Hudson TechnologiesHDSN
13F holders, Q4 2025 (December 31)168holders −2
23new positions
25sold out
7famous investors
$6.87avg. 13F price*
At the end of Q4 2025, 168 institutions reported holding Hudson Technologies Inc. (HDSN) in their 13F filings, down 2 from Q3 2025. 23 opened new positions and 25 sold out. The largest holders were Hartree Partners, LP ($26.0M), BlackRock, Inc. ($20.0M) and Westerly Capital Management, LLC ($17.5M). 7 famous investors held it, including Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio), David E. Shaw (0.0% of D. E. Shaw & Co.'s portfolio) and Steve Cohen (0.0% of Point72 Asset Management's portfolio).
- Company
- Hudson Technologies Inc.
- CUSIP
- 444144109
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q3 2025 → Q4 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 23 | $5.5M |
| Exits | 25 | $7.1M |
All 13F filers, Q3 2025 → Q4 2025: 2,733,080 shares bought and 3,561,148 shares sold, net −828,068 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 168 holders
| Hartree Partners, LP | 9.51% | No change | 3,800,000 | $26.0M |
| BlackRock, Inc. | 0.00% | Add +1.8% | 2,913,869 | $20.0M |
| Westerly Capital Management, LLC | 5.25% | Add +34.9% | 2,550,000 | $17.5M |
| Vanguard Group Inc. | 0.00% | Reduce -1.4% | 2,338,710 | $16.0M |
| Dimensional Fund Advisors LP | 0.00% | Add +1.7% | 2,043,151 | $14.0M |
| Renaissance Technologies | 0.02% | Reduce -5.5% | 1,697,250 | $11.6M |
| American Century Companies Inc. | 0.00% | Add +8.8% | 1,386,683 | $9.5M |
| New South Capital Management Inc. | 0.40% | Reduce -3.8% | 1,283,528 | $8.8M |
| Arrowstreet Capital, Limited Partnership | 0.00% | Reduce -11.6% | 982,819 | $6.7M |
| Geode Capital Management, LLC | 0.00% | Reduce -1.2% | 943,154 | $6.5M |
| State Street Corp. | 0.00% | Add +0.0% | 894,064 | $6.1M |
| Caspian Capital LP | 3.30% | — | 728,306 | $5.0M |
| Morgan Stanley | 0.00% | Reduce -11.0% | 705,577 | $4.8M |
| D. E. Shaw & Co. | 0.00% | Reduce -29.1% | 582,780 | $4.0M |
| Marshall Wace, LLP | 0.00% | Add +270.4% | 465,130 | $3.2M |
| Lazard Asset Management LLC | 0.01% | Add +65.5% | 431,769 | $3.0M |
| Public Employees Retirement System of Ohio | 0.01% | No change | 410,099 | $2.8M |
| Northern Trust Corp. | 0.00% | Reduce -5.9% | 391,889 | $2.7M |
| Bridgeway Capital Management, LLC | 0.05% | Add +4.9% | 378,255 | $2.6M |
| AQR Capital Management | 0.00% | Reduce -1.7% | 339,352 | $2.3M |
| 683 Capital Management, LLC | 0.20% | Reduce -4.3% | 335,000 | $2.3M |
| Bank of New York Mellon Corp | 0.00% | Reduce -3.8% | 325,707 | $2.2M |
| JB Capital Partners LP | 0.36% | No change | 306,200 | $2.1M |
| Los Angeles Capital Management LLC | 0.01% | Reduce -4.3% | 221,182 | $2.0M |
| Acadian Asset Management LLC | 0.00% | Add +4.1% | 220,612 | $1.5M |
| Kestrel Investment Management Corp. | 0.78% | Reduce -3.4% | 201,750 | $1.4M |
| Goldman Sachs Group Inc. | 0.00% | Add +15.5% | 189,896 | $1.3M |
| Millennium Management | 0.00% | Reduce -46.9% | 189,061 | $1.3M |
| Segall Bryant & Hamill, LLC | 0.02% | New | 180,354 | $1.2M |
| Marathon Capital Management | 0.26% | Reduce -9.8% | 175,325 | $1.2M |
| O'shaughnessy Asset Management, LLC | 0.01% | Reduce -2.9% | 170,826 | $1.2M |
| Two Sigma Advisers, LP | 0.00% | Reduce -26.5% | 167,300 | $1.1M |
| Qube Research & Technologies Ltd | 0.00% | Add +84.6% | 163,703 | $1.1M |
| Jacobs Levy Equity Management, Inc. | 0.00% | Reduce -28.4% | 159,728 | $1.1M |
| Wedge Capital Management L L P | 0.02% | Reduce -1.1% | 153,364 | $1.1M |
| First Trust Advisors LP | 0.00% | Add +3.0% | 141,978 | $973K |
| Credit Agricole S A | 0.00% | New | 140,000 | $959K |
| Russell Investments Group, Ltd. | 0.00% | Reduce -7.3% | 138,687 | $950K |
| UBS Group AG | 0.00% | Add +1.7% | 136,088 | $932K |
| Two Sigma Investments, LP | 0.00% | Reduce -28.8% | 135,400 | $927K |
| JPMorgan Chase & Co. | 0.00% | Reduce -10.7% | 127,571 | $874K |
| KBC Group NV | 0.00% | New | 123,001 | $843K |
