Hudson TechnologiesHDSN
13F holders, Q1 2026 (March 31)160holders −8
22new positions
27sold out
6famous investors
$5.88avg. 13F price*
At the end of Q1 2026, 160 institutions reported holding Hudson Technologies Inc. (HDSN) in their 13F filings, down 8 from Q4 2025. 22 opened new positions and 27 sold out. The largest holders were Hartree Partners, LP ($22.3M), Westerly Capital Management, LLC ($18.7M) and BlackRock, Inc. ($16.8M). 6 famous investors held it, including Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio), Ken Griffin (0.0% of Citadel Advisors'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 Q4 2025 → Q1 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 22 | $5.1M |
| Exits | 27 | $8.2M |
All 13F filers, Q4 2025 → Q1 2026: 3,367,313 shares bought and 3,021,116 shares sold, net +346,197 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 160 holders
| Hartree Partners, LP | 4.85% | No change | 3,800,000 | $22.3M |
| Westerly Capital Management, LLC | 5.75% | Add +24.5% | 3,175,000 | $18.7M |
| BlackRock, Inc. | 0.00% | Reduce -1.8% | 2,862,539 | $16.8M |
| Dimensional Fund Advisors LP | 0.00% | Add +5.2% | 2,148,311 | $12.6M |
| Vanguard Capital Management LLC | 0.00% | — | 1,660,146 | $9.8M |
| Renaissance Technologies | 0.01% | Reduce -11.4% | 1,504,250 | $8.8M |
| American Century Companies Inc. | 0.00% | Add +7.3% | 1,487,774 | $8.7M |
| New South Capital Management Inc. | 0.35% | Reduce -3.3% | 1,241,223 | $7.3M |
| Geode Capital Management, LLC | 0.00% | Add +0.6% | 948,546 | $5.6M |
| State Street Corp. | 0.00% | Add +0.4% | 897,873 | $5.3M |
| Arrowstreet Capital, Limited Partnership | 0.00% | Reduce -10.3% | 881,235 | $5.2M |
| Caspian Capital LP | 4.17% | No change | 728,306 | $4.3M |
| Segall Bryant & Hamill, LLC | 0.05% | Add +248.4% | 628,341 | $3.7M |
| Bridgeway Capital Management, LLC | 0.06% | Add +31.7% | 498,109 | $2.9M |
| Morgan Stanley | 0.00% | Reduce -33.1% | 471,947 | $2.8M |
| Citadel Advisors | 0.00% | Add +415.4% | 412,750 | $2.4M |
| Public Employees Retirement System of Ohio | 0.01% | No change | 410,099 | $2.4M |
| Northern Trust Corp. | 0.00% | Add +1.9% | 399,363 | $2.3M |
| Qube Research & Technologies Ltd | 0.00% | Add +126.5% | 370,876 | $2.2M |
| D. E. Shaw & Co. | 0.00% | Reduce -38.5% | 358,682 | $2.1M |
| AQR Capital Management | 0.00% | Add +1.5% | 344,304 | $2.0M |
| Lazard Asset Management LLC | 0.00% | Reduce -24.5% | 325,915 | $1.9M |
| 683 Capital Management, LLC | 0.19% | Reduce -3.0% | 325,000 | $1.9M |
| JB Capital Partners LP | 0.31% | No change | 306,200 | $1.8M |
| Bank of New York Mellon Corp | 0.00% | Reduce -13.3% | 282,435 | $1.7M |
| Two Sigma Investments, LP | 0.00% | Add +101.6% | 272,925 | $1.6M |
| Vanguard Portfolio Management LLC | 0.00% | — | 268,536 | $1.6M |
| Vanguard Fiduciary Trust Co. | 0.00% | — | 242,866 | $1.4M |
| Marshall Wace, LLP | 0.00% | Reduce -52.9% | 219,271 | $1.3M |
| Kestrel Investment Management Corp. | 0.70% | Reduce -0.5% | 200,750 | $1.2M |
