New Positions
28 managers initiated
Top five by reported value
- CASPIAN CAPITAL LP$5.0M
- SEGALL BRYANT & HAMILL, LLC$1.2M
- Credit Agricole S A$959.0K
- PRUDENTIAL FINANCIAL INC$479.3K
- CANADA PENSION PLAN INVESTMENT BOARD$352.8K
Hudson Technologies Inc NASDAQ NMS - GLOBAL MARKET:HDSN
Institutional holders, quarter-over-quarter share deltas, and new and closed positions disclosed in Form 13F. Period 2025-12-31 · prior 2025-09-30.
28 new44 added97 reduced28 exited
Total Institutional Holders
169
as of 2025-12-31
Top Holder
Hartree Partners, LP
$26.0M
Largest QoQ Increase
CASPIAN CAPITAL LP
+728,306 sh
Largest QoQ Decrease
Royal Bank of Canada
-868,960 sh
New Positions(28)
| Manager | Shares | Δ Shares | Value | Δ Value | % Δ |
|---|---|---|---|---|---|
| CASPIAN CAPITAL LP | 728,306 | +728,306 | $5.0M | +$5.0M | — |
| SEGALL BRYANT & HAMILL, LLC | 180,354 | +180,354 | $1.2M | +$1.2M | — |
| Credit Agricole S A | 140,000 | +140,000 | $959.0K | +$959.0K | — |
| PRUDENTIAL FINANCIAL INC | 69,970 | +69,970 | $479.3K | +$479.3K | — |
| CANADA PENSION PLAN INVESTMENT BOARD | 51,500 | +51,500 | $352.8K | +$352.8K | — |
| Sanctuary Advisors, LLC | 43,558 | +43,558 | $268.8K | +$268.8K | — |
| Squarepoint Ops LLC | 34,137 | +34,137 | $233.8K | +$233.8K | — |
| PRELUDE CAPITAL MANAGEMENT, LLC | 31,200 | +31,200 | $213.7K | +$213.7K | — |
| Brandywine Global Investment Management, LLC | 22,600 | +22,600 | $154.8K | +$154.8K | — |
| EP Wealth Advisors, LLC | 20,417 | +20,417 | $139.9K | +$139.9K | — |
| SHERBROOKE PARK ADVISERS LLC | 19,369 | +19,369 | $132.7K | +$132.7K | — |
| Inspire Advisors, LLC | 14,696 | +14,696 | $100.7K | +$100.7K | — |
| MANGROVE PARTNERS | 14,058 | +14,058 | $96.3K | +$96.3K | — |
| AXQ CAPITAL, LP | 12,433 | +12,433 | $85.2K | +$85.2K | — |
| Prime Capital Investment Advisors, LLC | 11,794 | +11,794 | $80.8K | +$80.8K | — |
| Kemnay Advisory Services Inc. | 9,124 | +9,124 | $62.5K | +$62.5K | — |
| AlphaQuest LLC | 5,550 | +5,550 | $38.0K | +$38.0K | — |
| UBS ASSET MANAGEMENT AMERICAS INC | 1,807 | +1,807 | $12.4K | +$12.4K | — |
| BARD ASSOCIATES INC | 1,000 | +1,000 | $6.8K | +$6.8K | — |
| FINANCIAL CONSULATE, INC | 500 | +500 | $3.4K | +$3.4K | — |
| Rockefeller Capital Management L.P. | 158 | +158 | $1.1K | +$1.1K | — |
| KBC Group NV | 123,001 | +123,001 | $843 | +$843 | — |
| IFP Advisors, Inc | 50 | +50 | $426 | +$426 | — |
| Hilton Head Capital Partners, LLC | 50 | +50 | $342 | +$342 | — |
| Janney Montgomery Scott LLC | 18,022 | +18,022 | $123 | +$123 | — |
| Allworth Financial LP | 14 | +14 | $96 | +$96 | — |
| State of Alaska, Department of Revenue | 4,145 | +4,145 | $28 | +$28 | — |
| ROTHSCHILD INVESTMENT LLC | 1 | +1 | $7 | +$7 | — |
Added To(44)
