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ESSEX INVESTMENT MANAGEMENT CO LLC

Position in FTEK — Fuel Tech, Inc.

CIK 201772 BOSTON, MA

Position in FTEK

as of Mar 31, 2026 · filed May 11, 2026
Position Value
$94,245
-$26,265 QoQ
Shares Held
77,250
0.0% QoQ
Ownership
0.248%
of shares outstanding
% of Portfolio
0.02%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Sep 2022
15 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in FTEK Over Time

Shares Held

Position Value (USD)

Position in Pollution & Treatment Controls

Industrials · as of Mar 31, 2026

ESSEX INVESTMENT MANAGEMENT CO LLC holds $11,604,662 across 4 Pollution & Treatment Controls names. FTEK ranks #4 (0.8% of the industry book) .

# Ticker Company Shares Value (USD) Open
4 FTEK
Fuel Tech, Inc.
This page
77,250 $94,245

All Filings in FTEK

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15 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $94,245 77,250
2025-12-31 $120,510 77,250
2025-09-30 $231,750 77,250
2025-06-30 $194,670 77,250
2025-03-31 $130,453 124,241
2024-12-31 $116,691 111,135
2024-09-30 $145,860 138,915
2024-06-30 $148,639 138,915
2024-03-31 $485,402 401,159
2023-12-31 $295,465 281,396
2023-09-30 $452,784 383,716
2023-06-30 $539,510 405,647
2023-03-31 $507,184 396,238
2022-12-31 $503,222 396,238
2022-09-30 $342,523 292,755