FIRST SOLAR INC FSLR
COM · Common Stock · CUSIP 336433107 · ISIN US3364331070
American company dedicated to the production of photovoltaic modules
- SectorTechnology
- IndustrySemiconductors & Related Devices
- HeadquartersPhoenix, AZ
- Founded1999
- Websitefirstsolar.com
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($114.8m this quarter). Holder counts are more reliable. Shares outstanding: 107.5m as of 2026-04-24, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $195.68. Options: 47 managers hold calls ($5.1bn notional), 40 hold puts ($3.7bn).
Trends to Q1 2026
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 573 |
| Q4 2022 | 675 |
| Q1 2023 | 730 |
| Q2 2023 | 749 |
| Q3 2023 | 740 |
| Q4 2023 | 781 |
| Q1 2024 | 791 |
| Q2 2024 | 907 |
| Q3 2024 | 923 |
| Q4 2024 | 891 |
| Q1 2025 | 825 |
| Q2 2025 | 874 |
| Q3 2025 | 934 |
| Q4 2025 | 1,059 |
| Q1 2026 | 970 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q2 2024 | 459 | 394 |
| Q3 2024 | 477 | 380 |
| Q4 2024 | 401 | 453 |
| Q1 2025 | 398 | 452 |
| Q2 2025 | 481 | 354 |
| Q3 2025 | 461 | 406 |
| Q4 2025 | 508 | 422 |
| Q1 2026 | 450 | 552 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q2 2025 | $7.0bn | $4.2bn | 0.60 |
| Q3 2025 | $8.0bn | $6.8bn | 0.86 |
| Q4 2025 | $8.1bn | $6.7bn | 0.83 |
| Q1 2026 | $5.1bn | $3.7bn | 0.73 |
Biggest buyers
| BlackRock, Inc. | Added | +1.2m |
| JPMORGAN CHASE & CO | Added | +1.0m |
| MILLENNIUM MANAGEMENT LLC | Added | +770.3k |
| Invesco Ltd. | Added | +712.3k |
| Man Group plc | Added | +426.4k |
| AQR CAPITAL MANAGEMENT LLC | Added | +398.8k |
| Pacer Advisors, Inc. | Added | +396.6k |
| LOS ANGELES CAPITAL MANAGEMENT LLC | Added | +355.1k |
| Clean Energy Transition LLP | Added | +277.6k |
| Pictet Asset Management Holding SA | Added | +258.2k |
Biggest sellers
| FMR LLC | Reduced | -4.7m |
| MORGAN STANLEY | Reduced | -838.9k |
| WELLINGTON MANAGEMENT GROUP LLP | Reduced | -754.0k |
| Polar Capital Holdings Plc | Reduced | -651.6k |
| PRICE T ROWE ASSOCIATES INC /MD/ | Reduced | -647.5k |
| HSBC HOLDINGS PLC | Reduced | -466.9k |
| Castle Hook Partners LP | Sold out | -443.7k |
| SCHRODER INVESTMENT MANAGEMENT GROUP | Reduced | -408.3k |
| BNP PARIBAS FINANCIAL MARKETS | Reduced | -337.5k |
| Merewether Investment Management, LP | Sold out | -325.1k |
Biggest calls
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $1.1bn5.7m shares |
| JANE STREET GROUP, LLC | Reduced | $946.3m4.8m shares |
| CITADEL ADVISORS LLC | Reduced | $772.2m3.9m shares |
| JPMORGAN CHASE & CO | Added | $557.1m3.0m shares |
| IMC-Chicago, LLC | Reduced | $368.8m1.9m shares |
| Walleye Trading LLC | Reduced | $255.8m1.3m shares |
| GROUP ONE TRADING LLC | Reduced | $237.2m1.2m shares |
| CITIGROUP INC | Added | $154.2m781.7k shares |
| D. E. Shaw & Co., Inc. | Reduced | $124.0m628.4k shares |
| Two Seas Capital LP | New | $90.5m458.7k shares |
Biggest puts
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $1.1bn5.7m shares |
| JANE STREET GROUP, LLC | Reduced | $975.3m4.9m shares |
| CITADEL ADVISORS LLC | Reduced | $406.5m2.1m shares |
| IMC-Chicago, LLC | Reduced | $325.5m1.7m shares |
| GROUP ONE TRADING LLC | Reduced | $189.7m961.5k shares |
| Walleye Trading LLC | Reduced | $149.7m759.0k shares |
| D. E. Shaw & Co., Inc. | Reduced | $103.6m525.0k shares |
| JPMORGAN CHASE & CO | Added | $86.6m469.0k shares |
| BARCLAYS PLC | Added | $45.4m230.3k shares |
| UBS Group AG | Reduced | $40.7m206.1k shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| BlackRock, Inc. 13G · institution filed 2026-07-28 | 11.8% |
| VANGUARD CAPITAL MANAGEMENT LLC 13G · institution new · filed 2026-04-29 | 7.3% |
| SUSQUEHANNA SECURITIES, LLC 13G · institution +1.7 pts · filed 2026-08-14 | 7.0% |
