Hudson Technologies Inc /Ny (HDSN) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

44,578,431Shares Outstanding

4,520,280Shares held by institutions

$32,726,827Value of institutional holdings

72.75%Institutional ownership %

1.94%Shares Changed QoQ

158No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

The institutional landscape for Hudson Technologies Inc /Ny (NASDAQ:HDSN) includes 158 filers as of the latest reporting cycle ending December 2025.

Hudson Technologies saw its institutional ownership percentage fell to 72.8% in December 2025 from 74.6% in September 2025.
Quarterly data indicates a 1.94% shift in institutional share volume, and the annual owner count reflects a decrease of 5.39%.
Among the 158 institutional holders of Hudson Technologies, 66 added to their stakes while 65 trimmed their positions and 27 held steady.
The aggregate institutional position in Hudson Technologies now stands at 32.43Mn shares as of December 2025, after investors increased their holdings (up by 617.41K shares quarter on quarter which is up 2.06Mn shares year over year).
With 3.80Mn shares, Hartree Partners, LP commands the largest institutional position in Hudson Technologies as of December 31, 2025, equating to 8.52% of the company.
Among the most significant buyers of Hudson Technologies during December 2025 were CASPIAN CAPITAL LP (728.31K), WESTERLY CAPITAL MANAGEMENT, LLC (660.00K), MARSHALL WACE, LLP (339.54K), SEGALL BRYANT & HAMILL, LLC (180.35K), LAZARD ASSET MANAGEMENT LLC (170.96K).
Leading sellers of Hudson Technologies stock in December 2025 included ROYAL BANK OF CANADA (801.37K), D. E. Shaw & Co., Inc. (239.03K), BANK OF AMERICA CORP /DE/ (195.77K), TUDOR INVESTMENT CORP ET AL (178.01K), MILLENNIUM MANAGEMENT LLC (166.90K).
The top 10 institutional holders of Hudson Technologies for the quarter ending December 2025 included Hartree Partners, LP (3.80Mn), BlackRock, Inc. (2.91Mn), WESTERLY CAPITAL MANAGEMENT, LLC (2.55Mn), VANGUARD GROUP INC (2.34Mn), DIMENSIONAL FUND ADVISORS LP (2.04Mn), RENAISSANCE TECHNOLOGIES LLC (1.70Mn), AMERICAN CENTURY COMPANIES INC (1.39Mn), NEW SOUTH CAPITAL MANAGEMENT INC (1.28Mn), ARROWSTREET CAPITAL, LIMITED PARTNERSHIP (982.82K), GEODE CAPITAL MANAGEMENT, LLC (943.15K).

158 Institutional Holders

4,520,280 Total Shares Held

Rows:

Download Data

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
Hartree Partners, LP	31 Dec, 2025	3,800,000	0	0.00%	$26,030,000.00
BlackRock, Inc.	31 Dec, 2025	2,913,869	50,596	1.77%	$19,960,002.00
WESTERLY CAPITAL MANAGEMENT, LLC	31 Dec, 2025	2,550,000	660,000	34.92%	$17,467,500.00
VANGUARD GROUP INC	31 Dec, 2025	2,338,710	-34,471	-1.45%	$16,020,164.00
DIMENSIONAL FUND ADVISORS LP	31 Dec, 2025	2,043,151	33,670	1.68%	$13,995,585.00
RENAISSANCE TECHNOLOGIES LLC	31 Dec, 2025	1,697,250	-99,600	-5.54%	$11,626,163.00
AMERICAN CENTURY COMPANIES INC	31 Dec, 2025	1,386,683	112,793	8.85%	$9,498,779.00
NEW SOUTH CAPITAL MANAGEMENT INC	31 Dec, 2025	1,283,528	-50,809	-3.81%	$8,792,167.00
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP	31 Dec, 2025	982,819	-128,984	-11.60%	$6,732,310.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	943,154	-11,272	-1.18%	$6,462,005.00
STATE STREET CORP	31 Dec, 2025	894,064	209	0.02%	$6,124,338.00
CASPIAN CAPITAL LP	31 Dec, 2025	728,306	728,306	0.00%	$4,988,896.00
MORGAN STANLEY	31 Dec, 2025	705,577	-87,150	-10.99%	$4,833,204.00
D. E. Shaw & Co., Inc.	31 Dec, 2025	582,780	-239,029	-29.09%	$3,992,043.00
MARSHALL WACE, LLP	31 Dec, 2025	465,130	339,543	270.36%	$3,186,141.00
LAZARD ASSET MANAGEMENT LLC	31 Dec, 2025	431,769	170,964	65.55%	$2,957,618.00
NORTHERN TRUST CORP	31 Dec, 2025	391,889	-24,618	-5.91%	$2,684,440.00
BRIDGEWAY CAPITAL MANAGEMENT, LLC	31 Dec, 2025	378,255	17,607	4.88%	$2,591,047.00
AQR CAPITAL MANAGEMENT LLC	31 Dec, 2025	339,352	-5,932	-1.72%	$2,324,562.00
683 Capital Management, LLC	31 Dec, 2025	335,000	-15,000	-4.29%	$2,294,750.00

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