HDSN · Hudson Technologies Inc /Ny · Holdings

$5.41 +0.06 (+1.03%) At close · Sep 11

Russell 2000 member Rebalance outlook locked

Market Cap

$227.49M

42.09M

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.

Use institutional holdings through the 13F API or MCP →

Quarter:

Holders: 151

Total Value: $181,652,488

Total Shares: 31,647,679

Showing 1–100 of 153 holdings by value · page 1 of 2

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 151 13F filers · Δ vs Mar 31, 2026

Top Holder

13.9%

+2.4 pts

Top 5

45.0%

+3.6 pts

Top 10

61.7%

+1.8 pts

HHI

552

Broadly held+72

Quarterly Activity

vs Mar 31, 2026

New

Increased

Decreased

Sold Out

Unchanged

Holder count: -9

Institutional value: -6.2%

Shares held: -3.9%

Top Buyers

vs Mar 31, 2026

Institution	Added	Now Holds
Small Hartree Partners, LP	+611,889	4,411,889
Mega Nuveen, LLC	+392,825	476,540
Mega Qube Research & Technologies Ltd	+350,971	721,847
Large JACOBS LEVY EQUITY MANAGEMENT, INC	+327,658	506,591
Large MARSHALL WACE, LLP	+255,083	474,354

Top Sellers

vs Mar 31, 2026

Institution	Sold	Now Holds
Large PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO	−358,600	51,499
Mega AMERICAN CENTURY COMPANIES INC	−318,312	1,169,462
Mega AQR CAPITAL MANAGEMENT LLC	−182,401	161,903
Mega DIMENSIONAL FUND ADVISORS LP	−180,397	1,967,914
Mega TWO SIGMA INVESTMENTS, LP	−140,965	131,960

Top New Positions

vs Mar 31, 2026

Institution	Acquired	Value (USD)
Mid Ancora Advisors LLC	303,380	$1,741,401
Mid BAILARD, INC.	56,574	$324,734
Small Odyssean, LLC	50,673	$290,863
Large Sanctuary Advisors, LLC	46,344	$266,014
Large Point72 Asset Management, L.P.	45,731	$262,495

Top Sold-Out Positions

vs Mar 31, 2026

Institution	Previously Held	Last Value (USD)
Mid NEW SOUTH CAPITAL MANAGEMENT INC	1,241,223	$7,298,390
Mid SEGALL BRYANT & HAMILL, LLC	628,341	$3,694,645
Large LAZARD ASSET MANAGEMENT LLC	325,915	$1,916,380
Large O'SHAUGHNESSY ASSET MANAGEMENT, LLC	170,825	$1,004,451
Mid GRIMES & Co WEALTH MANAGEMENT, LLC	158,618	$932,673

Filter: New 25 Increased 46 Reduced 52 Sold out 34 Unchanged 28

Showing 100 of 153

All Common Calls Puts

Compact Export CSV

Holder

Value (USD)

% of 13F

Hartree Partners, LP

$25,324,242

13.94%

4,411,889

WESTERLY CAPITAL MANAGEMENT, LLC

$19,401,200

10.68%

3,380,000

BlackRock, Inc.

$16,303,159

8.97%

2,840,272

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BLACKROCK FINANCIAL MANAGEMENT INC/DE	39,725	$228,021	1.4%	Sole
BlackRock Asset Management Canada Ltd	492	$2,824	0.0%	Sole
BlackRock Investment Management, LLC	109,896	$630,803	3.9%	Sole
BLACKROCK ADVISORS LLC	80,542	$462,311	2.8%	Sole
BlackRock Fund Advisors	1,523,872	$8,747,025	53.7%	Sole
BlackRock Institutional Trust Company, N.A.	1,083,837	$6,221,224	38.2%	Sole
BlackRock Japan Co. Ltd	213	$1,222	0.0%	Sole
Aperio Group, LLC	1,695	$9,729	0.1%	Sole

DIMENSIONAL FUND ADVISORS LP

$11,295,824

6.22%

1,967,914

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Dimensional Fund Advisors Ltd.	7,170	$41,155	0.4%	Defined
DFA Australia Ltd.	17,518	$100,553	0.9%	Defined
Dimensional Ireland Ltd	94,063	$539,921	4.8%	Defined
Held directly	1,849,163	$10,614,195	94.0%	Sole

VANGUARD CAPITAL MANAGEMENT LLC

$9,495,446

5.23%

1,654,259

RENAISSANCE TECHNOLOGIES LLC

$8,277,740

4.56%

1,442,115

AMERICAN CENTURY COMPANIES INC

$6,712,711

3.70%

1,169,462

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
AMERICAN CENTURY INVESTMENT MANAGEMENT INC	1,169,462	$6,712,711	100.0%	Defined