| Manager | Shares | Δ Shares | Value | Δ Value | % Δ |
|---|---|---|---|---|---|
| BlackRock, Inc. | 2,913,869 | +50,596 | $20.0M | -$8.5M | 1.8% |
| DIMENSIONAL FUND ADVISORS LP | 2,043,151 | +33,670 | $14.0M | -$6.0M | 1.7% |
| AMERICAN CENTURY COMPANIES INC | 1,386,683 | +112,793 | $9.5M | -$3.2M | 8.8% |
| STATE STREET CORP | 894,064 | +209 | $6.1M | -$2.8M | 0.0% |
| MARSHALL WACE, LLP | 465,130 | +339,543 | $3.2M | +$1.9M | 270.4% |
| WESTERLY CAPITAL MANAGEMENT, LLC | 2,550,000 | +660,000 | $17.5M | -$1.3M | 34.9% |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | 378,255 | +17,607 | $2.6M | -$990.2K | 4.9% |
| Point72 Asset Management, L.P. | 113,263 | +108,963 | $775.9K | +$733.2K | 2534.0% |
| UBS Group AG | 136,088 | +2,268 | $932.2K | -$396.6K | 1.7% |
| FIRST TRUST ADVISORS LP | 141,978 | +4,171 | $972.5K | -$395.9K | 3.0% |
| Empowered Funds, LLC | 176,413 | +17,607 | $1.2M | -$368.5K | 11.1% |
| LAZARD ASSET MANAGEMENT LLC | 431,769 | +170,964 | $3.0M | +$367.8K | 65.5% |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 115,316 | +424 | $789.9K | -$351.0K | 0.4% |
| GOLDMAN SACHS GROUP INC | 189,896 | +25,436 | $1.3M | -$332.3K | 15.5% |
| Quantinno Capital Management LP | 121,947 | +66,612 | $835.3K | +$285.9K | 120.4% |
| Qube Research & Technologies Ltd | 163,703 | +75,007 | $1.1M | +$240.6K | 84.6% |
| EdgeRock Capital LLC | 90,517 | +5,220 | $620.0K | -$227.0K | 6.1% |
| Pacific Ridge Capital Partners, LLC | 118,406 | +14,826 | $811.1K | -$217.5K | 14.3% |
| AMERIPRISE FINANCIAL INC | 71,167 | +2,292 | $487.5K | -$196.4K | 3.3% |
| Voya Investment Management LLC | 61,273 | +1,066 | $419.7K | -$178.1K | 1.8% |
| Campbell & CO Investment Adviser LLC | 52,762 | +3,544 | $361.4K | -$127.3K | 7.2% |
| Invesco Ltd. | 97,108 | +18,324 | $665.2K | -$117.1K | 23.3% |
| Graham Capital Management, L.P. | 36,985 | +3,256 | $253.3K | -$81.6K | 9.7% |
| State of Wyoming | 48,062 | +8,015 | $329.2K | -$68.4K | 20.0% |
| STRS OHIO | 77,100 | +17,500 | $528.1K | -$63.7K | 29.4% |
| XTX Topco Ltd | 29,131 | +14,898 | $199.5K | +$58.2K | 104.7% |
| BARCLAYS PLC | 67,394 | +6,846 | $547.2K | -$54.0K | 11.3% |
| MetLife Investment Management, LLC | 16,407 | +124 | $112.4K | -$49.3K | 0.8% |
| STATE OF WISCONSIN INVESTMENT BOARD | 99,764 | +26,937 | $683.4K | -$39.8K | 37.0% |
| EXCHANGE TRADED CONCEPTS, LLC | 35,366 | +7,376 | $242.3K | -$35.7K | 26.4% |
| STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM | 13,653 | +1,083 | $93.5K | -$31.3K | 8.6% |
| Versant Capital Management, Inc | 8,303 | +82 | $56.9K | -$24.8K | 1.0% |
| GAMMA Investing LLC | 6,684 | +197 | $45.8K | -$18.6K | 3.0% |
| BNP PARIBAS ARBITRAGE, SNC | 8,757 | +1,227 | $60.0K | -$14.8K | 16.3% |
