Hudson Technologies HDSN Institutional Ownership

NASDAQ HDSN

$5.41 +0.01 (+0.09%)

As of: Oct 22, 2026 · 12:00 PM EDT

Institutions by Trading Activity

152 Institutions

Increased 72 47.4%

Unchanged 28 18.4%

Reduced 52 34.2%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

75.09%

▼-1.22 pp QoQ

Shares Held by Institutions

31.61Mn

of 42.09Mn outstanding

▼-2.14% QoQ

Shares Outstanding

42.09Mn

10.48Mn held outside 13F filers

Institutional Investors

152

filed 13F for Jun 2026

▼-7 vs prior quarter

Net Shares Added (QoQ)

-691.90K

distributed since last quarter

Value of Holdings

$167.51Mn

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

Updated Oct 11, 2026

Hudson Technologies Inc (NASDAQ:HDSN) had 152 institutional holders reporting a position on Form 13F for the quarter ended June 30, 2026.

Collectively, these holders controlled 75.09% of Hudson Technologies' outstanding shares in Q2 2026, down from 76.31% in Q1 2026.
Total holdings of HDSN shares fell 2.14% from Q1 2026, and the holder count rose 4.11% from Q2 2025.
Of the 152 holders of HDSN in Q2 2026, 72 added to their positions, 52 reduced their stakes and 28 left their positions unchanged.
In total, institutional investors held 31.61Mn shares of Hudson Technologies at the end of Q2 2026, down 691.9K from the prior quarter and down 910.78K from a year earlier.
As of June 30, 2026, the biggest holder of Hudson Technologies was Hartree Partners, LP with 4.41Mn shares, or 10.48% of shares outstanding.
The largest position increases in HDSN for Q2 2026 were by Hartree Partners, LP (+611.89K shares), Nuveen, LLC (+392.82K shares), Qube Research & Technologies Ltd (+350.97K shares), Jacobs Levy Equity Management, Inc (+327.66K shares) and Marshall Wace, LLP (+255.08K shares).
Among holders that kept a stake in Hudson Technologies, the biggest sellers in Q2 2026 were Public Employees Retirement System of Ohio (-358.6K shares), American Century Companies Inc (-318.31K shares), AQR Capital Management LLC (-182.4K shares), Dimensional Fund Advisors LP (-180.4K shares) and Two Sigma Investments, LP (-140.97K shares).
Per Business Quant, the top 10 investors in HDSN for the quarter ended June 30, 2026 were Hartree Partners, LP (4.41Mn shares), Westerly Capital Management, LLC (3.38Mn shares), BlackRock, Inc. (2.84Mn shares), Dimensional Fund Advisors LP (1.97Mn shares), Vanguard Capital Management LLC (1.65Mn shares), Renaissance Technologies LLC (1.44Mn shares), American Century Companies Inc (1.17Mn shares), Geode Capital Management, LLC (995.01K shares), State Street Corp (895.78K shares) and Arrowstreet Capital, Limited Partnership (777.99K shares).

Form 13F Holdings

152 Institutional Holders

Report period 30 Jun, 2026

Total shares held 31.61Mn

Of outstanding 75.09%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	Hartree Partners, LP	0001597857	4,411,889	10.48%	▲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	2.36%	▲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	1.36%	▲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	1.17%	▼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 152 holders