Broadcom IncAVGO | 71 funds | $92.9B |
| JPMorgan Chase & CoJPM | 71 funds | $36.2B |
| Micron Technology IncMU | 71 funds | $22.6B |
| Berkshire Hathaway Inc-CL BBRK/B | 71 funds | $21.1B |
| Meta Platforms Inc-Class AMETA | 70 funds | $62.2B |
Ranked by how many of HDSN's tracked holders also hold each name. The last column is those co-holders' combined reported position in that name, not in HDSN.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Sep 2, 2026 | Hartree Partners, LP | 10% Owner | Buy (P) | 5K | $27K |
| Aug 25, 2026 | Hartree Partners, LP | 10% Owner | Buy (P) | 91K | $501K |
| Aug 24, 2026 | Hartree Partners, LP | 10% Owner | Buy (P) | 9K | $52K |
| Aug 12, 2026 | Hartree Partners, LP | 10% Owner | Buy (P) | 5K | $29K |
| Jul 29, 2026 | Hartree Partners, LP | 10% Owner | Buy (P) | 52K | $312K |
| Jul 21, 2026 | Hartree Partners, LP | 10% Owner | Buy (P) | 48K | $286K |
| Jul 20, 2026 | Hartree Partners, LP | 10% Owner | Buy (P) | 18K | $107K |
| Jul 7, 2026 | Hartree Partners, LP | 10% Owner | Buy (P) | 600 | $4K |
| Jul 6, 2026 | Hartree Partners, LP | 10% Owner | Buy (P) | 5K | $28K |
| Jul 2, 2026 | Hartree Partners, LP | 10% Owner | Buy (P) | 271K | $1.6M |
| Jul 1, 2026 | Hartree Partners, LP | 10% Owner | Buy (P) | 288K | $1.7M |
| Jun 30, 2026 | Hartree Partners, LP | 10% Owner | Buy (P) | 205K | $1.2M |
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 | 33 | 33 | – |
Insiders Form 4 open-market | 9 | 0 | +$6.0M |
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.
Connected entities for HDSN
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/HDSN/capital-change-brief"
Use Arkolith's capital_change_brief for HDSN. 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 HDSN. Filings are public domain, sourced to SEC EDGAR.