| Inspire Investing, LLC | 68,583 | +22,160 | $469.8K | +$8.8K | 47.7% |
| AVIVA PLC | 67,703 | +20,178 | $463.8K | -$8.2K | 42.5% |
| WELLS FARGO & COMPANY/MN | 43,900 | +14,392 | $300.7K | +$7.7K | 48.8% |
| Hillsdale Investment Management Inc. | 44,000 | +13,000 | $301.4K | -$6.4K | 41.9% |
| FMR LLC | 6,413 | +1,457 | $43.9K | -$5.3K | 29.4% |
| NATIONAL BANK OF CANADA /FI/ | 1,260 | +29 | $8.6K | -$3.6K | 2.4% |
| PRINCIPAL FINANCIAL GROUP INC | 59,073 | +18,240 | $404.6K | -$822 | 44.7% |
| ACADIAN ASSET MANAGEMENT LLC | 220,612 | +8,667 | $1.5K | -$593 | 4.1% |
| ALGERT GLOBAL LLC | 43,105 | +19,340 | $295 | +$59 | 81.4% |
| SG Americas Securities, LLC | 19,132 | +7,557 | $131 | +$16 | 65.3% |
Reduced(97)
| Manager | Shares | Δ Shares | Value | Δ Value | % Δ |
|---|---|---|---|---|---|
| Hartree Partners, LP | 3,800,000 | 0 | $26.0M | -$11.7M | 0.0% |
| VANGUARD GROUP INC | 2,338,710 | -34,471 | $16.0M | -$7.5M | -1.4% |
| Royal Bank of Canada | 1,504 | -868,960 | $10.0K | -$7.0M | -99.8% |
| RENAISSANCE TECHNOLOGIES LLC | 1,697,250 | -99,600 | $11.6M | -$6.2M | -5.5% |
| NEW SOUTH CAPITAL MANAGEMENT INC | 1,283,528 | -50,809 | $8.8M | -$4.5M | -3.8% |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 982,819 | -128,984 | $6.7M | -$4.3M | -11.6% |
| D. E. Shaw & Co., Inc. | 582,780 | -239,029 | $4.0M | -$4.2M | -29.1% |
| MORGAN STANLEY | 705,577 | -87,150 | $4.8M | -$3.0M | -11.0% |
| GEODE CAPITAL MANAGEMENT, LLC | 943,154 | -11,272 | $6.5M | -$3.0M | -1.2% |
| MILLENNIUM MANAGEMENT LLC | 189,061 | -166,897 | $1.3M | -$2.2M | -46.9% |
| BANK OF AMERICA CORP /DE/ | 83,404 | -195,768 | $571.3K | -$2.2M | -70.1% |
| TUDOR INVESTMENT CORP ET AL | 29,237 | -178,012 | $200.3K | -$1.9M | -85.9% |
| Trexquant Investment LP | 59,580 | -151,325 | $408.1K | -$1.7M | -71.8% |
| North Star Investment Management Corp. | 4,075 | -166,000 | $27.9K | -$1.7M | -97.6% |
| NORTHERN TRUST CORP | 391,889 | -24,618 | $2.7M | -$1.5M | -5.9% |
| PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO | 410,099 | 0 | $2.8M | -$1.3M | 0.0% |
| 683 Capital Management, LLC | 335,000 | -15,000 | $2.3M | -$1.2M | -4.3% |
| Bank of New York Mellon Corp | 325,707 | -12,683 | $2.2M | -$1.1M | -3.7% |
| JACOBS LEVY EQUITY MANAGEMENT, INC | 159,728 | -63,217 | $1.1M | -$1.1M | -28.4% |
| TWO SIGMA ADVISERS, LP | 167,300 | -60,400 | $1.1M | -$1.1M | -26.5% |
| AQR CAPITAL MANAGEMENT LLC | 339,352 | -5,932 | $2.3M | -$1.1M | -1.7% |
| TWO SIGMA INVESTMENTS, LP | 135,400 | -54,821 | $927.5K | -$961.4K | -28.8% |
| JB CAPITAL PARTNERS LP | 306,200 | 0 | $2.1M | -$943.1K | 0.0% |
| CITADEL ADVISORS LLC | 80,083 | -68,903 | $548.6K | -$930.9K | -46.2% |
| JANE STREET GROUP, LLC | 91,216 | -51,305 | $624.8K | -$790.4K | -36.0% |
