STATE OF WISCONSIN INVESTMENT BOARD

Position in HDSN — Hudson Technologies Inc /Ny

CIK 854157 MADISON, WI

Position in HDSN

as of Mar 31, 2026 · filed May 15, 2026 Compact

Position Value

$474,457

-$208,926 QoQ

Shares Held

80,690

-19.1% QoQ

Ownership

0.192%

of shares outstanding

% of Portfolio

0.00%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2024

9 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Basic Materials · as of Mar 31, 2026

STATE OF WISCONSIN INVESTMENT BOARD holds $388,426,800 across 35 Specialty Chemicals names. HDSN ranks #32 (0.1% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	LIN	Linde PLC	252,154	$125,007,867
2	SHW	Sherwin Williams Co	135,663	$43,486,774
3	ECL	Ecolab Inc.	138,121	$36,742,948
4	APD	Air Products & Chemicals, Inc.	119,203	$34,627,279
5	ESI	Element Solutions Inc	539,846	$18,430,342
6	ALB	Albemarle Corp	77,121	$13,845,533
7	DD	DuPont de Nemours, Inc.	283,335	$12,976,742
8	PPG	Ppg Industries Inc	120,180	$12,844,838

9 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$474,457	80,690	-19.1%	Shares	Sole	2026-05-15
2025-12-31	$683,383	99,764	+37.0%	Shares	Sole	2026-02-17
2025-09-30	$723,172	72,827	-27.3%	Shares	Sole	2025-11-14
2025-06-30	$813,599	100,197	+14.5%	Shares	Sole	2025-08-14
2025-03-31	$539,856	87,497	+29.8%	Shares	Sole	2025-05-15
2024-12-31	$376,008	67,385	+17.5%	Shares	Sole	2025-02-14
2024-09-30	$478,190	57,337	-48.4%	Shares	Sole	2024-11-14
2024-06-30	$977,026	111,152	+174.2%	Shares	Sole	2024-08-14
2024-03-31	$446,246	40,531	—	Shares	Sole	2024-05-14
No filing history on record for this holder in this stock.