Hudson Technologies HDSN Institutional Ownership

NASDAQ HDSN

$5.23 +0.04 (+0.77%)

At close: Sep 22, 2026 · 4:00 PM EDT

Institutions by Trading Activity

153 Institutions

Increased 73 47.7%

Unchanged 28 18.3%

Reduced 52 34.0%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

75.38%

▼-0.93 pp QoQ

Shares Held by Institutions

31.71Mn

of 42.07Mn outstanding

▲+7.19% QoQ

Shares Outstanding

42.07Mn

10.36Mn held outside 13F filers

Institutional Investors

153

filed 13F for Jun 2026

▼-6 vs prior quarter

Net Shares Added (QoQ)

+2.13Mn

accumulated since last quarter

Value of Holdings

$164.60Mn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Quarter ending 30 Jun, 2026

Hudson Technologies Inc /Ny (NASDAQ:HDSN) has 153 institutional investors with active 13F positions as of June 2026.

They owned 75.4% of outstanding stock in June 2026, down from 76.3% the prior quarter.
Their total shares held in HDSN increased 7.19% from the prior quarter, while the number of investors in Hudson Technologies increased 3.38% year over year.
Among the 153 funds, 73 bought more Hudson Technologies shares, 52 sold down, and 28 held their ground.
In total, institutional investors held 31.71Mn shares in Hudson Technologies as of June 2026, up by 2.13Mn shares quarter on quarter, and down 1.98Mn shares year over year.
As of June 30, 2026, Hartree Partners, LP held the largest stake in Hudson Technologies with 4.41Mn shares, accounting for 10.49% of total shares outstanding.
The biggest buyers of Hudson Technologies for the quarter ending June 2026 included Hartree Partners, LP (611.89K), Nuveen, LLC (392.82K), Qube Research & Technologies Ltd (350.97K), JACOBS LEVY EQUITY MANAGEMENT, INC (327.66K), Ancora Advisors LLC (303.38K).
The biggest sellers of Hudson Technologies for the quarter ending June 2026 included PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO (358.6K), AMERICAN CENTURY COMPANIES INC (318.31K), AQR CAPITAL MANAGEMENT LLC (182.4K), DIMENSIONAL FUND ADVISORS LP (180.4K), TWO SIGMA INVESTMENTS, LP (140.96K).
Hudson Technologies's 10 largest shareholders as of June 2026 include Hartree Partners, LP (4.41Mn), WESTERLY CAPITAL MANAGEMENT, LLC (3.38Mn), BlackRock, Inc. (2.84Mn), DIMENSIONAL FUND ADVISORS LP (1.97Mn), VANGUARD CAPITAL MANAGEMENT LLC (1.65Mn), RENAISSANCE TECHNOLOGIES LLC (1.44Mn), AMERICAN CENTURY COMPANIES INC (1.17Mn), GEODE CAPITAL MANAGEMENT, LLC (995.01K), State Street Corp (895.78K), ARROWSTREET CAPITAL, LIMITED PARTNERSHIP (777.99K) per Business Quant data.

Form 13F Holdings

153 Institutional Holders

Report period 30 Jun, 2026

Total shares held 31.71Mn

Of outstanding 75.38%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	Hartree Partners, LP	0001597857	4,411,889	10.49%	▲611,889	+16.10%	$25.32Mn
2	WESTERLY CAPITAL MANAGEMENT, LLC	0001546172	3,380,000	8.03%	▲205,000	+6.46%	$19.40Mn
3	BlackRock, Inc.	0002012383	2,840,272	6.75%	▼22,267	-0.78%	$16.30Mn
4	DIMENSIONAL FUND ADVISORS LP	0000354204	1,967,914	4.68%	▼180,397	-8.40%	$11.29Mn
5	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	1,654,259	3.93%	▼5,887	-0.35%	$9.50Mn
6	RENAISSANCE TECHNOLOGIES LLC	0001037389	1,442,115	3.43%	▼62,135	-4.13%	$8.28Mn
7	AMERICAN CENTURY COMPANIES INC	0000748054	1,169,462	2.78%	▼318,312	-21.40%	$6.71Mn
8	GEODE CAPITAL MANAGEMENT, LLC	0001214717	995,011	2.37%	▲46,465	+4.90%	$5.71Mn
9	State Street Corp	0000093751	895,776	2.13%	▼2,097	-0.23%	$5.14Mn
10	ARROWSTREET CAPITAL, LIMITED PARTNERSHIP	0001164508	777,989	1.85%	▼103,246	-11.72%	$4.47Mn
11	CASPIAN CAPITAL LP	0001518999	728,306	1.73%	0	0.00%	$4.18Mn
12	Qube Research & Technologies Ltd	0001729829	721,847	1.72%	▲350,971	+94.63%	$4.14Mn
13	CITADEL ADVISORS LLC	0001423053	574,266	1.37%	▲161,516	+39.13%	$3.30Mn
14	JACOBS LEVY EQUITY MANAGEMENT, INC	0000884414	506,591	1.20%	▲327,658	+183.12%	$2.91Mn
15	BRIDGEWAY CAPITAL MANAGEMENT, LLC	0001107261	494,432	1.18%	▼3,677	-0.74%	$2.84Mn
16	Nuveen, LLC	0001871926	476,540	1.13%	▲392,825	+469.24%	$2.74Mn
17	MARSHALL WACE, LLP	0001318757	474,354	1.13%	▲255,083	+116.33%	$2.72Mn
18	D. E. Shaw & Co., Inc.	0001009207	409,591	0.97%	▲50,909	+14.19%	$2.35Mn
19	Morgan Stanley	0000895421	367,159	0.87%	▼104,788	-22.20%	$2.11Mn
20	Russell Investments Group, Ltd.	0001692234	362,489	0.86%	▲208,096	+134.78%	$2.08Mn

Showing 1 to 20 of 153 holders