As of November 6, 2026, 3 holders' latest Schedule 13D or 13G filings report owning 5% or more of FuelCell Energy Inc. The largest reported stake is Alex Meruelo's, at 7.5%. 12 filings are on record since July 17, 2025 (Schedule 13G, October 15, 2026).
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Key facts
- · Reporting person: Vanguard Capital Management · Sole voting: 600,649 · Shared voting: 0 · Sole dispositive: 4,071,593 · Shared dispositive: 0 · SCHEDULE 13G, 2026-10-30
- · Reporting person: Alex Meruelo · Sole voting: 0 · Shared voting: 6,001,029 · Sole dispositive: 0 · Shared dispositive: 6,001,029 · SCHEDULE 13G, 2026-10-15
- · Reporting person: Legal & General Group Plc · Sole voting: 0 · Shared voting: 2,419,645 · Sole dispositive: 0 · Shared dispositive: 2,419,645 · SCHEDULE 13G/A, 2026-08-14
- · Reporting person: Citadel Securities GP LLC · Sole voting: 0 · Shared voting: 3,015,372 · Sole dispositive: 0 · Shared dispositive: 3,015,372 · SCHEDULE 13G, 2026-08-04
- · Reporting person: BlackRock, Inc. · Sole voting: 4,106,535 · Shared voting: 0 · Sole dispositive: 4,165,779 · Shared dispositive: 0 · SCHEDULE 13G, 2026-07-28
FuelCell Energy Inc has 12 Schedule 13D or 13G filings on record since 2025-07-17. 3 holders' latest filing reports 5% or more of common stock. Each figure below is the holder's own, as filed, with the filing linked.
Holders
| Holder | Percent | Shares | Latest | Event date |
|---|---|---|---|---|
| 7.5% | 6,001,029 | SCHEDULE 13G, 2026-10-15 | 2026-10-07 | |
| BlackRock, Inc. | 6.2% | 4,165,779 | SCHEDULE 13G, 2026-07-28 | 2026-06-30 |
| Vanguard Capital Management | 5.09% | 4,071,593 | SCHEDULE 13G, 2026-10-30 | 2026-09-30 |
| Citadel Securities GP LLC | 3.8% | 3,015,372 | SCHEDULE 13G, 2026-08-04 | 2026-07-28 |
| Legal & General Group Plc | 3.6% | 2,419,645 | SCHEDULE 13G/A, 2026-08-14 | 2026-06-30 |
| The Vanguard Group | 0% | 0 | SCHEDULE 13G/A, 2026-03-26 | 2026-03-13 |
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Keep reading
More on FuelCell Energy Inc and the records around it.
FuelCell Energy Inc elsewhere on the record
- Leadership changes Oct 2026
- Who owns it
Companies that share a holder
- Legal & General Group Plc also filed stake reports on 4 other companies: Fastly, Inc. (Aug 2026), ZIFF DAVIS, INC. (Aug 2026), NETSCOUT SYSTEMS, INC. (May 2026)
- Citadel Securities GP LLC also filed stake reports on 24 other companies: CIPHER DIGITAL INC. (Oct 2026), First Solar, Inc. (Oct 2026), AmpliTech Group, Inc. (Oct 2026)
- Vanguard Capital Management also filed stake reports on 1495 other companies: A10 Networks Inc (Oct 2026), Altisource Portfolio Solutions SA (Oct 2026), Alto Neuroscience Inc (Oct 2026)
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Voting and dispositive power, as filed
| Reporting person | Sole voting | Shared voting | Sole dispositive | Shared dispositive | Filing |
|---|---|---|---|---|---|
| Alex Meruelo | 0 | 6,001,029 | 0 | 6,001,029 | SCHEDULE 13G, 2026-10-15 |
| Alex Meruelo Living Trust | 0 | 5,960,529 | 0 | 5,960,529 | SCHEDULE 13G, 2026-10-15 |
| BlackRock, Inc. | 4,106,535 | 0 | 4,165,779 | 0 | SCHEDULE 13G, 2026-07-28 |
| Vanguard Capital Management | 600,649 | 0 | 4,071,593 | 0 | SCHEDULE 13G, 2026-10-30 |
| Citadel Securities GP LLC | 0 | 3,015,372 | 0 | 3,015,372 | SCHEDULE 13G, 2026-08-04 |
| Citadel Securities LLC | 0 | 2,146,714 | 0 | 2,146,714 | SCHEDULE 13G, 2026-08-04 |
| Citadel Securities Group LP | 0 | 3,015,372 | 0 | 3,015,372 | SCHEDULE 13G, 2026-08-04 |
| Citadel Advisors LLC | 0 | 0 | 0 | 0 | SCHEDULE 13G, 2026-08-04 |
| Citadel Advisors Holdings LP | 0 | 0 | 0 | 0 | SCHEDULE 13G, 2026-08-04 |
| Citadel GP LLC | 0 | 0 | 0 | 0 | SCHEDULE 13G, 2026-08-04 |
| Kenneth Griffin | 0 | 3,015,372 | 0 | 3,015,372 | SCHEDULE 13G, 2026-08-04 |
| Legal & General Group Plc | 0 | 2,419,645 | 0 | 2,419,645 | SCHEDULE 13G/A, 2026-08-14 |
| Legal & General Investment Management Ltd | 0 | 2,414,378 | 0 | 2,414,378 | SCHEDULE 13G/A, 2026-08-14 |
| LGIM Managers (Europe) Limited | 0 | 1,761,951 | 0 | 1,761,951 | SCHEDULE 13G/A, 2026-08-14 |
| Legal & General UCITS ETF Plc | 0 | 1,761,951 | 0 | 1,761,951 | SCHEDULE 13G/A, 2026-08-14 |
| Legal & General Investment Management America Inc | 0 | 5,267 | 0 | 5,267 | SCHEDULE 13G/A, 2026-08-14 |
| LGIM Singapore PTE Ltd | 0 | 0 | 0 | 0 | SCHEDULE 13G/A, 2026-08-14 |
The latest filing identifies FuelCell Energy Inc by CUSIP 35952H700 and gives its principal executive office as 3 Great Pasture Road, Danbury, CT 06810 (SCHEDULE 13G, 2026-10-30).
