Hudson TechnologiesHDSN
13F holders, Q3 2025 (September 30)170holders +22
42new positions
19sold out
7famous investors
$9.93avg. 13F price*
At the end of Q3 2025, 170 institutions reported holding Hudson Technologies Inc. (HDSN) in their 13F filings, up 22 from Q2 2025. 42 opened new positions and 19 sold out. The largest holders were Hartree Partners, LP ($37.7M), BlackRock, Inc. ($28.4M) and Vanguard Group Inc. ($23.6M). 7 famous investors held it, including Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio), Paul Tudor Jones (0.0% of Tudor Investment Corporation's portfolio) and David E. Shaw (0.0% of D. E. Shaw & Co.'s portfolio).
- Company
- Hudson Technologies Inc.
- CUSIP
- 444144109
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q2 2025 → Q3 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 42 | $18.4M |
| Exits | 19 | $14.9M |
All 13F filers, Q2 2025 → Q3 2025: 3,313,614 shares bought and 3,360,052 shares sold, net −46,438 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 170 holders
| Hartree Partners, LP | 13.10% | Reduce -5.0% | 3,800,000 | $37.7M |
| BlackRock, Inc. | 0.00% | Reduce -1.5% | 2,863,273 | $28.4M |
| Vanguard Group Inc. | 0.00% | Reduce -4.3% | 2,373,181 | $23.6M |
| Dimensional Fund Advisors LP | 0.00% | Add +0.1% | 2,009,481 | $20.0M |
| Westerly Capital Management, LLC | 5.95% | Reduce -5.5% | 1,890,000 | $18.8M |
| Renaissance Technologies | 0.02% | Add +7.5% | 1,796,850 | $17.8M |
| New South Capital Management Inc. | 0.60% | Reduce -1.2% | 1,334,337 | $13.2M |
| American Century Companies Inc. | 0.01% | Add +18.8% | 1,273,890 | $12.6M |
| Arrowstreet Capital, Limited Partnership | 0.01% | No change | 1,111,803 | $11.0M |
| Geode Capital Management, LLC | 0.00% | Add +1.1% | 954,426 | $9.5M |
| State Street Corp. | 0.00% | Reduce -5.3% | 893,855 | $8.9M |
| D. E. Shaw & Co. | 0.01% | Add +3.8% | 821,809 | $8.2M |
| Royal Bank of Canada | 0.00% | Reduce -4.2% | 802,872 | $8.0M |
| Morgan Stanley | 0.00% | Add +4.9% | 792,727 | $7.9M |
| Northern Trust Corp. | 0.00% | Reduce -3.1% | 416,507 | $4.1M |
| Public Employees Retirement System of Ohio | 0.01% | No change | 410,099 | $4.1M |
| Bridgeway Capital Management, LLC | 0.08% | Add +21.4% | 360,648 | $3.6M |
| Millennium Management | 0.00% | Reduce -23.7% | 355,958 | $3.5M |
| 683 Capital Management, LLC | 0.33% | Reduce -6.7% | 350,000 | $3.5M |
| AQR Capital Management | 0.00% | Add +4.3% | 345,284 | $3.4M |
| Bank of New York Mellon Corp | 0.00% | Add +0.5% | 338,390 | $3.4M |
| JB Capital Partners LP | 0.51% | No change | 306,200 | $3.0M |
| Bank of America Corp. | 0.00% | Add +59.8% | 279,172 | $2.8M |
| Lazard Asset Management LLC | 0.00% | Add +222.7% | 260,805 | $2.6M |
| Los Angeles Capital Management LLC | 0.01% | New | 231,192 | $2.3M |
| Two Sigma Advisers, LP | 0.00% | Reduce -42.2% | 227,700 | $2.3M |
| Jacobs Levy Equity Management, Inc. | 0.01% | Add +37.8% | 222,945 | $2.2M |
| Acadian Asset Management LLC | 0.00% | New | 211,945 | $2.1M |
| Trexquant Investment LP | 0.02% | Add +76.5% | 210,905 | $2.1M |
| Kestrel Investment Management Corp. | 1.17% | No change | 208,850 | $2.1M |
| Tudor Investment Corporation | 0.01% | New | 207,249 | $2.1M |
| Cubist Systematic Strategies, LLC | 0.03% | New | 205,932 | $2.0M |
| Marathon Capital Management | 0.44% | Reduce -22.1% | 194,450 | $1.9M |
| Two Sigma Investments, LP | 0.00% | Reduce -46.2% | 190,221 | $1.9M |
| O'shaughnessy Asset Management, LLC | 0.01% | Reduce -0.1% | 175,888 | $1.7M |
| Allspring Global Investments Holdings, LLC | 0.00% | New | 175,311 | $1.7M |
| North Star Investment Management Corp. | 0.11% | Add +3.7% | 170,075 | $1.7M |
| Goldman Sachs Group Inc. | 0.00% | Add +41.0% | 164,460 | $1.6M |
| Empowered Funds, LLC | 0.02% | Add +111.0% | 158,806 | $1.6M |
| Wedge Capital Management L L P | 0.03% | Reduce -26.3% | 155,068 | $1.5M |
| Russell Investments Group, Ltd. | 0.00% | Add +25.9% | 149,659 | $1.5M |
| JPMorgan Chase & Co. | 0.00% | Reduce -8.2% | 142,898 | $1.4M |
