Skip to main content
Equibles

HDSN

Hudson Technologies Inc /Ny

Company with tickers: HDSN

CIK
925528
CUSIP
444144109
Shares Outstanding
42,068,788
13F Activity (30d)
95 filings 91 filers

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 159
Total Value: $193,379,878
Total Shares: 32,887,749
Showing 1–100 of 160 holdings by value · page 1 of 2

Institutional Ownership Trend

28 quarters

Holder Concentration

Across 159 13F filers · Δ vs Dec 31, 2025
Top Holder
11.6%
Mar 2024 → Mar 2026 · range 9.7% – 22.4%
−10.9 pts
Top 5
41.5%
Mar 2024 → Mar 2026 · range 30.3% – 49.6%
−8.1 pts
Top 10
60.0%
Mar 2024 → Mar 2026 · range 46.9% – 67.9%
−7.9 pts
HHI
482
Mar 2024 → Mar 2026 · range 328 – 795
Broadly held−313

Quarterly Activity

vs Dec 31, 2025
New
60
Increased
32
Decreased
42
Sold Out
31
Unchanged
25
Holder count: +29
Institutional value: +66.7%
Shares held: +94.3%

Top Buyers

vs Dec 31, 2025
Institution Added Now Holds Open
Mid SEGALL BRYANT & HAMILL, LLC +447,987 628,341
Mega TWO SIGMA INVESTMENTS, LP +137,525 272,925
Mid BRIDGEWAY CAPITAL MANAGEMENT, LLC +119,854 498,109
Mid GRIMES & Co WEALTH MANAGEMENT, LLC +117,455 158,618
Mega AMERICAN CENTURY COMPANIES INC +101,091 1,487,774

Top Sellers

vs Dec 31, 2025
Institution Sold Now Holds Open
Large MARSHALL WACE, LLP −245,859 219,271
Mega D. E. Shaw & Co., Inc. −224,098 358,682
Large LAZARD ASSET MANAGEMENT LLC −105,854 325,915
Mega ARROWSTREET CAPITAL, LIMITED PARTNERSHIP −101,584 881,235
Mega UBS Group AG −93,613 42,475

Top New Positions

vs Dec 31, 2025
Institution Acquired Value (USD) Open
Small WESTERLY CAPITAL MANAGEMENT, LLC 3,175,000 $18,669,000
Mega BlackRock, Inc. 2,862,539 $16,831,724
Mega DIMENSIONAL FUND ADVISORS LP 2,148,311 $12,632,067
Mega VANGUARD CAPITAL MANAGEMENT LLC 1,660,146 $9,761,658
Large RENAISSANCE TECHNOLOGIES LLC 1,504,250 $8,844,990