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2025-07-17 | BlackRock, Inc. | 2.1% | SCHEDULE 13G |
| 2025-07-29 | The Vanguard Group | 4.6% | SCHEDULE 13G/A |
| 2025-08-11 | Legal & General Group Plc | 0% | SCHEDULE 13G |
| 2026-01-30 | The Vanguard Group | 5.22% | SCHEDULE 13G |
| 2026-02-11 | Legal & General Group Plc | 6.1% | SCHEDULE 13G |
| 2026-03-26 | The Vanguard Group | 0% | SCHEDULE 13G/A |
| 2026-07-13 | Alex Meruelo | 4.6% | SCHEDULE 13G |
| 2026-07-28 | BlackRock, Inc. | 6.2% | SCHEDULE 13G |
| 2026-08-04 | Citadel Securities GP LLC | 3.8% | SCHEDULE 13G |
| 2026-08-14 | Legal & General Group Plc | 3.6% | SCHEDULE 13G/A |
| 2026-10-15 | Alex Meruelo | 7.5% | SCHEDULE 13G |
| 2026-10-30 | Vanguard Capital Management | 5.09% | SCHEDULE 13G |
Questions about who owns FuelCell Energy Inc
Who owns FuelCell Energy Inc?
On this page, 3 holders' latest ownership filings report 5% or more of FuelCell Energy Inc: Alex Meruelo (7.5%, Schedule 13G, filed 2026-10-15), BlackRock, Inc. (6.2%, Schedule 13G, filed 2026-07-28) and Vanguard Capital Management (5.09%, Schedule 13G, filed 2026-10-30).
Who are the largest shareholders of FuelCell Energy Inc?
By the share each holder's latest filing reports, the largest holders of FuelCell Energy Inc on this page are Alex Meruelo (7.5%), BlackRock, Inc. (6.2%) and Vanguard Capital Management (5.09%).
When did Alex Meruelo buy into FuelCell Energy Inc?
The filings give report dates, not purchase dates. The earliest filing from Alex Meruelo on this page is the Schedule 13G, filed 2026-07-13, reporting 4.6%; its latest, Schedule 13G filed 2026-10-15, reports 7.5%.
Is this an audit or a full list?
Neither. The ownership list on this page covers only Schedule 13D and 13G filings, which holders make once they own 5% or more of a class of shares (an amendment can report a stake that has since fallen below 5%); 12 such filings are shown here. It is not an audit and not a full cap table: holders who never reached 5% are not listed, and a stake can change after its latest filing.
Also on the record for FuelCell Energy Inc
| Date | Record | Figure | Our page | Source |
|---|---|---|---|---|
| October 7, 2026 | Leadership change: Matthew Latino appointed, Chief Financial Officer | — | Leadership changes | Source |
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Where this comes from
Anyone who comes to own more than 5% of a class of a listed company's voting shares has to tell the SEC. A holder who may seek to change or influence the company files Schedule 13D, and has to say in Item 4, "Purpose of Transaction", what it intends to do. A holder with no such intent, such as many index and passive funds, may file the shorter Schedule 13G. Both are amended when the stake changes, including when it falls below 5%.
Every row here is one of those filings, linked to the filing itself. Percentages and share counts are exactly as the holder filed them, for the holder the filing names; an amendment showing a lower figure is shown as filed. Item 4 text is quoted word for word. Where a 13D's Item 4 contains a sentence stating a definite intent to influence the company, that sentence is marked and quoted; the page does not describe the holder or its motives beyond the words it filed. Nothing here is investment advice.