GEODE CAPITAL MANAGEMENT, LLC

$5,711,362

3.14%

995,011

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
GEODE CAPITAL MANAGEMENT TRUST COMPANY, LLC	142,893	$820,205	14.4%	Defined
Held directly	852,118	$4,891,157	85.6%	Defined

STATE STREET CORP

$5,141,754

2.83%

895,776

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
STATE STREET GLOBAL ADVISORS EUROPE LIMITED joint	895,776	$5,141,754	100.0%	Defined

ARROWSTREET CAPITAL, LIMITED PARTNERSHIP

$4,465,656

2.46%

777,989

CASPIAN CAPITAL LP

$4,180,476

2.30%

728,306

Qube Research & Technologies Ltd

$4,143,401

2.28%

721,847

CITADEL ADVISORS LLC

$3,296,286

1.81%

574,266

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	9,965	$57,199	1.7%	Defined
Held directly	564,301	$3,239,087	98.3%	Defined

JACOBS LEVY EQUITY MANAGEMENT, INC

$2,907,832

1.60%

506,591

BRIDGEWAY CAPITAL MANAGEMENT, LLC

$2,838,039

1.56%

494,432

Nuveen, LLC

$2,735,337

1.51%

476,540

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Nuveen Asset Management, LLC joint	352,068	$2,020,869	73.9%	Defined
TIAA CREF INVESTMENT MANAGEMENT LLC joint	41,890	$240,448	8.8%	Defined
TEACHERS ADVISORS, LLC joint	82,582	$474,020	17.3%	Defined

MARSHALL WACE, LLP

$2,722,791

1.50%

474,354

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Marshall Wace North America L.P. joint	474,354	$2,722,791	100.0%	Other

D. E. Shaw & Co., Inc.

$2,351,052

1.29%

409,591

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
D. E. SHAW & CO, L.P.	359,973	$2,066,245	87.9%	Defined
D. E. Shaw Investment Management, L.L.C. joint	49,618	$284,807	12.1%	Defined

MORGAN STANLEY

$2,107,489

1.16%

367,159

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
MORGAN STANLEY & CO INTERNATIONAL PLC	5,431	$31,173	1.5%	Defined
MORGAN STANLEY & CO. LLC	10,487	$60,195	2.9%	Defined
MORGAN STANLEY CAPITAL SERVICES, LLC	316,348	$1,815,837	86.2%	Defined
MORGAN STANLEY SMITH BARNEY LLC	1,843	$10,578	0.5%	Defined
Morgan Stanley Bank, N.A.	39	$223	0.0%	Defined
PARAMETRIC PORTFOLIO ASSOCIATES LLC	8,011	$45,983	2.2%	Defined
EATON VANCE MANAGEMENT	25,000	$143,500	6.8%	Defined

Russell Investments Group, Ltd.

$2,080,682

1.15%

362,489

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Russell Investment Management, LLC joint	105,431	$605,172	29.1%	Defined
Russell Investments Canada Limited	1,112	$6,382	0.3%	Defined
Russell Investments Capital, LLC joint	89,908	$516,071	24.8%	Other
Russell Investments France SAS	56,699	$325,452	15.6%	Defined
Russell Investments Limited	1,241	$7,123	0.3%	Defined
Russell Investments Trust Company joint	108,098	$620,482	29.8%	Other

683 Capital Management, LLC

$1,865,500

1.03%

325,000

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
683 Capital Partners, LP	325,000	$1,865,500	100.0%	Defined

JB CAPITAL PARTNERS LP

$1,757,588

0.97%

306,200

Ancora Advisors LLC

$1,741,401

0.96%

303,380

Kerrisdale Advisers, LLC

$1,721,862

0.95%

299,976

VANGUARD PORTFOLIO MANAGEMENT LLC

$1,667,682

0.92%

290,537

NORTHERN TRUST CORP

$1,618,742

0.89%

282,011

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
NORTHERN TRUST CO joint	276,515	$1,587,195	98.1%	Defined
DWS INVESTMENT MANAGEMENT AMERICAS, INC joint	5,496	$31,547	1.9%	Other

VANGUARD FIDUCIARY TRUST CO

$1,406,707

0.77%

245,071

KBC Group NV

$1,190,854

0.66%

207,466

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
KBC Bank NV joint	207,466	$1,190,854	100.0%	Defined

Empowered Funds, LLC

$1,181,739

0.65%

205,878

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Bridgeway Capital Management, LLC	205,878	$1,181,739	100.0%	Other