| Quantinno Capital Management LP | 0.00% | Add +120.4% | 121,947 | $835K |
| Pacific Ridge Capital Partners, LLC | 0.18% | Add +14.3% | 118,406 | $811K |
| Charles Schwab Investment Management Inc. | 0.00% | Add +0.4% | 115,316 | $790K |
| Point72 Asset Management | 0.00% | Add +2534.0% | 113,263 | $776K |
| State of Wisconsin Investment Board | 0.00% | Add +37.0% | 99,764 | $683K |
| Invesco Ltd. | 0.00% | Add +23.3% | 97,108 | $665K |
| Jane Street Group, LLC | 0.00% | Reduce -36.0% | 91,216 | $625K |
| EdgeRock Capital LLC | 0.17% | Add +6.1% | 90,517 | $620K |
| Bank of America Corp. | 0.00% | Reduce -70.1% | 83,404 | $571K |
| Nuveen, LLC | 0.00% | No change | 83,140 | $570K |
| Citadel Advisors | 0.00% | Reduce -30.0% | 80,083 | $549K |
| Franklin Resources Inc. | 0.00% | Reduce -26.2% | 77,522 | $531K |
| STRS Ohio | 0.00% | Add +29.4% | 77,100 | $528K |
| T. Rowe Price Associates Inc. | 0.00% | No change | 73,706 | $505K |
| Ameriprise Financial Inc. | 0.00% | Add +3.3% | 71,167 | $487K |
| Pinnacle Associates Ltd. | 0.01% | No change | 70,000 | $480K |
| Prudential Financial Inc. | 0.00% | New | 69,970 | $479K |
| Inspire Investing, LLC | 0.04% | Add +47.7% | 68,583 | $470K |
| Barclays PLC | 0.00% | Add +12.3% | 67,991 | $466K |
| Aviva PLC | 0.00% | Add +42.5% | 67,703 | $464K |
| Voya Investment Management LLC | 0.00% | Add +1.8% | 61,273 | $420K |
| Trexquant Investment LP | 0.00% | Reduce -71.8% | 59,580 | $408K |
| Principal Financial Group Inc. | 0.00% | Add +44.7% | 59,073 | $405K |
| Kerrisdale Advisers, LLC | 0.19% | Reduce -10.1% | 57,622 | $395K |
| Deutsche Bank AG | 0.00% | Reduce -14.8% | 53,225 | $365K |
| Campbell & CO Investment Adviser LLC | 0.02% | Add +7.2% | 52,762 | $361K |
| Canada Pension Plan Investment Board | 0.00% | New | 51,500 | $353K |
| Rhumbline Advisers | 0.00% | Reduce -16.4% | 51,307 | $351K |
| Zazove Associates LLC | 0.62% | No change | 50,000 | $343K |
| State of Wyoming | 0.04% | Add +20.0% | 48,062 | $329K |
| Isthmus Partners, LLC | 0.04% | Reduce -1.8% | 47,664 | $326K |
| Hillsdale Investment Management Inc. | 0.01% | Add +41.9% | 44,000 | $301K |
| Wells Fargo & Company | 0.00% | Add +48.8% | 43,900 | $301K |
| Algert Global LLC | 0.00% | Add +81.4% | 43,105 | $295K |
| Alliancebernstein L.P. | 0.00% | No change | 42,210 | $289K |
| GRIMES & Co WEALTH MANAGEMENT, LLC | 0.01% | No change | 41,163 | $282K |
| Susquehanna International Group, LLP | 0.00% | New | 40,968 | $281K |
| Raymond James Financial Inc. | 0.00% | Reduce -5.6% | 39,609 | $271K |
| Commonwealth Equity Services, LLC | 0.00% | Reduce -4.6% | 38,650 | $265K |
| Seizert Capital Partners, LLC | 0.01% | No change | 38,023 | $260K |
| Graham Capital Management, L.P. | 0.01% | Add +9.7% | 36,985 | $253K |
| Sterling Capital Management LLC | 0.00% | Reduce -1.2% | 36,978 | $253K |
| Exchange Traded Concepts, LLC | 0.00% | Add +26.4% | 35,366 | $242K |
| Squarepoint Ops LLC | 0.00% | New | 34,137 | $234K |
| WINTON GROUP Ltd | 0.01% | Reduce -48.7% | 33,098 | $227K |
| Comerica Bank | 0.00% | No change | 31,614 | $217K |
| Martingale Asset Management L P | 0.01% | Reduce -1.0% | 31,238 | $214K |
| Prelude Capital Management, LLC | 0.02% | New | 31,200 | $214K |
| Tudor Investment Corporation | 0.00% | Reduce -85.9% | 29,237 | $200K |
| XTX Topco Ltd | 0.01% | Add +104.7% | 29,131 | $200K |
| Thrivent Financial for Lutherans | 0.00% | No change | 27,278 | $187K |
| Aristides Capital LLC | 0.06% | Reduce -7.5% | 26,720 | $183K |
| Integrated Advisors Network LLC | 0.01% | Reduce -13.1% | 25,281 | $173K |
| Ieq Capital, LLC | 0.00% | Reduce -22.0% | 24,012 | $164K |
| Osaic Holdings, Inc. | 0.00% | Reduce -12.8% | 22,882 | $157K |
| Brandywine Global Investment Management, LLC | 0.00% | New | 22,600 | $155K |
| Boston Partners | 0.00% | Reduce -11.0% | 21,256 | $146K |
| EP Wealth Advisors, LLC | 0.00% | — | 20,417 | $140K |
"% of holder's portfolio" is HDSN's weight in each manager's 13F, not the share of Hudson Technologies Inc. the manager owns.