| Goldman Sachs Group Inc. | 0.00% | Add +4.2% | 197,932 | $1.2M |
| Empowered Funds, LLC | 0.01% | New | 194,555 | $1.1M |
| Jacobs Levy Equity Management, Inc. | 0.00% | Add +12.0% | 178,933 | $1.1M |
| Numerai GP LLC | 0.10% | New | 177,292 | $1.0M |
| Marathon Capital Management | 0.23% | Reduce -0.6% | 174,325 | $1.0M |
| O'shaughnessy Asset Management, LLC | 0.01% | Reduce 0.0% | 170,825 | $1.0M |
| GRIMES & Co WEALTH MANAGEMENT, LLC | 0.03% | Add +285.3% | 158,618 | $933K |
| Russell Investments Group, Ltd. | 0.00% | Add +11.3% | 154,393 | $908K |
| Pacific Ridge Capital Partners, LLC | 0.19% | Add +24.1% | 146,930 | $864K |
| First Trust Advisors LP | 0.00% | Add +2.2% | 145,083 | $853K |
| Wedge Capital Management L L P | 0.02% | Reduce -5.6% | 144,736 | $851K |
| Credit Agricole S A | 0.00% | No change | 140,000 | $823K |
| KBC Group NV | 0.00% | No change | 123,001 | $723K |
| Prudential Financial Inc. | 0.00% | Add +74.0% | 121,740 | $716K |
| JPMorgan Chase & Co. | 0.00% | Reduce -7.9% | 117,539 | $672K |
| Bank of America Corp. | 0.00% | Add +22.7% | 102,335 | $602K |
| Charles Schwab Investment Management Inc. | 0.00% | Reduce -11.6% | 101,977 | $600K |
| Jump Financial, LLC | 0.01% | New | 90,600 | $533K |
| EdgeRock Capital LLC | 0.14% | No change | 90,517 | $532K |
| Inspire Investing, LLC | 0.03% | Add +28.4% | 88,086 | $518K |
| Nuveen, LLC | 0.00% | Add +0.7% | 83,715 | $492K |
| Mackenzie Financial Corp. | 0.00% | New | 82,339 | $484K |
| State of Wisconsin Investment Board | 0.00% | Reduce -19.1% | 80,690 | $474K |
| T. Rowe Price Associates Inc. | 0.00% | Add +8.6% | 80,013 | $471K |
| Invesco Ltd. | 0.00% | Reduce -18.9% | 78,786 | $463K |
| STRS Ohio | 0.00% | No change | 77,100 | $453K |
| Quantinno Capital Management LP | 0.00% | Reduce -37.5% | 76,268 | $448K |
| Millennium Management | 0.00% | Reduce -61.6% | 72,683 | $427K |
| Pinnacle Associates Ltd. | 0.01% | No change | 70,000 | $412K |
| Jane Street Group, LLC | 0.00% | Reduce -23.4% | 69,854 | $411K |
| Campbell & CO Investment Adviser LLC | 0.02% | Add +16.4% | 61,443 | $361K |
| Voya Investment Management LLC | 0.00% | Reduce -0.7% | 60,855 | $358K |
| WINTON GROUP Ltd | 0.01% | Add +76.8% | 58,528 | $344K |
| Deutsche Bank AG | 0.00% | Add +9.5% | 58,277 | $343K |
| Kerrisdale Advisers, LLC | 0.13% | No change | 57,622 | $339K |
| Ameriprise Financial Inc. | 0.00% | Reduce -19.8% | 57,087 | $336K |
| Zazove Associates LLC | 0.53% | No change | 50,000 | $294K |
| Rhumbline Advisers | 0.00% | Reduce -2.7% | 49,899 | $293K |
| Alliancebernstein L.P. | 0.00% | No change | 42,210 | $289K |
| Canada Pension Plan Investment Board | 0.00% | Reduce -6.8% | 48,000 | $282K |
| Isthmus Partners, LLC | 0.03% | Reduce -8.9% | 43,397 | $255K |
| Schonfeld Strategic Advisors LLC | 0.00% | New | 42,716 | $251K |
| Raymond James Financial Inc. | 0.00% | Add +7.8% | 42,699 | $251K |
| UBS Group AG | 0.00% | Reduce -68.8% | 42,475 | $250K |
