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The company

Hudson Technologies, Inc.

HDSN · Nasdaq

IndustrialsDistributors & WholesaleNot moving yet

HDSN stood above a rising 150-day average in 2 of the last 52 weekly readings, and has been out of that trend for the last 50 weeks. It is 9.3% below that average now. Distributors & Wholesale: 39% of its 77 stocks in an uptrend (+8 points in four weeks); Industrials: 26% (−5 points in four weeks).

SEC filings

Statistics

Rotation: Not moving yet
Weeks in an uptrend: out for 50
Industry in uptrend: 39% +8 in 4 wk
Insider buys, 12 months: $13.5M
Insider sales, 12 months: $7.2M
Officials’ trades on record: 0
Institutions holding: 145 (-5)

In the rotation

Each square a week: lit when it closed above a rising 150-day average. 2 of 52 weeks.

20 Apr – 19 Oct

Distributors & Wholesale: A minority of its stocks are in an uptrend and the share has been climbing. Industrials: A minority of its stocks are in an uptrend and the share has been slipping.

Money in and out

1 Nov 2024 – 1 Oct 2026

Open-market buys above the line and sales below, in dollars.

Congress and officials

No member of Congress or official has disclosed a trade in it.

Insiders

Buy orders, 12 months26

Sale orders, 12 months2

Buyers · sellers10 · 1

Who	Did	Shares	Traded
Hartree Partners, Lp10% owner	bought	118,549at $5.10	24 Sep 2026filed 28 Sep 2026
Hartree Partners, Lp10% owner	bought	11,013at $5.10	23 Sep 2026filed 23 Sep 2026
Hartree Partners, Lp10% owner	bought	2,502at $5.10	21 Sep 2026filed 23 Sep 2026
Hartree Partners, Lp10% owner	bought	11,136at $5.10	16 Sep 2026filed 18 Sep 2026
Hartree Partners, Lp10% owner	bought	5,317at $5.10	2 Sep 2026filed 4 Sep 2026
Hartree Partners, Lp10% owner	bought	91,166at $5.50	25 Aug 2026filed 26 Aug 2026
Hartree Partners, Lp10% owner	bought	9,446at $5.50	24 Aug 2026filed 26 Aug 2026
Hartree Partners, Lp10% owner	bought	5,198at $5.50	12 Aug 2026filed 14 Aug 2026
Hartree Partners, Lp10% owner	bought	52,104at $5.99	29 Jul 2026filed 31 Jul 2026
Hartree Partners, Lp10% owner	bought	47,708at $5.99	21 Jul 2026filed 22 Jul 2026
Hartree Partners, Lp10% owner	bought	17,842at $5.99	20 Jul 2026filed 22 Jul 2026
Hartree Partners, Lp10% owner	bought	600at $5.99	7 Jul 2026filed 8 Jul 2026

Lines filed since 2 January 2026, newest first; every insider’s older lines are on their own page.

Institutions

Holders145-5 on the quarter

New · exited28 · 32

Reported value$180.2M

Quarter to 30 Jun 2026, against 31 Mar 2026; newest filing 31 Aug 2026.

Manager	Shares	Change
Hartree Partners, LPadded · filed 12 Aug 2026	4,411,889$25.3M	+611,889+16.1%
WESTERLY CAPITAL MANAGEMENT, LLCadded · filed 14 Aug 2026	3,380,000$19.4M	+205,000+6.5%
BlackRock, Inc.reduced · filed 7 Aug 2026	2,840,272$16.3M	-22,267−0.8%
DIMENSIONAL FUND ADVISORS LPreduced · filed 11 Aug 2026	1,967,914$11.3M	-180,397−8.4%
VANGUARD CAPITAL MANAGEMENT LLCreduced · filed 13 Aug 2026	1,654,259$9.5M	-5,887−0.4%
RENAISSANCE TECHNOLOGIES LLCreduced · filed 13 Aug 2026	1,442,115$8.3M	-62,135−4.1%
AMERICAN CENTURY COMPANIES INCreduced · filed 12 Aug 2026	1,169,462$6.7M	-318,312−21.4%
GEODE CAPITAL MANAGEMENT, LLCadded · filed 12 Aug 2026	995,011$5.7M	+46,465+4.9%
STATE STREET CORPreduced · filed 7 Aug 2026	895,776$5.1M	-2,097−0.2%
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPreduced · filed 13 Aug 2026	777,989$4.5M	-103,246−11.7%