Top Sold-Out Positions

vs Dec 31, 2025
Institution Previously Held Last Value (USD) Open
Large LOS ANGELES CAPITAL MANAGEMENT LLC 221,182 $1,515,096
Large ACADIAN ASSET MANAGEMENT LLC 220,612 $1,511,192
Large TWO SIGMA ADVISERS, LP 167,300 $1,146,005
Large AVIVA PLC 67,703 $463,765
Large Trexquant Investment LP 59,580 $408,123
Filter: New 60 Increased 32 Reduced 42 Sold out 31 Unchanged 25
Showing 100 of 160
All Common Calls Puts
Export CSV
Holder Value (USD) % of 13F Shares Open
Small Hartree Partners, LP $22,344,000 11.55% 3,800,000
Small WESTERLY CAPITAL MANAGEMENT, LLC $18,669,000 9.65% 3,175,000
Mega BlackRock, Inc. $16,831,724 8.70% 2,862,539
Mega DIMENSIONAL FUND ADVISORS LP $12,632,067 6.53% 2,148,311
Mega VANGUARD CAPITAL MANAGEMENT LLC $9,761,658 5.05% 1,660,146
Large RENAISSANCE TECHNOLOGIES LLC $8,844,990 4.57% 1,504,250
Mega AMERICAN CENTURY COMPANIES INC $8,748,111 4.52% 1,487,774
Mid NEW SOUTH CAPITAL MANAGEMENT INC $7,298,390 3.77% 1,241,223
Mega GEODE CAPITAL MANAGEMENT, LLC $5,577,449 2.88% 948,546
Mega STATE STREET CORP $5,279,493 2.73% 897,873
Mega ARROWSTREET CAPITAL, LIMITED PARTNERSHIP $5,181,661 2.68% 881,235
Small CASPIAN CAPITAL LP $4,282,439 2.21% 728,306
Mid SEGALL BRYANT & HAMILL, LLC $3,694,645 1.91% 628,341
Mid BRIDGEWAY CAPITAL MANAGEMENT, LLC $2,928,880 1.51% 498,109
Mega MORGAN STANLEY $2,775,046 1.44% 471,947
Mega CITADEL ADVISORS LLC $2,426,969 1.26% 412,750
Large PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO Pension $2,411,382 1.25% 410,099
Mega NORTHERN TRUST CORP Bank $2,348,253 1.21% 399,363
Large Qube Research & Technologies Ltd $2,180,750 1.13% 370,876
Mega D. E. Shaw & Co., Inc. $2,109,049 1.09% 358,682
Mega AQR CAPITAL MANAGEMENT LLC $2,024,506 1.05% 344,304
Large LAZARD ASSET MANAGEMENT LLC $1,916,380 0.99% 325,915
Mid 683 Capital Management, LLC $1,911,000 0.99% 325,000
Small JB CAPITAL PARTNERS LP $1,800,456 0.93% 306,200
Mega Bank of New York Mellon Corp Bank $1,660,716 0.86% 282,435
Mega TWO SIGMA INVESTMENTS, LP $1,604,799 0.83% 272,925
Mega VANGUARD PORTFOLIO MANAGEMENT LLC $1,578,991 0.82% 268,536
Mega VANGUARD FIDUCIARY TRUST CO Bank $1,428,052 0.74% 242,866
Large MARSHALL WACE, LLP $1,289,313 0.67% 219,271
Small KESTREL INVESTMENT MANAGEMENT CORP $1,180,410 0.61% 200,750
Mega GOLDMAN SACHS GROUP INC $1,163,839 0.60% 197,932
Large Empowered Funds, LLC $1,143,983 0.59% 194,555
Large JACOBS LEVY EQUITY MANAGEMENT, INC $1,052,126 0.54% 178,933
Small Numerai GP LLC $1,042,476 0.54% 177,292
Small MARATHON CAPITAL MANAGEMENT $1,025,031 0.53% 174,325
Large O'SHAUGHNESSY ASSET MANAGEMENT, LLC $1,004,451 0.52% 170,825
Mid GRIMES & Co WEALTH MANAGEMENT, LLC $932,673 0.48% 158,618
Large Russell Investments Group, Ltd. $907,829 0.47% 154,393
Small Pacific Ridge Capital Partners, LLC $863,948 0.45% 146,930
Mega FIRST TRUST ADVISORS LP $853,088 0.44% 145,083
Mid WEDGE CAPITAL MANAGEMENT L L P/NC $851,047 0.44% 144,736
Large CREDIT AGRICOLE S A $823,200 0.43% 140,000
Large KBC Group NV $723,245 0.37% 123,001
Large PRUDENTIAL FINANCIAL INC $715,831 0.37% 121,740
