HDSN Hudson Technologies Inc.
Hudson Technologies Inc. (HDSN) Institutional Ownership
What the institutions did with HDSN last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| Hartree Partners, LP | 4.4M | 14.0% |
| WESTERLY CAPITAL MANAGEMENT, LLC | 3.4M | 10.7% |
| BlackRock, Inc. | 2.8M | 9.0% |
| DIMENSIONAL FUND ADVISORS LP | 2.0M | 6.2% |
| VANGUARD CAPITAL MANAGEMENT LLC | 1.7M | 5.2% |
| RENAISSANCE TECHNOLOGIES LLC | 1.4M | 4.6% |
| AMERICAN CENTURY COMPANIES INC | 1.2M | 3.7% |
| GEODE CAPITAL MANAGEMENT, LLC | 995.0K | 3.1% |
| STATE STREET CORP | 895.8K | 2.8% |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 778.0K | 2.5% |
| CASPIAN CAPITAL LP | 728.3K | 2.3% |
| Qube Research & Technologies Ltd | 721.8K | 2.3% |
| CITADEL ADVISORS LLC | 574.3K | 1.8% |
| JACOBS LEVY EQUITY MANAGEMENT, INC | 506.6K | 1.6% |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | 494.4K | 1.6% |
| Nuveen, LLC | 476.5K | 1.5% |
| MARSHALL WACE, LLP | 474.4K | 1.5% |
| D. E. Shaw & Co., Inc. | 409.6K | 1.3% |
| MORGAN STANLEY | 367.2K | 1.2% |
| Russell Investments Group, Ltd. | 362.5K | 1.1% |
| 683 Capital Management, LLC | 325.0K | 1.0% |
| JB CAPITAL PARTNERS LP | 306.2K | 1.0% |
| Ancora Advisors LLC | 303.4K | 1.0% |
| Kerrisdale Advisers, LLC | 300.0K | 0.9% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 290.5K | 0.9% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| NEW SOUTH CAPITAL MANAGEMENT INC | Sold Out | 1.2M | 0 | -1.2M |
| SEGALL BRYANT & HAMILL, LLC | Sold Out | 628.3K | 0 | -628.3K |
| Hartree Partners, LP | Increased | 3.8M | 4.4M | +611.9K |
| Nuveen, LLC | Increased | 83.7K | 476.5K | +392.8K |
| PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO | Reduced | 410.1K | 51.5K | -358.6K |
| Qube Research & Technologies Ltd | Increased | 370.9K | 721.8K | +351.0K |
| JACOBS LEVY EQUITY MANAGEMENT, INC | Increased | 178.9K | 506.6K | +327.7K |
| LAZARD ASSET MANAGEMENT LLC | Sold Out | 325.9K | 0 | -325.9K |
| AMERICAN CENTURY COMPANIES INC | Reduced | 1.5M | 1.2M | -318.3K |
| Ancora Advisors LLC | New | 0 | 303.4K | +303.4K |
| MARSHALL WACE, LLP | Increased | 219.3K | 474.4K | +255.1K |
| Kerrisdale Advisers, LLC | Increased | 57.6K | 300.0K | +242.4K |
| Russell Investments Group, Ltd. | Increased | 154.4K | 362.5K | +208.1K |
| WESTERLY CAPITAL MANAGEMENT, LLC | Increased | 3.2M | 3.4M | +205.0K |
| AQR CAPITAL MANAGEMENT LLC | Reduced | 344.3K | 161.9K | -182.4K |
| DIMENSIONAL FUND ADVISORS LP | Reduced | 2.1M | 2.0M | -180.4K |
| O'SHAUGHNESSY ASSET MANAGEMENT, LLC | Sold Out | 170.8K | 0 | -170.8K |
| CITADEL ADVISORS LLC | Increased | 412.8K | 574.3K | +161.5K |
| GRIMES & Co WEALTH MANAGEMENT, LLC | Sold Out | 158.6K | 0 | -158.6K |