| MARATHON CAPITAL MANAGEMENT | 175,325 | -19,125 | $1.2M | -$729.9K | -9.8% |
| O'SHAUGHNESSY ASSET MANAGEMENT, LLC | 170,826 | -5,062 | $1.2M | -$576.4K | -2.9% |
| JPMORGAN CHASE & CO | 127,571 | -15,327 | $873.9K | -$545.1K | -10.7% |
| Russell Investments Group, Ltd. | 138,687 | -10,972 | $950.0K | -$536.1K | -7.3% |
| FRANKLIN RESOURCES INC | 77,522 | -27,539 | $531.0K | -$512.2K | -26.2% |
| WEDGE CAPITAL MANAGEMENT L L P/NC | 153,364 | -1,704 | $1.1M | -$489.3K | -1.1% |
| WINTON GROUP Ltd | 33,098 | -31,388 | $226.7K | -$413.6K | -48.7% |
| COMMONWEALTH EQUITY SERVICES, LLC | 38,650 | -1,868 | $264.8K | +$264.3K | -4.6% |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 40,968 | -13,832 | $280.6K | -$263.5K | -25.2% |
| LOS ANGELES CAPITAL MANAGEMENT LLC | 221,182 | -10,010 | $2.0M | -$263.1K | -4.3% |
| RHUMBLINE ADVISERS | 51,307 | -10,102 | $351.4K | -$258.3K | -16.4% |
| Nuveen, LLC | 83,140 | 0 | $569.5K | -$256.1K | 0.0% |
| DEUTSCHE BANK AG\ | 53,225 | -9,274 | $364.6K | -$256.0K | -14.8% |
| Kerrisdale Advisers, LLC | 57,622 | -6,478 | $394.7K | -$241.8K | -10.1% |
| PINNACLE ASSOCIATES LTD | 70,000 | 0 | $479.5K | -$215.6K | 0.0% |
| ISTHMUS PARTNERS, LLC | 47,664 | -852 | $326.5K | -$155.3K | -1.8% |
| ZAZOVE ASSOCIATES LLC | 50,000 | 0 | $342.5K | -$154.0K | 0.0% |
| RAYMOND JAMES FINANCIAL INC | 39,609 | -2,330 | $271.3K | -$145.1K | -5.5% |
| IEQ CAPITAL, LLC | 24,012 | -6,771 | $164.5K | -$141.2K | -22.0% |
| ALLIANCEBERNSTEIN L.P. | 42,210 | 0 | $289.1K | -$130.0K | 0.0% |
| GRIMES & COMPANY, INC. | 41,163 | 0 | $282.0K | -$126.8K | 0.0% |
| Sterling Capital Management LLC | 36,978 | -437 | $253.3K | -$118.2K | -1.2% |
| SEIZERT CAPITAL PARTNERS, LLC | 38,023 | 0 | $260.5K | -$117.1K | 0.0% |
| Integrated Advisors Network LLC | 25,281 | -3,825 | $173.2K | -$115.8K | -13.1% |
| ADVISOR GROUP HOLDINGS, INC. | 22,882 | -3,350 | $156.7K | -$109.8K | -12.8% |
| Aristides Capital LLC | 26,720 | -2,157 | $183.0K | -$103.7K | -7.5% |
| MARTINGALE ASSET MANAGEMENT L P | 31,238 | -307 | $214.0K | -$99.3K | -1.0% |
| COMERICA BANK | 31,614 | 0 | $216.6K | -$97.4K | 0.0% |
| Boston Partners | 21,256 | -2,620 | $145.6K | -$91.5K | -11.0% |
| INTECH INVESTMENT MANAGEMENT LLC | 14,602 | -4,611 | $100.0K | -$90.8K | -24.0% |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 17,859 | -424 | $122.3K | -$59.2K | -2.3% |
| Legato Capital Management LLC | 18,479 | 0 | $126.6K | -$56.9K | 0.0% |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE | 12,110 | -1,093 | $83.0K | -$48.2K | -8.3% |
| Truvestments Capital LLC | 15,011 | -123 | $102.8K | -$47.5K | -0.8% |
| BROWN BROTHERS HARRIMAN & CO | 13,263 | 0 | $90.9K | -$40.9K | 0.0% |
| Cardinal Point Capital Management, ULC | 12,850 | 0 | $88.0K | -$39.6K | 0.0% |
