Institutional HoldersBeta

Who holds a company, from every 13F filed for the quarter, one row per filer exactly as filed, against the latest share count the company reported.

FUELCELL ENERGY INC

CIK 0000886128FCELFCELB· quarter ending 2026-06-30
Shares outstanding
79,954,196
Held by 13F filers
41,293,654
51.6% of shares outstanding
Holders
224
+80 vs 2026-03-31 · 106 new, 26 exited
Value
$1.5B
shares +67.2% vs prior quarter

Share classes (cover page of the 10-Q filed 2026-09-02, as of 2026-08-27)

ClassListedShares outstandingHeld by 13F filers% of classHoldersCUSIP
Common stockFCEL · NASDAQ79,954,19641,293,65451.6%22435952H700

Each class is compared with its own share count; classes are not added together. A class that is not exchange-listed cannot be held by 13F filers.

Securities (CUSIPs held in 13F this quarter)

tick to combine
CountCUSIPClass (as filers write it)HoldersShares heldClass shares% of classValueOptionsMapped via
35952H700COMMON STOCK22441,293,65479,954,19651.6%$1.5B18 call / 11 put13DGholders →

Totals combine the ticked CUSIPs and update as you tick: common-stock classes by default; preferreds, notes, warrants and depositary shares are listed but not counted. "holders →" shows a single CUSIP on its own. Bonds are held as a principal amount, not shares. Options positions are never counted as holdings. 1 further CUSIPs map to this company (mostly bonds) but no 13F filer held them this quarter.

Top holders (224 of 224 · 35952H700)