| Boston Partners | 0.00% | Add +88.2% | 39,994 | $235K |
| Exchange Traded Concepts, LLC | 0.00% | Add +11.7% | 39,507 | $232K |
| Commonwealth Equity Services, LLC | 0.00% | Reduce -0.0% | 38,647 | $227K |
| Fox Run Management, L.L.C. | 0.04% | New | 39,373 | $225K |
| Inspire Advisors, LLC | 0.02% | Add +147.7% | 36,406 | $214K |
| Graham Capital Management, L.P. | 0.01% | Reduce -2.6% | 36,033 | $212K |
| Susquehanna International Group, LLP | 0.00% | Reduce -16.6% | 34,154 | $201K |
| Atlantic Union Bankshares Corp | 0.00% | New | 31,250 | $184K |
| ExodusPoint Capital Management, LP | 0.00% | New | 31,125 | $183K |
| Vident Advisory, LLC | 0.00% | New | 30,875 | $182K |
| Fifth Third Bancorp | 0.00% | New | 30,396 | $179K |
| State of Wyoming | 0.02% | Reduce -39.5% | 29,097 | $171K |
| Squarepoint Ops LLC | 0.00% | Reduce -23.8% | 26,018 | $153K |
| Mirabella Financial Services LLP | 0.01% | New | 24,735 | $145K |
| Franklin Resources Inc. | 0.00% | Reduce -70.8% | 22,600 | $133K |
| EP Wealth Advisors, LLC | 0.00% | Add +2.7% | 20,974 | $123K |
| Quadrature Capital Ltd | 0.00% | New | 20,699 | $122K |
| Osaic Holdings, Inc. | 0.00% | Reduce -16.7% | 19,062 | $112K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Add +2.5% | 18,301 | $108K |
| Brooklyn Investment Group | 0.00% | New | 16,485 | $97K |
| FMR LLC | 0.00% | Add +152.6% | 16,196 | $95K |
| Wells Fargo & Company | 0.00% | Reduce -63.7% | 15,955 | $94K |
| Wealth Enhancement Advisory Services, LLC | 0.00% | Add +28.4% | 15,990 | $93K |
| Aquatic Capital Management LLC | 0.00% | New | 14,935 | $88K |
| Vanguard Global Advisers, LLC | 0.00% | — | 14,929 | $88K |
| Tudor Investment Corporation | 0.00% | Reduce -49.4% | 14,790 | $87K |
| Sequoia Financial Advisors, LLC | 0.00% | New | 14,000 | $82K |
| Centiva Capital, LP | 0.00% | New | 13,529 | $80K |
| Brown Brothers Harriman & Co. | 0.00% | No change | 13,263 | $78K |
| Cardinal Point Capital Management ULC | 0.00% | No change | 12,850 | $76K |
| Prime Capital Investment Advisors, LLC | 0.00% | Add +6.8% | 12,596 | $74K |
| State Board of Administration of Florida Retirement System | 0.00% | Reduce -7.9% | 12,570 | $74K |
| Truvestments Capital LLC | 0.01% | Reduce -20.2% | 11,973 | $70K |
| 1620 Investment Advisors, Inc. | 0.05% | Add +1.2% | 11,385 | $67K |
| Cwm, LLC | 0.00% | Reduce -6.9% | 11,249 | $66K |
| Thrivent Financial for Lutherans | 0.00% | Reduce -59.2% | 11,129 | $65K |
| Police & Firemen's Retirement System of New Jersey | 0.00% | No change | 10,817 | $64K |
| Manufacturers Life Insurance Company, The | 0.00% | Reduce -12.0% | 10,658 | $63K |
| Mangrove Partners Im, LLC | 0.01% | Reduce -26.0% | 10,401 | $61K |
| Intech Investment Management LLC | 0.00% | Reduce -29.5% | 10,290 | $61K |
| MetLife Investment Management, LLC | 0.00% | Reduce -47.9% | 8,554 | $50K |
| BNP Paribas Financial Markets | 0.00% | Reduce -5.6% | 8,270 | $49K |
| Versant Capital Management, Inc | 0.00% | Reduce -11.2% | 7,370 | $43K |