| Citadel Securities GP LLC 13G · passive investor +1.0 pts · filed 2026-10-15 | 6.0% |
| VANGUARD PORTFOLIO MANAGEMENT LLC 13G · institution new · filed 2026-04-29 | 5.3% |
| STATE STREET CORP 13G · institution new · filed 2026-08-07 | 5.2% |
| JANE STREET GROUP, LLC 13G · institution new · filed 2026-08-13 | 5.1% |
Fell to 5% or below in the last year: FMR LLC (1.7%, 2026-05-06), VANGUARD GROUP INC (0.0%, 2026-03-26; now reported by VANGUARD CAPITAL MANAGEMENT LLC)
Insider purchases and sales in Q1 2026
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q2 2024 | 0 | — | 12 | $26.1m | $20.5m |
| Q3 2024 | 0 | — | 2 | $2.4m | $2.4m |
| Q4 2024 | 0 | — | 1 | $714.9k | $714.9k |
| Q1 2025 | 0 | — | 10 | $5.2m | $4.1m |
| Q2 2025 | 0 | — | 4 | $3.5m | $3.5m |
| Q3 2025 | 0 | — | 5 | $6.4m | $6.4m |
| Q4 2025 | 0 | — | 3 | $13.0m | $9.9m |
| Q1 2026 | 0 | — | 11 | $14.9m | $6.0m |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2026-03-17 | Bradley Alexander R. Chief Financial Officer | Sold plan | $2.8m14.1k shares |
| 2026-03-17 | Dymbort Jason E. General Counsel and Secretary | Sold plan | $1.8m9.0k shares |
| 2026-03-17 | Verma Kuntal Kumar Chief Manufacturing Officer | Sold plan | $35.9k180 shares |
| 2026-03-17 | Theurer Nathan B. VP - Global Controller and CAO | Sold plan | $19.2k96 shares |
| 2026-03-16 | Widmar Mark R Chief Executive Officer, director | Sold | $388.9k1.9k shares |
| 2026-03-16 | Bradley Alexander R. Chief Financial Officer | Sold plan | $118.5k590 shares |
| 2026-03-16 | Verma Kuntal Kumar Chief Manufacturing Officer | Sold plan | $78.7k392 shares |
| 2026-03-16 | Gloeckler Markus Chief Technology Officer | Sold | $73.9k368 shares |
| 2026-03-16 | Dymbort Jason E. General Counsel and Secretary | Sold plan | $71.9k358 shares |
| 2026-03-16 | Stockdale Caroline Chief People and Comm. Officer | Sold | $67.3k335 shares |
| 2026-03-16 | Koralewski Michael Chief Supply Chain Officer | Sold | $53.0k264 shares |
| 2026-03-16 | ANTOUN GEORGES Chief Commercial Officer | Sold | $49.2k245 shares |
| 2026-03-16 | Buehler Patrick James Chief Product Officer | Sold | $36.1k180 shares |
| 2026-03-16 | Sloan Samantha L. EVP, Corporate Affairs | Sold | $24.1k120 shares |
| 2026-03-16 | Theurer Nathan B. VP - Global Controller and CAO | Sold plan | $7.0k35 shares |
| 2026-03-10 | Verma Kuntal Kumar Chief Manufacturing Officer | Sold plan | $79.8k408 shares |
| 2026-03-10 | Theurer Nathan B. VP - Global Controller and CAO | Sold plan | $63.4k324 shares |
| 2026-03-09 | Widmar Mark R Chief Executive Officer, director | Sold | $1.1m5.5k shares |
| 2026-03-09 | Bradley Alexander R. Chief Financial Officer | Sold | $334.3k1.8k shares |
| 2026-03-09 | Verma Kuntal Kumar Chief Manufacturing Officer | Sold | $263.8k1.4k shares |
| 2026-03-09 | Gloeckler Markus Chief Technology Officer | Sold | $252.2k1.3k shares |
| 2026-03-09 | Dymbort Jason E. General Counsel and Secretary | Sold | $248.4k1.3k shares |
| 2026-03-09 | Stockdale Caroline Chief People and Comm. Officer | Sold | $198.2k1.0k shares |
| 2026-03-09 | ANTOUN GEORGES Chief Commercial Officer | Sold | $150.6k791 shares |
| 2026-03-09 | Koralewski Michael Chief Supply Chain Officer | Sold | $143.9k756 shares |
| 2026-03-09 | Buehler Patrick James Chief Product Officer | Sold | $132.7k697 shares |
| 2026-03-09 | Sloan Samantha L. EVP, Corporate Affairs | Sold | $57.7k303 shares |
| 2026-03-09 | Theurer Nathan B. VP - Global Controller and CAO | Sold | $29.9k157 shares |
| 2026-03-04 | Gloeckler Markus Chief Technology Officer | Sold plan | $716.9k3.6k shares |
| 2026-03-04 | Verma Kuntal Kumar Chief Manufacturing Officer | Sold plan | $143.4k728 shares |
The latest 30 of 42 trades.
Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).
Holders, Q1 2026
| Manager | Shares | Change |
|---|---|---|
| BlackRock, Inc. 0.05% of their portfolio | 13.8m $2.7bn | Added +1.2m |
| VANGUARD CAPITAL MANAGEMENT LLC 0.03% of their portfolio | 6.8m $1.3bn | First filing |
| VANGUARD PORTFOLIO MANAGEMENT LLC 0.06% of their portfolio | 5.7m $1.1bn | First filing |
| STATE STREET CORP 0.04% of their portfolio | 5.3m $1.0bn | Added +22.7k |
| GEODE CAPITAL MANAGEMENT, LLC 0.04% of their portfolio | 3.1m $612.0m | Added +186.8k |
| Invesco Ltd. 0.05% of their portfolio | 2.7m $524.1m | Added +712.3k |
| JPMORGAN CHASE & CO 0.03% of their portfolio | 2.3m $425.6m | Added +1.0m |
| Hill City Capital, LP 15.35% of their portfolio | 2.2m $429.5m | Added +87.2k |
| Amundi 0.11% of their portfolio | 2.0m $404.3m | Reduced -166.0k |
| FMR LLC 0.02% of their portfolio | 1.8m $356.7m | Reduced -4.7m |
| MORGAN STANLEY 0.02% of their portfolio | 1.7m $331.9m | Reduced -838.9k |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. 0.39% of their portfolio | 1.7m $331.7m | Reduced -171.8k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.06% of their portfolio | 1.4m $283.1m | Added +15.4k |
| Clean Energy Transition LLP 23.08% of their portfolio | 1.4m $281.4m | Added +277.6k |
| NORTHERN TRUST CORP 0.04% of their portfolio | 1.4m $274.3m | Added +3.7k |
| DIMENSIONAL FUND ADVISORS LP 0.05% of their portfolio | 1.3m $257.4m | Added +56.3k |
| UBS Group AG 0.04% of their portfolio | 1.2m $237.9m | Added +18.0k |
| Pictet Asset Management Holding SA 0.24% of their portfolio | 1.1m $224.5m | Added +258.2k |
| DEUTSCHE BANK AG\ 0.07% of their portfolio | 1.1m $217.0m | Reduced -161.5k |
| SCHRODER INVESTMENT MANAGEMENT GROUP 0.15% of their portfolio | 1.0m $188.2m | Reduced -408.3k |
| MILLENNIUM MANAGEMENT LLC 0.14% of their portfolio | 951.8k $187.8m | Added +770.3k |
| BANK OF AMERICA CORP /DE/ 0.01% of their portfolio | 880.8k $173.7m | Reduced -19.1k |
| AQR CAPITAL MANAGEMENT LLC 0.07% of their portfolio | 801.7k $152.8m | Added +398.8k |
| Bank of New York Mellon Corp 0.03% of their portfolio | 708.2k $139.7m | Added +3.0k |
| Mirova US LLC 1.56% of their portfolio | 698.6k $137.8m | Reduced -190.5k |
| HSBC HOLDINGS PLC 0.08% of their portfolio | 667.0k $131.5m | Reduced -466.9k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.02% of their portfolio | 659.7k $130.1m | Added +18.2k |
| Robeco Schweiz AG 2.69% of their portfolio | 645.7k $127.4m | Added +106.6k |
| Lightrock Netherlands B.V. 4.03% of their portfolio | 607.5k $18.9m | Reduced -58.8k |
| Legal & General Group Plc 0.03% of their portfolio | 601.3k $118.6m | Reduced -14.7k |
| VANGUARD FIDUCIARY TRUST CO 0.03% of their portfolio | 599.2k $118.2m | First filing |
| Handelsbanken Fonder AB 0.39% of their portfolio | 593.9k $117.2m | Reduced -4.1k |
| GOLDMAN SACHS GROUP INC 0.01% of their portfolio | 530.8k $104.7m | Added +69.3k |