change vs 2026-03-31
#FilerShares% of classValueChange
1BlackRock, Inc.4,311,5755.39%$155.3M+3,275,840 (+316.3%)
2Legal & General Group Plc2,419,6453.03%$87.1M-446,101 (-15.6%)
3VANGUARD CAPITAL MANAGEMENT LLC2,332,9242.92%$84.0M+151,160 (+6.9%)
4STATE STREET CORP2,143,9082.68%$77.2M+1,910,356 (+818.0%)
5TWO SIGMA INVESTMENTS, LP2,061,3532.58%$74.2M+780,137 (+60.9%)
6GEODE CAPITAL MANAGEMENT, LLC1,408,5801.76%$50.7M+826,884 (+142.2%)
7Encompass Capital Advisors LLC1,365,9001.71%$49.2MNEW
8UBS Group AG1,274,3411.59%$45.9M+673,676 (+112.2%)
9RENAISSANCE TECHNOLOGIES LLC1,272,5001.59%$45.8M+385,900 (+43.5%)
10Anatole Investment Management Ltd1,165,5011.46%$42.0MNEW
11T. Rowe Price Investment Management, Inc.1,121,3751.40%$40.4MNEW
12Driehaus Capital Management LLC1,014,6871.27%$36.5MNEW
13Invesco Ltd.982,0421.23%$35.4M-233,730 (-19.2%)
14Baird Financial Group, Inc.866,2441.08%$31.2MNEW
15JANE STREET GROUP, LLC859,5951.08%$31.0MNEW
16CITADEL ADVISORS LLC852,8811.07%$30.7M+282,592 (+49.6%)
17MILLENNIUM MANAGEMENT LLC746,8790.93%$26.9M-5,608 (-0.7%)
18Trexquant Investment LP739,4000.92%$26.6M+220,069 (+42.4%)
19GROUP ONE TRADING LLC696,3530.87%$25.1M+645,535 (+1270.3%)
20HRT FINANCIAL LP645,5820.81%$23.2M+602,672 (+1404.5%)
21SUSQUEHANNA INTERNATIONAL GROUP, LLP643,8380.81%$23.2M-1,076,330 (-62.6%)
22Point72 Asset Management, L.P.621,0950.78%$22.4M+436,413 (+236.3%)
23ACADIAN ASSET MANAGEMENT LLC594,1810.74%$21.4M-46,120 (-7.2%)
24VANGUARD PORTFOLIO MANAGEMENT LLC505,0820.63%$18.2M+449,040 (+801.3%)
25BANK OF MONTREAL /CAN/460,5380.58%$16.6M+1,239 (+0.3%)
26MORGAN STANLEY450,7500.56%$16.2M+108,170 (+31.6%)
27NORTHERN TRUST CORP430,8260.54%$15.5M+325,662 (+309.7%)
28DIMENSIONAL FUND ADVISORS LP395,8740.50%$14.2M+83,338 (+26.7%)
29TUDOR INVESTMENT CORP ET AL391,8310.49%$14.1MNEW
30MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.377,8360.47%$13.4M-52,965 (-12.3%)
31FMR LLC370,6140.46%$13.3M+363,933 (+5447.3%)
32JPMORGAN CHASE & CO357,1060.45%$10.6M-286,197 (-44.5%)
33VANGUARD FIDUCIARY TRUST CO348,8990.44%$12.6M+64,466 (+22.7%)
34MASSACHUSETTS FINANCIAL SERVICES CO /MA/327,0680.41%$11.8MNEW
35PANAGORA ASSET MANAGEMENT INC319,2320.40%$11.5M+126,812 (+65.9%)
36FEDERATED HERMES, INC.309,3680.39%$11.1M-34,451 (-10.0%)
37RAYMOND JAMES FINANCIAL INC286,2750.36%$10.3MNEW
38Walleye Trading LLC252,6930.32%$9.1MNEW
39Tidal Investments LLC244,0490.31%$8.8M+92,572 (+61.1%)
40Nuveen, LLC220,2510.28%$7.9MNEW
41Defiance ETFs, LLC206,2790.26%$6.6M+54,802 (+36.2%)
42Zurcher Kantonalbank (Zurich Cantonalbank)190,5080.24%$6.9M+43,927 (+30.0%)
43Mitsubishi UFJ Asset Management Co., Ltd.180,0230.23%$6.5MNEW
44Informed Momentum Co LLC178,8580.22%$6.4MNEW
45Bank of New York Mellon Corp169,2330.21%$6.1MNEW
46CHARLES SCHWAB INVESTMENT MANAGEMENT INC160,7760.20%$5.8M+129,803 (+419.1%)
47FIRST TRUST ADVISORS LP142,1350.18%$5.1M+26,029 (+22.4%)
48Lighthouse Investment Partners, LLC141,8000.18%$5.1M+33,000 (+30.3%)
49SIMPLEX TRADING, LLC138,0540.17%$5.0M+137,967 (+158582.8%)
50PRINCIPAL FINANCIAL GROUP INC131,5370.16%$4.7MNEW
51ARDSLEY ADVISORY PARTNERS LP120,0000.15%$4.4M+75,000 (+166.7%)
52ROYAL BANK OF CANADA119,3070.15%$4.3M+98,386 (+470.3%)
