Fuel Tech, Inc. (FTEK) Institutional Ownership

Institutions by Trading Activity

31,293,000Shares Outstanding

7,566,582Shares held by institutions

$10,441,883Value of institutional holdings

24.18%Institutional ownership %

22.20%Shares Changed QoQ

45No. of institutional investors

Fuel Tech, Inc. (NASDAQ:FTEK) appears in 45 institutional 13F filings for the quarter ending December 2025.

Their combined ownership stood at 24.2% of outstanding shares in December 2025, up from 22.7% in September 2025.
Their total shares held in FTEK increased 22.2% quarter over quarter, and separately, investors owning Fuel Tech increased 15.38% from a year ago.
Among the 45 funds, 22 bought more Fuel Tech shares, 11 sold down, and 12 held their ground.
Altogether, these fund groups held 7.57Mn shares in FTEK by December 2025, up by 1.37Mn shares quarter on quarter, and up 600.74K shares year over year.
As of December 31, 2025, the biggest holder of Fuel Tech is GRACE & WHITE INC /NY at 1.54Mn shares, representing 4.93% of shares outstanding.
The most significant purchases of FTEK for the quarter ending December 2025 came from GRACE & WHITE INC /NY (55.42K), LexAurum Advisors, LLC (14.16K), Founders Capital Management (1.0K).
According to Business Quant data, leading holders of FTEK for December 2025 are GRACE & WHITE INC /NY (1.54Mn), LexAurum Advisors, LLC (14.16K), Founders Capital Management (6.0K).

7,566,582 Total Shares Held

Rows:

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
GRACE & WHITE INC /NY	31 Dec, 2025	1,485,883	-5,800	-0.39%	$2,317,977.00
RENAISSANCE TECHNOLOGIES LLC	31 Dec, 2025	1,147,995	249,089	27.71%	$1,790,872.00
VANGUARD GROUP INC	31 Dec, 2025	1,126,003	112,139	11.06%	$1,756,565.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	518,939	-4,879	-0.93%	$809,643.00
CITADEL ADVISORS LLC	31 Dec, 2025	504,017	376,994	296.79%	$786,266.00
BlackRock, Inc.	31 Dec, 2025	410,364	0	0.00%	$640,168.00
Peapod Lane Capital LLC	31 Dec, 2025	359,643	2,705	0.76%	$561,043.00
Us Bancorp \De\	31 Dec, 2025	304,776	0	0.00%	$475,451.00
JANE STREET GROUP, LLC	31 Dec, 2025	260,782	23,860	10.07%	$406,820.00
SUSQUEHANNA INTERNATIONAL GROUP, LLP	31 Dec, 2025	237,976	27,990	13.33%	$371,243.00
XTX Topco Ltd	31 Dec, 2025	178,303	178,303	0.00%	$278,153.00
Beartown Capital Management, LLC	31 Dec, 2025	160,027	160,027	0.00%	$249,642.00
TWO SIGMA INVESTMENTS, LP	31 Dec, 2025	126,160	126,160	0.00%	$196,810.00
State Street Corp	31 Dec, 2025	121,846	8,100	7.12%	$190,080.00
MARSHALL WACE, LLP	31 Dec, 2025	81,011	81,011	0.00%	$126,377.00
ESSEX INVESTMENT MANAGEMENT CO LLC	31 Dec, 2025	77,250	0	0.00%	$120,510.00
INTEGRITY WEALTH ADVISORS, INC.	31 Dec, 2025	70,000	0	0.00%	$95,200.00
TWO SIGMA ADVISERS, LP	31 Dec, 2025	67,500	67,500	0.00%	$105,300.00
DIMENSIONAL FUND ADVISORS LP	31 Dec, 2025	51,199	-3,202	-5.89%	$79,747.00
GROUP ONE TRADING LLC	31 Dec, 2025	42,509	12,303	40.73%	$66,314.00

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