| DekaBank Deutsche Girozentrale 0.17% of their portfolio | 524.2k $103.0m | Unchanged |
| SAMLYN CAPITAL, LLC 1.73% of their portfolio | 510.9k $100.8m | Reduced -281.1k |
| Man Group plc 0.20% of their portfolio | 483.1k $95.3m | Added +426.4k |
| Nuveen, LLC 0.02% of their portfolio | 459.8k $90.7m | Added +105.1k |
| BARCLAYS PLC 0.03% of their portfolio | 420.9k $83.0m | Reduced -60.5k |
| Capital Research Global Investors 0.01% of their portfolio | 406.9k $80.3m | Reduced -292.6k |
| Pacer Advisors, Inc. 0.23% of their portfolio | 405.2k $79.9m | Added +396.6k |
| PECONIC PARTNERS LLC 1.35% of their portfolio | 395.0k $77.9m | Added +100.0k |
| LOS ANGELES CAPITAL MANAGEMENT LLC 0.29% of their portfolio | 376.5k $74.3m | Added +355.1k |
| BNP PARIBAS FINANCIAL MARKETS 0.05% of their portfolio | 372.4k $73.5m | Reduced -337.5k |
| WELLINGTON MANAGEMENT GROUP LLP 0.01% of their portfolio | 371.3k $73.2m | Reduced -754.0k |
| STOREBRAND ASSET MANAGEMENT AS 0.20% of their portfolio | 345.0k $68.1m | Added +77.5k |
| CITADEL ADVISORS LLC 0.05% of their portfolio | 338.2k $66.7m | Added +73.9k |
| FIRST TRUST ADVISORS LP 0.05% of their portfolio | 337.0k $66.5m | Added +69.5k |
| CITIGROUP INC 0.04% of their portfolio | 333.2k $65.7m | Added +104.0k |
| Russell Investments Group, Ltd. 0.07% of their portfolio | 318.2k $61.0m | Added +63.9k |
| Two Seas Capital LP 2.76% of their portfolio | 303.0k $59.8m | Added +18.7k |
| Swiss National Bank 0.03% of their portfolio | 299.2k $59.0m | Added +20.0k |
| CANADA PENSION PLAN INVESTMENT BOARD 0.04% of their portfolio | 286.6k $56.5m | Added +22.0k |
| Triodos Investment Management BV 4.14% of their portfolio | 277.6k $54.7m | Added +28.2k |
| ARIEL INVESTMENTS, LLC 0.60% of their portfolio | 271.5k $53.6m | Added +19.9k |
| JUPITER ASSET MANAGEMENT LTD 0.27% of their portfolio | 260.0k $51.3m | Added +176.6k |
| TODD ASSET MANAGEMENT LLC 0.99% of their portfolio | 256.3k $50.6m | Added +69.3k |
| Mitsubishi UFJ Asset Management Co., Ltd. 0.03% of their portfolio | 244.4k $48.2m | Added +20.4k |
| Assenagon Asset Management S.A. 0.07% of their portfolio | 235.7k $46.5m | Reduced -8.7k |
| National Pension Service 0.04% of their portfolio | 235.4k $46.4m | Added +24.7k |
| Vanguard Global Advisers, LLC 0.02% of their portfolio | 235.1k $46.4m | First filing |
| Zurcher Kantonalbank (Zurich Cantonalbank) 0.10% of their portfolio | 233.2k $46.0m | Reduced -111.4k |
| Sumitomo Mitsui Trust Group, Inc. 0.03% of their portfolio | 228.5k $45.1m | Reduced -14.0k |
| ROYAL BANK OF CANADA 0.01% of their portfolio | 212.6k $41.9m | Reduced -237.8k |
| Universal- Beteiligungs- und Servicegesellschaft mbH 0.07% of their portfolio | 212.3k $41.9m | Reduced -32.1k |
| Erste Asset Management GmbH 0.36% of their portfolio | 211.2k $39.2m | Reduced -44.6k |
| Hudson Bay Capital Management LP 0.24% of their portfolio | 200.0k $39.5m | New |
| ABN AMRO Bank N.V. 0.43% of their portfolio | 198.9k $39.7m | Added +16.3k |