Bank of New York Mellon Corp

$1,175,429

0.65%

204,779

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Mellon Investments Corporation	66,513	$381,784	32.5%	Defined
The Bank of New York Mellon	57,671	$331,031	28.2%	Defined
BNY Mellon Advisors, Inc. joint	15	$86	0.0%	Other
Newton Investment Management North America, LLC	80,579	$462,523	39.3%	Defined
Held directly	1	$5	0.0%	Defined

KESTREL INVESTMENT MANAGEMENT CORP

$1,152,305

0.63%

200,750

GOLDMAN SACHS GROUP INC

$1,014,303

0.56%

176,708

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
GOLDMAN SACHS & CO. LLC	91,857	$527,259	52.0%	Defined
GOLDMAN SACHS ASSET MANAGEMENT, L.P.	84,851	$487,044	48.0%	Defined

Pacific Ridge Capital Partners, LLC

$1,001,853

0.55%

174,539

MARATHON CAPITAL MANAGEMENT

$994,885

0.55%

173,325

AQR CAPITAL MANAGEMENT LLC

$929,321

0.51%

161,903

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Arax Advisory Partners	945	$5,424	0.6%	Other
HALBERT HARGROVE GLOBAL ADVISORS, LLC	1,094	$6,279	0.7%	Other
Stokes Family Office, LLC	667	$3,828	0.4%	Other
Held directly	159,197	$913,790	98.3%	Defined

FIRST TRUST ADVISORS LP

$871,383

0.48%

151,809

Numerai GP LLC

$862,457

0.47%

150,254

CREDIT AGRICOLE S A

$803,600

0.44%

140,000

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Credit Agricole Corporate & Investment Bank joint	140,000	$803,600	100.0%	Defined

WEDGE CAPITAL MANAGEMENT L L P/NC

$789,927

0.43%

137,618

TWO SIGMA INVESTMENTS, LP

$757,450

0.42%

131,960

PRUDENTIAL FINANCIAL INC

$698,787

0.38%

121,740

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
PGIM Quantitative Solutions LLC	121,740	$698,787	100.0%	Defined

Inspire Investing, LLC

$684,156

0.38%

119,191

CHARLES SCHWAB INVESTMENT MANAGEMENT INC

$625,734

0.34%

109,013

Quantinno Capital Management LP

$613,973

0.34%

106,964

AMERIPRISE FINANCIAL INC

$564,781

0.31%

98,394

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Columbia Management Investment Advisers, LLC	98,394	$564,781	100.0%	Defined

PRICE T ROWE ASSOCIATES INC /MD/

$550,810

0.30%

95,960

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
T. Rowe Price International Ltd	95,960	$550,810	100.0%	Defined

JPMORGAN CHASE & CO

$538,059

0.30%

93,739

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
JPMorgan Chase Bank, N.A.	20,927	$120,120	22.3%	Defined
J.P. Morgan Investment Management Inc.	72,258	$414,760	77.1%	Defined
J.P. Morgan Securities plc	554	$3,179	0.6%	Defined

Invesco Ltd.

$402,229

0.22%

70,075

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Invesco Advisers, Inc. joint	5,070	$29,101	7.2%	Defined
Invesco Trust Co joint	14,964	$85,893	21.4%	Defined
Invesco Capital Management LLC	50,041	$287,235	71.4%	Defined

PINNACLE ASSOCIATES LTD

$401,800

0.22%

70,000

Squarepoint Ops LLC

$380,102

0.21%

66,220

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Squarepoint Capital LLP	66,220	$380,102	100.0%	Defined

DEUTSCHE BANK AG\

$350,811

0.19%

61,117

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
DWS Investments UK Ltd	61,117	$350,811	100.0%	Defined

UBS Group AG

$335,032

0.18%

58,368

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
UBS Financial Services Inc	1,984	$11,388	3.4%	Defined
UBS AG	54,873	$314,971	94.0%	Defined
UBS Securities LLC	1,511	$8,673	2.6%	Defined

BANK OF AMERICA CORP /DE/

$332,380

0.18%

57,906

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BANK OF AMERICA NA	57,906	$332,380	100.0%	Defined

ISTHMUS PARTNERS, LLC

$329,797

0.18%

57,456

BAILARD, INC.

$324,734

0.18%

56,574

Inspire Advisors, LLC

$311,389

0.17%

54,249

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Inspire Investing, LLC	54,249	$311,389	100.0%	Defined

PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO

$295,604

0.16%

51,499

Odyssean, LLC

$290,863

0.16%

50,673

RHUMBLINE ADVISERS

$287,229

0.16%

50,040

Schonfeld Strategic Advisors LLC

$284,290

0.16%

49,528

ALLIANCEBERNSTEIN L.P.