| 1620 INVESTMENT ADVISORS, INC. | 11,245 | -241 | $77.0K | -$37.0K | -2.1% |
| Police & Firemen's Retirement System of New Jersey | 10,817 | 0 | $74.1K | -$33.3K | 0.0% |
| SRS Capital Advisors, Inc. | 77 | -3,196 | $528 | -$32.0K | -97.6% |
| WEALTH ENHANCEMENT ADVISORY SERVICES, LLC | 12,454 | -293 | $86.9K | -$28.3K | -2.3% |
| NEW YORK STATE COMMON RETIREMENT FUND | 5,270 | 0 | $36.1K | -$16.2K | 0.0% |
| Tower Research Capital LLC (TRC) | 1,061 | -1,121 | $7.3K | -$14.4K | -51.4% |
| Steward Partners Investment Advisory, LLC | 4,000 | 0 | $27.4K | -$12.3K | 0.0% |
| CITIGROUP INC | 3,705 | -45 | $25.4K | -$11.9K | -1.2% |
| Legal & General Group Plc | 3,555 | 0 | $24.4K | -$10.9K | 0.0% |
| Ameritas Investment Partners, Inc. | 3,215 | 0 | $22.0K | -$9.9K | 0.0% |
| MEEDER ASSET MANAGEMENT INC | 2,565 | 0 | $17.6K | -$7.9K | 0.0% |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM | 2,368 | -56 | $16.2K | -$7.8K | -2.3% |
| SIMPLEX TRADING, LLC | 1,160 | -14,707 | $7.9K | +$7.8K | -92.7% |
| Farther Finance Advisors, LLC | 47 | -458 | $322 | -$4.7K | -90.7% |
| True Wealth Design, LLC | 991 | -56 | $6.8K | -$3.6K | -5.3% |
| EverSource Wealth Advisors, LLC | 589 | -175 | $4.0K | -$3.6K | -22.9% |
| NISA INVESTMENT ADVISORS, LLC | 977 | 0 | $6.7K | -$3.0K | 0.0% |
| NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO | 500 | 0 | $3.4K | -$1.5K | 0.0% |
| JONES FINANCIAL COMPANIES LLLP | 1 | -131 | $7 | -$1.3K | -99.2% |
| Private Wealth Management Group, LLC | 406 | 0 | $2.8K | -$1.3K | 0.0% |
| C M BIDWELL & ASSOCIATES LTD | 400 | 0 | $2.7K | -$1.2K | 0.0% |
| Optiver Holding B.V. | 350 | 0 | $2.4K | -$1.1K | 0.0% |
| Red Tortoise LLC | 328 | 0 | $2.2K | -$1.0K | 0.0% |
| KESTREL INVESTMENT MANAGEMENT CORP | 201,750 | -7,100 | $1.4K | -$693 | -3.4% |
| Stephens Consulting, LLC | 126 | 0 | $864 | -$388 | 0.0% |
| PRICE T ROWE ASSOCIATES INC /MD/ | 73,706 | 0 | $505 | -$227 | 0.0% |
| PNC Financial Services Group, Inc. | 3 | -11 | $21 | -$118 | -78.6% |
| Thrivent Financial for Lutherans | 27,278 | 0 | $187 | -$84 | 0.0% |
| Sunbelt Securities, Inc. | 27 | 0 | $185 | -$83 | 0.0% |
| CWM, LLC | 12,080 | -2,022 | $83 | -$57 | -14.3% |
| SBI Securities Co., Ltd. | 12 | -1 | $82 | -$47 | -7.7% |
| NEW YORK STATE TEACHERS RETIREMENT SYSTEM | 3,518 | 0 | $24 | -$11 | 0.0% |
| AMALGAMATED BANK | 1,209 | -288 | $8 | -$7 | -19.2% |
| Covestor Ltd | 935 | -66 | $6 | -$4 | -6.6% |
| HARBOR CAPITAL ADVISORS, INC. | 647 | -11 | $4 | -$3 | -1.7% |
| BESSEMER GROUP INC | 33 | 0 | $0 | $0 | 0.0% |
Sold Out(28)
Top Holders by reported value
Ranked by the dollar value reported on the latest Form 13F. Share counts reflect long positions as of 2025-12-31.