| Barclays PLC | 0.00% | Reduce -89.7% | 6,987 | $41K |
| Stance Capital LLC | 0.02% | New | 6,560 | $39K |
| Jones Financial Companies LLLP | 0.00% | Add +555000.0% | 5,551 | $32K |
| New York State Common Retirement Fund | 0.00% | No change | 5,270 | $31K |
| Tower Research Capital LLC (TRC) | 0.00% | Add +327.1% | 4,531 | $27K |
| State of Alaska, Department of Revenue | 0.00% | No change | 4,145 | $24K |
| Steward Partners Investment Advisory, LLC | 0.00% | No change | 4,000 | $24K |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Add +100.9% | 3,630 | $21K |
| GAMMA Investing LLC | 0.00% | Reduce -46.3% | 3,591 | $21K |
| New York State Teachers Retirement System | 0.00% | No change | 3,518 | $21K |
| Legal & General Group Plc | 0.00% | No change | 3,555 | $21K |
| LSV Asset Management | 0.00% | New | 3,400 | $20K |
| Ameritas Investment Partners, Inc. | 0.00% | No change | 3,215 | $19K |
| California State Teachers Retirement System | 0.00% | Reduce -12.0% | 2,083 | $12K |
| Citigroup Inc. | 0.00% | Reduce -51.8% | 1,787 | $11K |
| Royal Bank of Canada | 0.00% | Add +11.5% | 1,677 | $10K |
| Sterling Capital Management LLC | 0.00% | Reduce -96.5% | 1,274 | $7K |
| National Bank of Canada | 0.00% | No change | 1,260 | $7K |
| Covestor Ltd | 0.00% | Add +22.5% | 1,145 | $7K |
| Bard Associates Inc. | 0.00% | No change | 1,000 | $6K |
| Nisa Investment Advisors, LLC | 0.00% | No change | 977 | $6K |
| Parallel Advisors, LLC | 0.00% | New | 935 | $5K |
| Simplex Trading, LLC | 0.00% | Reduce -23.6% | 886 | $5K |
| Harbor Capital Advisors, Inc. | 0.00% | Add +21.0% | 783 | $5K |
| True Wealth Design, LLC | 0.00% | Reduce -16.9% | 823 | $5K |
| Rockefeller Capital Management L.P. | 0.00% | Add +395.6% | 783 | $5K |
| Essential Partners LLC | 0.00% | Reduce -2.8% | 697 | $4K |
| EverSource Wealth Advisors, LLC | 0.00% | Reduce -5.9% | 554 | $3K |
| Financial Consulate, Inc. | 0.00% | No change | 500 | $3K |
| Northwestern Mutual Wealth Management Co. | 0.00% | No change | 500 | $3K |
| Optiver Holding B.V. | 0.00% | Add +9.1% | 382 | $2K |
| Red Tortoise LLC | 0.00% | No change | 328 | $2K |
| Private Wealth Management Group, LLC | 0.00% | Reduce -26.4% | 299 | $2K |
| PNC Financial Services Group, Inc. | 0.00% | Add +2666.7% | 83 | $488 |
| US Bancorp \de | 0.00% | New | 56 | $329 |
| Hilton Head Capital Partners, LLC | 0.00% | No change | 50 | $294 |
| Allworth Financial LP | 0.00% | Add +207.1% | 43 | $253 |
| Farther Finance Advisors, LLC | 0.00% | Reduce -14.9% | 40 | $232 |
| Sunbelt Securities, Inc. | 0.00% | Add +14.8% | 31 | $182 |
| Kilter Group LLC | 0.00% | New | 20 | $118 |
| SBI Securities Co., Ltd. | 0.00% | No change | 12 | $71 |
| Arax Advisory Partners | 0.00% | Reduce -87.0% | 10 | $59 |
| Caitong International Asset Management Co., Ltd | 0.00% | New | 3 | $18 |
"% of holder's portfolio" is HDSN's weight in each manager's 13F, not the share of Hudson Technologies Inc. the manager owns.