$268,115

0.15%

46,710

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Equitable Holdings, Inc.	46,710	$268,115	100.0%	Defined

Sanctuary Advisors, LLC

$266,014

0.15%

46,344

EXCHANGE TRADED CONCEPTS, LLC

$264,659

0.15%

46,108

Point72 Asset Management, L.P.

$262,495

0.14%

45,731

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$258,844

0.14%

45,095

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	16,816	$96,523	37.3%	Other
G1 EXECUTION SERVICES, LLC	28,279	$162,321	62.7%	Other

COMMONWEALTH EQUITY SERVICES, LLC

$243,972

0.13%

42,504

CANADA PENSION PLAN INVESTMENT BOARD

$243,950

0.13%

42,500

EntryPoint Capital, LLC

$192,066

0.11%

33,461

Campbell & CO Investment Adviser LLC

$189,391

0.10%

32,995

WELLS FARGO & COMPANY/MN

$188,719

0.10%

32,878

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
WELLS FARGO BANK N A	31,272	$179,501	95.1%	Defined
WELLS FARGO ADVISORS FINANCIAL NETWORK, LLC	1,606	$9,218	4.9%	Defined

Atlantic Union Bankshares Corp

$179,375

0.10%

31,250

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Atlantic Union Bankshares Corp	31,250	$179,375	100.0%	Sole

Vident Advisory, LLC

$177,222

0.10%

30,875

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Acuitas Investments, LLC	30,875	$177,222	100.0%	Defined

RAYMOND JAMES FINANCIAL INC

$174,352

0.10%

30,375

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
RAYMOND JAMES & ASSOCIATES	3,200	$18,368	10.5%	Defined
Raymond James Financial Services Advisors, Inc.	27,175	$155,984	89.5%	Defined

STATE OF WISCONSIN INVESTMENT BOARD

$169,617

0.09%

29,550

Jump Financial, LLC

$160,392

0.09%

27,943

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Jump Trading Holdings, LLC	343	$1,968	1.2%	Defined
Leap GP LLC joint	27,600	$158,424	98.8%	Defined

Park Capital Management, LLC / WI

$155,427

0.09%

27,078

Graham Capital Management, L.P.

$153,464

0.08%

26,736

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$149,240

0.08%

26,000

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	26,000	$149,240	100.0%	Other

FIFTH THIRD BANCORP

$141,117

0.08%

24,585

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Fifth Third Bank, National Association	24,585	$141,117	100.0%	Defined

MetLife Investment Management, LLC

$129,672

0.07%

22,591

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
METLIFE INC	22,591	$129,672	100.0%	Defined

XTX Topco Ltd

$121,395

0.07%

21,149

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
XTX EXECUTION SERVICES LLC joint	21,149	$121,395	100.0%	Defined

CITIGROUP INC

$108,387

0.06%

18,883

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citigroup Financial Products Inc. joint	18,883	$108,387	100.0%	Defined

Connor, Clark & Lunn Investment Management Ltd.

$106,454

0.06%

18,546

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Manager 1	18,546	$106,454	100.0%	Sole

Boston Partners

$104,588

0.06%

18,221

Symmetry Partners, LLC

$103,509

0.06%

18,033

MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.

$98,687

0.05%

17,193

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Global X Management CO LLC joint	17,193	$98,687	100.0%	Defined

Empirical Asset Management, LLC

$97,918

0.05%

17,059

EP Wealth Advisors, LLC

$96,862

0.05%

16,875

OSAIC HOLDINGS, INC.

$96,483

0.05%

16,809

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
OSAIC WEALTH, INC.	16,809	$96,483	100.0%	Defined

Commonwealth Financial Services, LLC

$96,018

0.05%

16,728

Fifth Third Wealth Advisors LLC

$94,394

0.05%

16,445

Quadrature Capital Ltd

$94,107

0.05%

16,395

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Quadrature US Inc.	16,395	$94,107	100.0%	Other

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$92,988

0.05%

16,200

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	16,200	$92,988	100.0%	Other

WEALTH ENHANCEMENT ADVISORY SERVICES, LLC

$86,863

0.05%

15,133

MERCER GLOBAL ADVISORS INC /ADV

$86,564

0.05%

15,081

Vanguard Global Advisers, LLC

$85,692

0.05%

14,929

HUB Investment Partners, LLC

$85,629

0.05%

14,918

Inscription Capital, LLC

$80,543

0.04%

14,032

State of Wyoming

$77,507

0.04%

13,503

BROWN BROTHERS HARRIMAN & CO

$76,129

0.04%

13,263

Key facts CIK 925528 CUSIP 444144109 13F (30d) 46 filings 46 filers Visit website