53CenterBook Partners LP107,6870.13%$3.9M-878,350 (-89.1%)
54NOMURA ASSET MANAGEMENT INTERNATIONAL INC.105,3770.13%$3.8MNEW
55AMERICAN CENTURY COMPANIES INC98,4800.12%$3.5M+43,377 (+78.7%)
56SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC94,7360.12%$3.4M—
57Virtu Financial LLC90,4180.11%$3.3MNEW
58XTX Topco Ltd88,1870.11%$3.2MNEW
59PRICE T ROWE ASSOCIATES INC /MD/86,8590.11%$3.1M+51,207 (+143.6%)
60BANK OF AMERICA CORP /DE/85,7950.11%$3.1M-104,929 (-55.0%)
61VOLORIDGE INVESTMENT MANAGEMENT, LLC84,9820.11%$3.1MNEW
62RHUMBLINE ADVISERS84,1270.11%$3.0M+70,357 (+510.9%)
63GOLDMAN SACHS GROUP INC81,8290.10%$2.9M-172,998 (-67.9%)
64Qube Research & Technologies Ltd80,7600.10%$2.9M-517,088 (-86.5%)
65REX Advisers, LLC75,9000.09%$2.7MNEW
66LPL Financial LLC75,5730.09%$2.7M+8,725 (+13.1%)
67DEUTSCHE BANK AG\73,8050.09%$2.7M-135,280 (-64.7%)
68Brevan Howard Capital Management LP68,1890.09%$2.5M-22,511 (-24.8%)
69Quinn Opportunity Partners LLC67,0000.08%$2.4MNEW
70Scientech Research LLC59,7560.07%$2.2MNEW
71BRIDGEWAY CAPITAL MANAGEMENT, LLC57,0000.07%$2.1M—
72ALLIANCEBERNSTEIN L.P.56,7000.07%$370KNEW
73Caitong International Asset Management Co., Ltd53,4900.07%$1.9MNEW
74WELLS FARGO & COMPANY/MN51,9710.07%$1.9M+49,831 (+2328.6%)
75Alight Capital Management LP50,0000.06%$1.8MNEW
76CITIGROUP INC46,2960.06%$1.7M-66,330 (-58.9%)
77SEI INVESTMENTS CO45,0590.06%$1.6MNEW
78COMMONWEALTH EQUITY SERVICES, LLC44,4340.06%$1.6MNEW
79SG Americas Securities, LLC43,9480.05%$1.6MNEW
80ALGERT GLOBAL LLC42,8900.05%$1.5M+30,260 (+239.6%)
81Walleye Capital LLC42,4620.05%$1.5MNEW
82Caption Management, LLC42,0000.05%$1.5MNEW
83Amundi39,8100.05%$1.4M-11,137 (-21.9%)
84D. E. Shaw & Co., Inc.38,1270.05%$1.4MNEW
85BARCLAYS PLC34,6290.04%$1.2M-170,214 (-83.1%)
86KINGSWOOD WEALTH ADVISORS, LLC33,9320.04%$1.2MNEW
87Entropy Technologies, LP32,4690.04%$1.2M-5,050 (-13.5%)
88MetLife Investment Management, LLC31,8160.04%$1.1MNEW
89ExodusPoint Capital Management, LP30,7570.04%$1.1M-79,977 (-72.2%)
90Susquehanna Portfolio Strategies, LLC29,8140.04%$1.1M-12,200 (-29.0%)
91CANADA PENSION PLAN INVESTMENT BOARD28,6000.04%$1.0M-25,600 (-47.2%)
92Cinctive Capital Management LP28,2580.04%$1.0MNEW
93Aventail Capital Group, LP25,4920.03%$918KNEW
94Jump Financial, LLC24,3000.03%$875K-215,315 (-89.9%)
95Centiva Capital, LP24,0700.03%$867KNEW
96OSAIC HOLDINGS, INC.23,9710.03%$863K+22,615 (+1667.8%)
97Maven Securities LTD23,2490.03%$837KNEW
98Schonfeld Strategic Advisors LLC22,8280.03%$822K-46,578 (-67.1%)
99Kingsview Wealth Management, LLC21,6810.03%$781KNEW
100Balyasny Asset Management L.P.21,2230.03%$764K-72,750 (-77.4%)
101Headlands Technologies LLC20,3800.03%$734KNEW
102Vanguard Global Advisers, LLC20,2470.03%$729K+775 (+4.0%)
103ProShare Advisors LLC20,1400.03%$725KNEW
104MinichMacGregor Wealth Management, LLC20,0130.03%$721K+10,000 (+99.9%)
105NEW YORK STATE COMMON RETIREMENT FUND19,1000.02%$711KNEW
106Inspire Investing, LLC18,6040.02%$670KNEW
107Marex Group Ltd18,0210.02%$649KNEW
108Sender Co & Partners, Inc.18,0080.02%$648KNEW
109Counterpoint Mutual Funds LLC17,7930.02%$641KNEW
110J. Safra Sarasin Holding AG16,4630.02%$593KNEW
111Sassicaia Capital Advisers LLC16,1660.02%$582KNEW
