Fuel Tech, Inc.: which funds bought and sold

Institutions that bought and sold Fuel Tech shares in Q2 2026, from the holdings they reported to the SEC on Form 13F for March 31, 2026 and June 30, 2026.

Between March 31, 2026 and June 30, 2026, 16 institutions that filed 13F reports for both quarters added to or opened positions in Fuel Tech, and 17 cut or closed them. Together they sold a net 87K shares, −1.2% on what they held at the start of the quarter. Active managers and hedge funds on our list were net sellers of 599K shares (−31.7%); index fund managers were net buyers of 124K shares (+5.6%). 6 opened a new position and 8 sold out entirely.

Bought, Q2 2026 16 institutions, 6 of them new holders Sold, Q2 2026 17 institutions, 8 of them sold out

Net change, all compared −87K shares (−1.2%)

Net change, active managers −599K shares (−31.7%), 0 bought, 4 sold

Buyers versus sellers

institutions compared, 50

16 bought 17 17 sold

Active managers and hedge funds 0 bought · 4 sold · −599K

Index fund managers 4 bought · 1 sold · +124K

Other institutions 12 bought · 12 sold · +388K

Biggest buyers

by change in shares held

Biggest buyers
Institution	Change in shares	Shares June 30, 2026	Value
Peapod Lane Capital LLC	+342K +71.4%	821K	$1.8M
Marquette Asset Management, LLC	+111K New position	111K	$244,225
Blackrock, Inc. Index funds	+86K +21.0%	496K	$1.1M
Thompson Davis & Co., Inc.	+86K New position	86K	$189,618
Gsa Capital Partners LLP	+49K +19.9%	295K	$652,000
Rothschild Wealth LLC	+40K New position	40K	$88,400
Jane Street Group, LLC	+39K +54.6%	109K	$241,957
Northern Trust Corp Index funds	+29K +91.9%	60K	$133,336
UBS Group AG	+18K +1801400.0%	18K	$39,813
Vanguard Capital Management LLC Index funds	+18K +1.8%	1.0M	$2.2M
HRT Financial LP	+12K New position	12K	$26,000
Scientech Research LLC	+11K New position	11K	$25,285
Simplex Trading, LLC	+9,487 +944.9%	10K	$23,185
Lexaurum Advisors, LLC	+6,000 +42.4%	20K	$44,554
Wells Fargo & Company	+2,019 New position	2,019	$4,462
Vanguard Fiduciary Trust Co Index funds	+954 +0.7%	133K	$294,944

Biggest buyers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
None of the active managers on our list.

Biggest sellers

by change in shares held

Biggest sellers
Institution	Change in shares	Shares June 30, 2026	Value
Renaissance Technologies LLC Hedge fund	−305K −21.7%	1.1M	$2.4M
Citadel Advisors LLC Hedge fund	−202K −91.4%	19K	$42,145
Xtx Topco Ltd	−118K Sold out	0	—
Susquehanna International Group, LLP	−104K −74.4%	36K	$79,330
Two Sigma Investments, LP Hedge fund	−70K −29.2%	168K	$372,290
Integrated Wealth Concepts LLC	−35K Sold out	0	—
Group One Trading LLC	−26K −65.4%	14K	$30,726
Cresset Asset Management, LLC	−26K Sold out	0	—
Marshall Wace, LLP Hedge fund	−22K Sold out	0	—
Chicago Partners Investment Group LLC	−17K Sold out	0	—
Geode Capital Management, LLC Index funds	−9,825 −1.8%	523K	$1.2M
Dimensional Fund Advisors LP	−6,000 −30.9%	13K	$29,061
Tower Research Capital LLC (TRC)	−3,211 Sold out	0	—
Advisory Services Network, LLC	−900 Sold out	0	—
Orion Capital Management LLC	−100 Sold out	0	—
Essex Investment Management Co LLC	−91 −0.1%	77K	$170,521
Caitong International Asset Management Co., Ltd	−2 −66.7%	1	$2

Biggest sellers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
Renaissance Technologies LLC Hedge fund	−305K −21.7%	1.1M	$2.4M
Citadel Advisors LLC Hedge fund	−202K −91.4%	19K	$42,145
Two Sigma Investments, LP Hedge fund	−70K −29.2%	168K	$372,290
Marshall Wace, LLP Hedge fund	−22K Sold out	0	—

New positions

largest by value

Institution	Shares	Value June 30, 2026
Marquette Asset Management, LLC	111K	$244,225
Thompson Davis & Co., Inc.	86K	$189,618
Rothschild Wealth LLC	40K	$88,400
HRT Financial LP	12K	$26,000
Scientech Research LLC	11K	$25,285
Wells Fargo & Company	2,019	$4,462

Sold out

largest by value

Institution	Shares	Value March 31, 2026
Xtx Topco Ltd	118K	$144,261
Integrated Wealth Concepts LLC	35K	$42,700
Cresset Asset Management, LLC	26K	$31,110
Marshall Wace, LLPHedge fund	22K	$26,559
Chicago Partners Investment Group LLC	17K	$23,069
Tower Research Capital LLC (TRC)	3,211	$3,917
Advisory Services Network, LLC	900	$1,098
Orion Capital Management LLC	100	$122

Who holds the shares

13F holdings at June 30, 2026

Institutions reporting: 42
Ten largest holders: 87.1%
Index fund managers: 31.8%
Active managers and hedge funds: 17.5%

Buying and selling by type of institution, March 31, 2026 to June 30, 2026
Type	Bought	Sold	New	Sold out	Net change in shares	Net %
Active managers and hedge funds	0	4	0	1	−599K	−31.7%
Index fund managers	4	1	0	0	+124K	+5.6%
Other institutions	12	12	6	7	+388K	+11.6%

Active managers and hedge funds: a list we maintain of about 400 well-known stock-picking firms and hedge funds, matched by SEC registration number (CIK) and checked against the filer names each quarter. Index fund managers: the large index houses, such as BlackRock, Vanguard, State Street, Geode and Northern Trust. Every other filer (banks, brokers, wealth managers, pension funds, insurers and firms not on the list) counts as another institution. A firm that files under several SEC registrations appears once for each.

What these filings can and cannot tell you

Form 13F lists the long positions in US-listed shares held by investment managers with more than $100 million in such holdings. Managers file it up to 45 days after each quarter ends, so this page shows what funds held at the end of each quarter, not what they are doing now: a position may have changed since. Short positions, most derivatives and smaller managers are not included, and a cut can mean a fund lost clients or rebalanced rather than a view on Fuel Tech.

Only managers that filed a holdings report for both quarters are compared (50 here). 1 other holder is left out: first-time or late filers, firms that changed their SEC registration, and filings that withheld positions under confidential treatment, any of which would otherwise look like a new position or a sale. Figures are as reported by each manager in the SEC's quarterly 13F data sets; option positions are excluded.

← Back to Fuel Tech, Inc. · Insiders · Politicians