| RHUMBLINE ADVISERS 0.03% of their portfolio | 198.2k $39.1m | Reduced -338 |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main 0.04% of their portfolio | 198.1k $39.1m | Reduced -13.6k |
| SG Americas Securities, LLC 0.04% of their portfolio | 197.3k $38.9m | Added +98.9k |
| Swedbank AB 0.04% of their portfolio | 195.4k $38.5m | Added +25.6k |
| Allianz Asset Management GmbH 0.04% of their portfolio | 194.3k $38.3m | Added +42.3k |
| ALLIANCEBERNSTEIN L.P. 0.02% of their portfolio | 182.9k $47.8m | Added +3.7k |
| TEACHERS RETIREMENT SYSTEM OF THE STATE OF KENTUCKY 0.28% of their portfolio | 182.4k $36.0m | Added +48.0k |
| SEB Asset Management AB 0.15% of their portfolio | 177.3k $35.0m | First filing |
| VANGUARD ASSET MANAGEMENT, Ltd 0.03% of their portfolio | 175.2k $34.6m | First filing |
| Eurizon Capital SGR S.p.A. 0.10% of their portfolio | 169.3k $33.4m | Added +113.7k |
| Qube Research & Technologies Ltd 0.05% of their portfolio | 168.0k $33.1m | New |
| FRANKLIN RESOURCES INC 0.01% of their portfolio | 163.6k $32.3m | Added +20.6k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 161.8k $31.9m | Reduced -647.5k |
| MIROVA 1.29% of their portfolio | 161.4k $31.8m | Added +55.7k |
| Korea Investment CORP 0.07% of their portfolio | 160.6k $31.7m | Added +61.6k |
| NATIONAL BANK OF CANADA /FI/ 0.03% of their portfolio | 160.1k $31.6m | Reduced -8.1k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.03% of their portfolio | 155.6k $30.7m | Reduced -2.7k |
| TWO SIGMA INVESTMENTS, LP 0.03% of their portfolio | 155.5k $30.7m | Added +84.3k |
| JACOBS LEVY EQUITY MANAGEMENT, INC 0.13% of their portfolio | 150.9k $29.8m | New |
| Steward Partners Investment Advisory, LLC 0.15% of their portfolio | 148.4k $29.3m | Added +106 |
| Employees Provident Fund Board 0.22% of their portfolio | 146.5k $28.9m | Added +48.8k |
| Raiffeisen Bank International AG 0.39% of their portfolio | 145.8k $26.9m | Added +28.4k |
| TRILLIUM ASSET MANAGEMENT, LLC 0.92% of their portfolio | 142.4k $27.7m | Reduced -146 |
| Caisse de depot et placement du Quebec 0.04% of their portfolio | 138.7k $27.4m | Added +120.2k |
| E. Ohman J:or Asset Management AB 0.72% of their portfolio | 137.2k $27.1m | Added +2.2k |
| Aberdeen Group plc 0.04% of their portfolio | 133.1k $26.3m | Added +1.6k |
| Grantham, Mayo, Van Otterloo & Co. LLC 0.07% of their portfolio | 132.6k $26.2m | Reduced -2.4k |
| SUMITOMO MITSUI FINANCIAL GROUP, INC. 0.52% of their portfolio | 130.5k $25.7m | Added +18.4k |
| PRINCIPAL FINANCIAL GROUP INC 0.01% of their portfolio | 130.3k $25.7m | Reduced -33.0k |
| California Public Employees Retirement System 0.02% of their portfolio | 128.9k $25.4m | Reduced -46.1k |
| BANK OF MONTREAL /CAN/ 0.01% of their portfolio | 123.4k $24.3m | Reduced -23.7k |
| Polar Capital Holdings Plc 0.10% of their portfolio | 114.4k $22.6m | Reduced -651.6k |
| CIBC Bancorp USA Inc. 0.03% of their portfolio | 111.7k $22.0m | First filing |