112Police & Firemen's Retirement System of New Jersey16,0100.02%$577KNEW
113Aigen Investment Management, LP15,3580.02%$553KNEW
114MOZAYYX MANAGEMENT LLC15,2500.02%$549KNEW
115Innovative Asset Advisors Group, LLC15,2500.02%$549KNEW
116TD Asset Management Inc14,4220.02%$519KNEW
117MANUFACTURERS LIFE INSURANCE COMPANY, THE14,1590.02%$510KNEW
118STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM13,6000.02%$490KNEW
119Engineers Gate Manager LP13,5040.02%$486K-103,724 (-88.5%)
120Concentric Capital Strategies, LP13,2570.02%$477KNEW
121PFG Investments, LLC12,2460.02%$441KNEW
122Optiver Holding B.V.12,2340.02%$441K-1,190 (-8.9%)
123FORA Capital, LLC12,2200.02%$440KNEW
124HSBC HOLDINGS PLC11,9540.01%$432KNEW
125Chicago Partners Investment Group LLC10,9630.01%$255KNEW
126TWO SIGMA SECURITIES, LLC10,6220.01%$382KNEW
127VOYA INVESTMENT MANAGEMENT LLC10,4370.01%$376KNEW
128PRUDENTIAL FINANCIAL INC10,2780.01%$370KNEW
129DOLIVER ADVISORS, LP10,0000.01%$360KNEW
130BENJAMIN EDWARDS INC9,9970.01%$360K-362 (-3.5%)
131AQR CAPITAL MANAGEMENT LLC9,9160.01%$357KNEW
132INTECH INVESTMENT MANAGEMENT LLC9,5900.01%$345KNEW
133CARLSON FINANCIAL, INC.9,5430.01%$344KNEW
134KMG FIDUCIARY PARTNERS, LLC9,0000.01%$324KNEW
135Venture Visionary Partners LLC8,4090.01%$303KNEW
136OneDigital Investment Advisors LLC7,7940.01%$281KNEW
137VICTORY CAPITAL MANAGEMENT INC7,7880.01%$280KNEW
138IPG Investment Advisors LLC7,5800.01%$273KNEW
139111 Capital7,4810.01%$269KNEW
140BNP PARIBAS FINANCIAL MARKETS7,4300.01%$268K-103,026 (-93.3%)
141McAdam, LLC7,0990.01%$256KNEW
142Ballentine Partners, LLC6,3360.01%$228KNEW
143JONES FINANCIAL COMPANIES LLLP6,1290.01%$147K+4,812 (+365.4%)
144R Squared Ltd6,1180.01%$220KNEW
145State of Wyoming6,0050.01%$224KNEW
146Ameritas Investment Partners, Inc.4,9260.01%$177KNEW
147MYDA Advisors LLC4,5000.01%$162KNEW
148Russell Investments Group, Ltd.4,3990.01%$158K+4,342 (+7617.5%)
149Banque Cantonale Vaudoise4,0410.01%$146K-1,726 (-29.9%)
150FNY Investment Advisers, LLC3,9040.00%$140KNEW
151STRS OHIO3,9000.00%$140KNEW
152Freestone Grove Partners LP3,2960.00%$119KNEW
153Rockefeller Capital Management L.P.3,0000.00%$108KNEW
154Steward Partners Investment Advisory, LLC2,6850.00%$97KNEW
155Belvedere Trading LLC2,5840.00%$93K+1,996 (+339.5%)
156HOLLENCREST CAPITAL MANAGEMENT2,5000.00%$90KNEW
157SBI Securities Co., Ltd.2,3120.00%$83K+877 (+61.1%)
158Tower Research Capital LLC (TRC)1,9420.00%$70K-613 (-24.0%)
159NewEdge Advisors, LLC1,6050.00%$58K+1,205 (+301.3%)
160Leonteq Securities AG1,4140.00%$51K-1,167 (-45.2%)
161Allworth Financial LP1,3010.00%$47K+1,062 (+444.4%)
162SIGNATUREFD, LLC1,2850.00%$46K+465 (+56.7%)
163Pinnacle Wealth Planning Services, Inc.1,1520.00%$41K-246 (-17.6%)
164Sterling Capital Management LLC1,0940.00%$39KNEW
165Stonehage Fleming Financial Services Holdings Ltd9420.00%$34K—
166PNC Financial Services Group, Inc.8560.00%$31K-77 (-8.3%)
167NISA INVESTMENT ADVISORS, LLC7570.00%$27K+647 (+588.2%)
168CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM7480.00%$27KNEW
169Pacific Center for Financial Services7030.00%$25K—
170TD Waterhouse Canada Inc.6030.00%$19K—
171RAMSEY QUANTITATIVE SYSTEMS6000.00%$22KNEW
172Accent Capital Management, LLC5550.00%$20KNEW