Mega JPMORGAN CHASE & CO $691,128 0.36% 117,539
Mega BANK OF AMERICA CORP /DE/ Bank $601,729 0.31% 102,335
Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC $599,624 0.31% 101,977
Mid Jump Financial, LLC $532,728 0.28% 90,600
Micro EdgeRock Capital LLC $532,239 0.28% 90,517
Mid Inspire Investing, LLC $517,945 0.27% 88,086
Mega Nuveen, LLC $492,244 0.25% 83,715
Large MACKENZIE FINANCIAL CORP $484,153 0.25% 82,339
Large STATE OF WISCONSIN INVESTMENT BOARD $474,457 0.25% 80,690
Mega PRICE T ROWE ASSOCIATES INC /MD/ $470,476 0.24% 80,013
Mega Invesco Ltd. $463,261 0.24% 78,786
Large STRS OHIO $453,348 0.23% 77,100
Large Quantinno Capital Management LP $448,455 0.23% 76,268
Mega MILLENNIUM MANAGEMENT LLC $427,376 0.22% 72,683
Mid PINNACLE ASSOCIATES LTD $411,600 0.21% 70,000
Mega JANE STREET GROUP, LLC $410,741 0.21% 69,854
Mid Campbell & CO Investment Adviser LLC $361,284 0.19% 61,443
Large VOYA INVESTMENT MANAGEMENT LLC $357,827 0.19% 60,855
Mid WINTON GROUP Ltd $344,144 0.18% 58,528
Mega DEUTSCHE BANK AG\ Bank $342,668 0.18% 58,277
Small Kerrisdale Advisers, LLC $338,817 0.18% 57,622
Mega AMERIPRISE FINANCIAL INC $335,670 0.17% 57,087
Mega RHUMBLINE ADVISERS $293,406 0.15% 49,899
Mega CANADA PENSION PLAN INVESTMENT BOARD Pension $282,240 0.15% 48,000
Small ISTHMUS PARTNERS, LLC $255,174 0.13% 43,397
Large Schonfeld Strategic Advisors LLC $251,170 0.13% 42,716
Mega RAYMOND JAMES FINANCIAL INC $251,070 0.13% 42,699
Mega UBS Group AG $249,751 0.13% 42,475
Mega ALLIANCEBERNSTEIN L.P. $248,194 0.13% 42,210
Large Boston Partners $235,164 0.12% 39,994
Mid EXCHANGE TRADED CONCEPTS, LLC $232,301 0.12% 39,507
Small FOX RUN MANAGEMENT, L.L.C. $231,513 0.12% 39,373
Large COMMONWEALTH EQUITY SERVICES, LLC $227,244 0.12% 38,647
Small Inspire Advisors, LLC $214,067 0.11% 36,406
Mid Graham Capital Management, L.P. $211,874 0.11% 36,033
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $200,825 0.10% 34,154
Mid Atlantic Union Bankshares Corp $183,750 0.10% 31,250
Large ExodusPoint Capital Management, LP $183,015 0.09% 31,125
Large Vident Advisory, LLC $181,545 0.09% 30,875
Large FIFTH THIRD BANCORP Bank $178,728 0.09% 30,396
Small State of Wyoming $171,090 0.09% 29,097
Large Squarepoint Ops LLC $152,985 0.08% 26,018
Small MIRABELLA FINANCIAL SERVICES LLP $145,441 0.08% 24,735
Mega FRANKLIN RESOURCES INC $132,888 0.07% 22,600
Mid EP Wealth Advisors, LLC $123,327 0.06% 20,974
Mid Quadrature Capital Ltd $121,710 0.06% 20,699
Large OSAIC HOLDINGS, INC. $112,084 0.06% 19,062
Large MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. Mutual Fund $107,609 0.06% 18,301
Mid Brooklyn Investment Group $96,931 0.05% 16,485
Mega FMR LLC $95,231 0.05% 16,196
Large WEALTH ENHANCEMENT ADVISORY SERVICES, LLC $94,021 0.05% 15,990
Mega WELLS FARGO & COMPANY/MN $93,814 0.05% 15,955
Mid Aquatic Capital Management LLC $87,817 0.05% 14,935
Mega Vanguard Global Advisers, LLC $87,782 0.05% 14,929
Large TUDOR INVESTMENT CORP ET AL $86,965 0.04% 14,790
Mid Sequoia Financial Advisors, LLC $82,320 0.04% 14,000

Report a Problem

Category
Description
Email (optional, for follow-up)