| TWO SIGMA INVESTMENTS, LP | Reduced | 272.9K | 132.0K | -141.0K |
| NORTHERN TRUST CORP | Reduced | 399.4K | 282.0K | -117.4K |
| MORGAN STANLEY | Reduced | 471.9K | 367.2K | -104.8K |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | Reduced | 881.2K | 778.0K | -103.2K |
| ZAZOVE ASSOCIATES LLC | Sold Out | 100.0K | 0 | -100.0K |
| EdgeRock Capital LLC | Sold Out | 90.5K | 0 | -90.5K |
| KBC Group NV | Increased | 123.0K | 207.5K | +84.5K |
| MACKENZIE FINANCIAL CORP | Sold Out | 82.3K | 0 | -82.3K |
| Bank of New York Mellon Corp | Reduced | 282.4K | 204.8K | -77.7K |
| STRS OHIO | Sold Out | 77.1K | 0 | -77.1K |
| MILLENNIUM MANAGEMENT LLC | Sold Out | 72.7K | 0 | -72.7K |
| JANE STREET GROUP, LLC | Sold Out | 69.9K | 0 | -69.9K |
| Jump Financial, LLC | Reduced | 90.6K | 27.9K | -62.7K |
| RENAISSANCE TECHNOLOGIES LLC | Reduced | 1.5M | 1.4M | -62.1K |
| VOYA INVESTMENT MANAGEMENT LLC | Sold Out | 60.9K | 0 | -60.9K |
| WINTON GROUP Ltd | Sold Out | 58.5K | 0 | -58.5K |
| BAILARD, INC. | New | 0 | 56.6K | +56.6K |
| STATE OF WISCONSIN INVESTMENT BOARD | Reduced | 80.7K | 29.6K | -51.1K |
| D. E. Shaw & Co., Inc. | Increased | 358.7K | 409.6K | +50.9K |
| Odyssean, LLC | New | 0 | 50.7K | +50.7K |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 948.5K | 995.0K | +46.5K |
| Sanctuary Advisors, LLC | New | 0 | 46.3K | +46.3K |
| Point72 Asset Management, L.P. | New | 0 | 45.7K | +45.7K |
| BANK OF AMERICA CORP /DE/ | Reduced | 102.3K | 57.9K | -44.4K |
| AMERIPRISE FINANCIAL INC | Increased | 57.1K | 98.4K | +41.3K |
| Squarepoint Ops LLC | Increased | 26.0K | 66.2K | +40.2K |
| FOX RUN MANAGEMENT, L.L.C. | Sold Out | 39.4K | 0 | -39.4K |
| EntryPoint Capital, LLC | New | 0 | 33.5K | +33.5K |
| ExodusPoint Capital Management, LP | Sold Out | 31.1K | 0 | -31.1K |
| Inspire Investing, LLC | Increased | 88.1K | 119.2K | +31.1K |
| Quantinno Capital Management LP | Increased | 76.3K | 107.0K | +30.7K |
| Campbell & CO Investment Adviser LLC | Reduced | 61.4K | 33.0K | -28.4K |
| Pacific Ridge Capital Partners, LLC | Increased | 146.9K | 174.5K | +27.6K |
| Park Capital Management, LLC / WI | New | 0 | 27.1K | +27.1K |
| Numerai GP LLC | Reduced | 177.3K | 150.3K | -27.0K |
| MIRABELLA FINANCIAL SERVICES LLP | Sold Out | 24.7K | 0 | -24.7K |
| JPMORGAN CHASE & CO | Reduced | 117.5K | 93.7K | -23.8K |
| FRANKLIN RESOURCES INC | Sold Out | 22.6K | 0 | -22.6K |
| BlackRock, Inc. | Reduced | 2.9M | 2.8M | -22.3K |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Increased | 268.5K | 290.5K | +22.0K |
| Boston Partners | Reduced | 40.0K | 18.2K | -21.8K |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.