173GAMMA Investing LLC5010.00%$18K+171 (+51.8%)
174VALLEY NATIONAL ADVISERS INC5000.00%$18KNEW
175Burnham & Co LLC3480.00%$13KNEW
176US BANCORP \DE\3460.00%$12K-1,449 (-80.7%)
177MassMutual Private Wealth & Trust, FSB3000.00%$11K—
178FIFTH THIRD BANCORP2830.00%$10K—
179IFP Advisors, Inc2700.00%$10K+33 (+13.9%)
180Fortitude Family Office, LLC2070.00%$7K—
181Cassaday & Co Wealth Management LLC2060.00%$7K-187 (-47.6%)
182Buck Wealth Strategies, LLC2000.00%$7KNEW
183Valued Wealth Advisors LLC1890.00%$7KNEW
184Kilter Group LLC1860.00%$7K-300 (-61.7%)
185Cheviot Value Management, LLC1670.00%$6K—
186UMB Bank, n.a.1660.00%$6K—
187PETERSON WEALTH MANAGEMENT1470.00%$5KNEW
188Tripletail Wealth Management, LLC1210.00%$3KNEW
189Federation des caisses Desjardins du Quebec940.00%$3K-59 (-38.6%)
190Silver Grove Financial Group, Inc.830.00%$3K+50 (+151.5%)
191FIDUCIARY FINANCIAL ADVISORS830.00%$3KNEW
192Quarry LP730.00%$3KNEW
193WELLINGTON-ALTUS USA INC.730.00%$477—
194Winch Advisory Services, LLC620.00%$2K—
195INTERNATIONAL ASSETS INVESTMENT MANAGEMENT, LLC620.00%$2K—
196Parkside Financial Bank & Trust530.00%$2K—
197TRUST CO OF TOLEDO NA /OH/460.00%$2K—
198Farther Finance Advisors, LLC360.00%$1KNEW
199Key Capital Management, INC350.00%$1KNEW
200ROTHSCHILD INVESTMENT LLC350.00%$1KNEW
201Coston, McIsaac & Partners330.00%$1K—
202Roble, Belko & Company, Inc330.00%$1K—
203VSM Wealth Advisory, LLC320.00%$1K—
204WPG Advisers, LLC310.00%$1K—
2051620 INVESTMENT ADVISORS, INC.300.00%$1K—
206CREATIVE FINANCIAL DESIGNS INC /ADV260.00%$936—
207Atlantic Union Bankshares Corp260.00%$937NEW
208NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO230.00%$828—
209IFG Advisory, LLC180.00%$648NEW
210HARBOUR INVESTMENTS, INC.160.00%$576+1 (+6.7%)
211Tradewinds Capital Management, LLC150.00%$541NEW
212ENTRUST FINANCIAL LLC150.00%$541NEW
213NATIONAL BANK OF CANADA /FI/70.00%$252NEW
214Activest Wealth Management60.00%$216+4 (+200.0%)
215CGC Financial Services, LLC60.00%$216—
216Axiom Investment Management LLC60.00%$216NEW
217Larson Financial Group LLC60.00%$216—
218CoreCap Advisors, LLC50.00%$180-8 (-61.5%)
219Planning Strategies Inc.40.00%$144NEW
220Bogart Wealth, LLC30.00%$108—
221Crewe Advisors LLC30.00%$109—
222ELEVATION WEALTH PARTNERS, LLC20.00%$73—
223Vision Retirement, LLC10.00%$36—
224PayPay Securities Corp00.00%$0—
Exited since 2026-03-31 (26 filers; largest 25 shown)
MARSHALL WACE, LLP−387,436
Connor, Clark & Lunn Investment Management Ltd.−211,280
MIRABELLA FINANCIAL SERVICES LLP−200,000
Squarepoint Ops LLC−123,312
GSA CAPITAL PARTNERS LLP−120,189
Hudson Bay Capital Management LP−85,550
683 Capital Management, LLC−85,110
Jain Global LLC−75,300
LANDSCAPE CAPITAL MANAGEMENT, L.L.C.−18,523
OMERS ADMINISTRATION Corp−17,700
PRELUDE CAPITAL MANAGEMENT, LLC−16,404
Quadrature Capital Ltd−13,793
FRANKLIN RESOURCES INC−11,506
PEAK6 LLC−10,899
IQ EQ FUND MANAGEMENT (IRELAND) Ltd−10,781
TORONTO DOMINION BANK−2,704
QUADRANT CAPITAL GROUP LLC−1,144
Trask Adam Roland−1,133
Parallel Advisors, LLC−362
Golden State Wealth Management, LLC−275
MAI Capital Management−66
EverSource Wealth Advisors, LLC−41
Anfield Capital Management, LLC−37
CWM, LLC−18
First Command Advisory Services, Inc.−3