| Manager | Shares | $ Value | Δ Shares | QoQ % |
|---|---|---|---|---|
| Hartree Partners, LP | 3,800,000 | $26.0M | 0 | 0.0% |
| BlackRock, Inc. | 2,913,869 | $20.0M | +50,596 | 1.8% |
| WESTERLY CAPITAL MANAGEMENT, LLC | 2,550,000 | $17.5M | +660,000 | 34.9% |
| VANGUARD GROUP INC | 2,338,710 | $16.0M | -34,471 | -1.4% |
| DIMENSIONAL FUND ADVISORS LP | 2,043,151 | $14.0M | +33,670 | 1.7% |
| RENAISSANCE TECHNOLOGIES LLC | 1,697,250 | $11.6M | -99,600 | -5.5% |
| AMERICAN CENTURY COMPANIES INC | 1,386,683 | $9.5M | +112,793 | 8.8% |
| NEW SOUTH CAPITAL MANAGEMENT INC | 1,283,528 | $8.8M | -50,809 | -3.8% |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 982,819 | $6.7M | -128,984 | -11.6% |
| GEODE CAPITAL MANAGEMENT, LLC | 943,154 | $6.5M | -11,272 | -1.2% |
| STATE STREET CORP | 894,064 | $6.1M | +209 | 0.0% |
| CASPIAN CAPITAL LP | 728,306 | $5.0M | +728,306 | — |
| MORGAN STANLEY | 705,577 | $4.8M | -87,150 | -11.0% |
| D. E. Shaw & Co., Inc. | 582,780 | $4.0M | -239,029 | -29.1% |
| MARSHALL WACE, LLP | 465,130 | $3.2M | +339,543 | 270.4% |
| LAZARD ASSET MANAGEMENT LLC | 431,769 | $3.0M | +170,964 | 65.5% |
| PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO | 410,099 | $2.8M | 0 | 0.0% |
| NORTHERN TRUST CORP | 391,889 | $2.7M | -24,618 | -5.9% |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | 378,255 | $2.6M | +17,607 | 4.9% |
| AQR CAPITAL MANAGEMENT LLC | 339,352 | $2.3M | -5,932 | -1.7% |
New & Closed Positions this quarter
Closed Positions
28 managers exited
Top five by prior-quarter value
Methodology
Form 13F is the SEC's quarterly disclosure for institutional investment managers exercising discretion over $100 million or more in qualifying U.S. equity securities. Managers must file within 45 days of each calendar quarter end, which is why holdings shown here reflect a snapshot at the period date — not real-time positioning.
Quarter-over-quarter deltas compare each manager's most recently reported share count for HDSN against its prior-quarter count. New positions are entries where the prior count was zero; closed positions are entries where the current count is zero. Amendments (13F-HR/A) replace prior filings for the same period.
Source: SEC EDGAR Form 13F (XML information tables). Dollar values are as reported by the manager and may use mid-quarter pricing conventions. CUSIP-to-ticker resolution is best-effort.