| Jane Street Group, LLC | 0.00% | Add +52.9% | 142,521 | $1.4M |
| First Trust Advisors LP | 0.00% | Add +765.1% | 137,807 | $1.4M |
| UBS Group AG | 0.00% | Add +24.0% | 133,820 | $1.3M |
| Marshall Wace, LLP | 0.00% | New | 125,587 | $1.2M |
| Charles Schwab Investment Management Inc. | 0.00% | Reduce -0.0% | 114,892 | $1.1M |
| Citadel Advisors | 0.00% | Add +19.7% | 114,386 | $1.1M |
| Franklin Resources Inc. | 0.00% | Add +3.9% | 105,061 | $1.0M |
| Pacific Ridge Capital Partners, LLC | 0.23% | No change | 103,580 | $1.0M |
| Qube Research & Technologies Ltd | 0.00% | New | 88,696 | $881K |
| EdgeRock Capital LLC | 0.24% | No change | 85,297 | $847K |
| Nuveen, LLC | 0.00% | Reduce -11.1% | 83,140 | $826K |
| Invesco Ltd. | 0.00% | Add +9.8% | 78,784 | $782K |
| T. Rowe Price Associates Inc. | 0.00% | No change | 73,706 | $732K |
| State of Wisconsin Investment Board | 0.00% | Reduce -27.3% | 72,827 | $723K |
| Pinnacle Associates Ltd. | 0.01% | No change | 70,000 | $695K |
| Ameriprise Financial Inc. | 0.00% | Reduce -28.5% | 68,875 | $684K |
| WINTON GROUP Ltd | 0.02% | Add +164.0% | 64,486 | $640K |
| Kerrisdale Advisers, LLC | 0.33% | No change | 64,100 | $637K |
| Deutsche Bank AG | 0.00% | Add +11.2% | 62,499 | $621K |
| Rhumbline Advisers | 0.00% | Reduce -7.5% | 61,409 | $610K |
| Barclays PLC | 0.00% | Reduce -10.2% | 60,548 | $601K |
| Voya Investment Management LLC | 0.00% | Reduce -14.6% | 60,207 | $598K |
| STRS Ohio | 0.00% | Reduce -9.7% | 59,600 | $592K |
| Boothbay Fund Management, LLC | 0.01% | New | 57,030 | $566K |
| Quantinno Capital Management LP | 0.00% | Add +21.8% | 55,335 | $549K |
| Zazove Associates LLC | 1.12% | Reduce -11.1% | 50,000 | $497K |
| Campbell & CO Investment Adviser LLC | 0.04% | New | 49,218 | $489K |
| Isthmus Partners, LLC | 0.06% | No change | 48,516 | $482K |
| Aviva PLC | 0.00% | Reduce -23.2% | 47,525 | $472K |
| Inspire Investing, LLC | 0.04% | New | 46,423 | $461K |
| Alliancebernstein L.P. | 0.00% | Reduce -11.8% | 42,210 | $419K |
| Raymond James Financial Inc. | 0.00% | Reduce -4.4% | 41,939 | $416K |
| GRIMES & Co WEALTH MANAGEMENT, LLC | 0.01% | No change | 41,163 | $409K |
| Principal Financial Group Inc. | 0.00% | New | 40,833 | $405K |
| Commonwealth Equity Services, LLC | 0.00% | Add +4.5% | 40,518 | $402K |
| State of Wyoming | 0.05% | Add +148.7% | 40,047 | $398K |
| Seizert Capital Partners, LLC | 0.02% | No change | 38,023 | $378K |
| Sterling Capital Management LLC | 0.01% | Add +3550.2% | 37,415 | $372K |
| Graham Capital Management, L.P. | 0.02% | New | 33,729 | $335K |
| Occudo Quantitative Strategies LP | 0.04% | Reduce -24.9% | 32,933 | $327K |
| PharVision Advisers, LLC | 0.18% | New | 31,799 | $316K |
| Comerica Bank | 0.00% | Reduce -22.5% | 31,614 | $314K |
| Martingale Asset Management L P | 0.01% | Reduce -31.2% | 31,545 | $313K |
| Hillsdale Investment Management Inc. | 0.01% | New | 31,000 | $308K |
| Ieq Capital, LLC | 0.00% | Add +13.0% | 30,783 | $306K |
| FourThought Financial Partners, LLC | 0.03% | New | 29,687 | $295K |
| Wells Fargo & Company | 0.00% | Add +18.1% | 29,508 | $293K |
| Integrated Advisors Network LLC | 0.01% | Reduce -2.0% | 29,106 | $289K |
| Aristides Capital LLC | 0.08% | New | 28,877 | $287K |
| Exchange Traded Concepts, LLC | 0.00% | Reduce -9.8% | 27,990 | $278K |
| Thrivent Financial for Lutherans | 0.00% | Reduce -66.1% | 27,278 | $271K |
| Osaic Holdings, Inc. | 0.00% | Reduce -2.9% | 26,232 | $266K |
| Aquatic Capital Management LLC | 0.00% | New | 25,856 | $257K |
| Boston Partners | 0.00% | Reduce -22.5% | 23,876 | $237K |
| Algert Global LLC | 0.00% | New | 23,765 | $236K |
| Balyasny Asset Management L.P. | 0.00% | New | 23,674 | $235K |
| Jump Financial, LLC | 0.00% | New | 23,260 | $231K |
| Schonfeld Strategic Advisors LLC | 0.00% | New | 21,008 | $209K |
"% of holder's portfolio" is HDSN's weight in each manager's 13F, not the share of Hudson Technologies Inc. the manager owns.