Large holders from 13D/13G (latest per reporting person, last 2 years)

Filed when a holder crosses 5% or changes materially, so often more current than the quarter-end 13F. Percentages are the filer's own, against the share count they used.

Reporting personFormFiledEventShares% of class
Legal & General Group PlcSCHEDULE 13G/A2026-08-142026-06-302,419,6453.6%
LGIM Singapore PTE LtdSCHEDULE 13G/A2026-08-142026-06-3000%
LGIM Managers (Europe) LimitedSCHEDULE 13G/A2026-08-142026-06-301,761,9512.6%
Legal & General UCITS ETF PlcSCHEDULE 13G/A2026-08-142026-06-301,761,9512.6%
Legal & General Investment Management LtdSCHEDULE 13G/A2026-08-142026-06-302,414,3783.6%
Legal & General Investment Management America IncSCHEDULE 13G/A2026-08-142026-06-305,2670%
Citadel Advisors LLCSCHEDULE 13G2026-08-042026-07-2800%
Citadel Securities Group LPSCHEDULE 13G2026-08-042026-07-283,015,3723.8%
Citadel Securities LLCSCHEDULE 13G2026-08-042026-07-282,146,7142.7%
Kenneth GriffinSCHEDULE 13G2026-08-042026-07-283,015,3723.8%
Citadel Securities GP LLCSCHEDULE 13G2026-08-042026-07-283,015,3723.8%
Citadel GP LLCSCHEDULE 13G2026-08-042026-07-2800%
Citadel Advisors Holdings LPSCHEDULE 13G2026-08-042026-07-2800%
BlackRock, Inc.SCHEDULE 13G2026-07-282026-06-304,165,7796.2%
Alex MerueloSCHEDULE 13G2026-07-132026-06-183,710,5004.6%
Alex Meruelo Living TrustSCHEDULE 13G2026-07-132026-06-183,675,0004.6%
The Vanguard GroupSCHEDULE 13G/A2026-03-262026-03-1300%

Source: SEC Form 13F-HR information tables for the quarter ending 2026-06-30 (filed within 45 days of quarter end; amendments applied; values normalised to dollars), the share count from the company's latest 10-K/10-Q XBRL cover page, and Schedule 13D/13G filings. Each row is a legal 13F filer as filed — related entities (e.g. Vanguard's advisers) are not merged. Retail brokerage accounts are not reported on 13F, so the remainder is mostly retail and insiders.