Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
136 institutional managers reported holding FCEL for the quarter ended Mar 31, 2026. Together they hold about 50% of shares outstanding; the top 10 hold 29%. 26 opened new positions; 25 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| Legal & General Group PLC | 2.87M | 5.95% | $18.7M | trimmed -0.9% | 2025 Q4 |
| Vanguard Group | 2.54M | 5.27% | $16.6M | added +1.8% | ≤2013 |
| Susquehanna International Group | 1.81M | 3.77% | $11.8M | added +41.9% | 2019 Q3 |
| Two Sigma | 1.28M | 2.66% | $8.3M | added +27.5% | 2025 Q3 |
| Invesco | 1.22M | 2.52% | $7.9M | trimmed -19.2% | ≤2013 |
| BlackRock | 1.04M | 2.15% | $6.7M | added +8.7% | ≤2013 |
| CenterBook Partners LP | 986.0k | 2.04% | $6.4M | trimmed -22.9% | 2025 Q4 |
| Renaissance Technologies | 886.6k | 1.84% | $5.8M | trimmed -27.3% | 2025 Q3 |
| Millennium Management | 752.5k | 1.56% | $4.9M | added +135.3% | 2024 Q1 |
| Acadian Asset Management | 640.3k | 1.33% | $4.2M | added +750.4% | 2025 Q3 |
| UBS | 600.7k | 1.25% | $3.9M | added +309% | ≤2013 |
| Qube Research & Technologies LTD | 597.8k | 1.24% | $3.9M | added +5341.4% | 2025 Q3 |
| Geode Capital | 581.7k | 1.21% | $3.8M | trimmed -1.8% | ≤2013 |
| Citadel Advisors | 570.3k | 1.18% | $3.7M | added +179.6% | 2025 Q3 |
| Trexquant Investment LP | 519.3k | 1.08% | $3.4M | trimmed -42% | 2025 Q3 |
| Bank OF Montreal /CAN/ | 459.3k | 0.95% | $3.0M | opened | 2026 Q1 |
| Mirae Asset Global Etfs Holdings LTD. | 430.8k | 0.89% | $2.8M | added +6% | 2020 Q4 |
| Marshall Wace | 387.4k | 0.80% | $2.5M | added +478.9% | 2024 Q4 |
| Federated Hermes, INC. | 343.8k | 0.71% | $2.2M | trimmed -21.1% | 2024 Q4 |
| Morgan Stanley | 342.6k | 0.71% | $2.2M | added +8.7% | ≤2013 |
| Dimensional Fund Advisors | 312.5k | 0.65% | $2.0M | added +459.1% | 2021 Q1 |
| Goldman Sachs | 254.8k | 0.53% | $1.7M | added +50.6% | 2020 Q2 |
| Jump Financial | 239.6k | 0.50% | $1.6M | added +163.9% | 2025 Q4 |
| State Street | 233.6k | 0.48% | $1.5M | trimmed -5.6% | 2019 Q4 |
| Connor, Clark & Lunn Investment Management LTD. | 211.3k | 0.44% | $1.4M | trimmed -50% | 2025 Q3 |
| Deutsche Bank AG\ | 209.1k | 0.43% | $1.4M | trimmed -50.6% | 2020 Q2 |
| Barclays PLC | 204.8k | 0.42% | $1.3M | added +452.2% | ≤2013 |
| Mirabella Financial Services LLP | 200.0k | 0.41% | $1.3M | trimmed -14.5% | 2025 Q4 |
| Panagora Asset Management INC | 192.4k | 0.40% | $1.3M | added +747.9% | 2025 Q4 |
| Bank OF America CORP /DE/ | 190.7k | 0.40% | $1.2M | added +1298.3% | ≤2013 |
| Point72 | 184.7k | 0.38% | $1.2M | added +31.8% | 2025 Q4 |
| Defiance ETFs, LLC | 151.5k | 0.31% | $987k | opened | 2026 Q1 |
| Tidal Investments LLC | 151.5k | 0.31% | $987k | opened | 2026 Q1 |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 146.6k | 0.30% | $955k | trimmed -0.6% | 2020 Q4 |
| Squarepoint Ops LLC | 123.3k | 0.26% | $803k | added +145.2% | 2024 Q4 |
| GSA Capital Partners LLP | 120.2k | 0.25% | $783k | opened | 2025 Q3 |
| Engineers Gate Manager LP | 117.2k | 0.24% | $764k | added +31.9% | 2024 Q1 |
| First Trust Advisors LP | 116.1k | 0.24% | $756k | opened | 2026 Q1 |
| Citigroup INC | 112.6k | 0.23% | $734k | added +932.1% | ≤2013 |
| ExodusPoint | 110.7k | 0.23% | $721k | opened | 2026 Q1 |
| BNP Paribas Financial Markets | 110.5k | 0.23% | $720k | trimmed -45% | ≤2013 |
| Lighthouse Investment Partners, LLC | 108.8k | 0.23% | $709k | trimmed -15.5% | 2025 Q3 |
| Northern Trust | 105.2k | 0.22% | $685k | trimmed -5.5% | ≤2013 |
| Balyasny Asset Management | 94.0k | 0.20% | $612k | trimmed -57.8% | 2025 Q4 |
| Brevan Howard Capital Management LP | 90.7k | 0.19% | $591k | opened | 2025 Q2 |
| Hudson Bay Capital | 85.5k | 0.18% | $557k | added +65.1% | 2025 Q4 |
| 683 Capital Management, LLC | 85.1k | 0.18% | $554k | trimmed -29.1% | 2025 Q4 |
| Jain Global LLC | 75.3k | 0.16% | $491k | added +470.5% | 2025 Q2 |
| Schonfeld Strategic Advisors | 69.4k | 0.14% | $452k | added +457.3% | 2025 Q2 |
| LPL Financial LLC | 66.8k | 0.14% | $436k | added +14% | 2025 Q3 |
Largest 50 of 136 shown; the full ranked, searchable register is at boothcheck.com/holders/FCEL. Related filers are grouped using the filings' own included-manager declarations. Historically, several managers opening new positions in the same quarter said almost nothing about the quarter that followed (59,118 cases since 2013). A filed record, not a forecast. Nothing here is investment advice.