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 ($94.0m this quarter). Holder counts are more reliable. Shares outstanding: 107.3m as of 2025-10-24, 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 ≈ $220.64. Options: 62 managers hold calls ($8.0bn notional), 47 hold puts ($6.8bn).
Trends to Q3 2025
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 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q4 2023 | 355 | 363 |
| Q1 2024 | 389 | 347 |
| Q2 2024 | 459 | 394 |
| Q3 2024 | 477 | 380 |
| Q4 2024 | 401 | 453 |
| Q1 2025 | 398 | 452 |
| Q2 2025 | 481 | 354 |
| Q3 2025 | 461 | 406 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q4 2024 | $3.2bn | $3.3bn | 1.04 |
| Q1 2025 | $2.8bn | $2.2bn | 0.80 |
| Q2 2025 | $7.0bn | $4.2bn | 0.60 |
| Q3 2025 | $8.0bn | $6.8bn | 0.86 |
Biggest buyers
| FMR LLC | Added | +1.7m |
| Castle Hook Partners LP | New | +678.8k |
| JPMORGAN CHASE & CO | Added | +623.9k |
| Amundi | Added | +564.0k |
| AMF Tjanstepension AB | Added | +497.8k |
| VANGUARD GROUP INC | Added | +464.1k |
| MORGAN STANLEY | Added | +404.0k |
| Clean Energy Transition LLP | Added | +363.3k |
| Tidal Investments LLC | Added | +339.1k |
| Tredje AP-fonden | Added | +335.7k |
Biggest sellers
| PRICE T ROWE ASSOCIATES INC /MD/ | Reduced | -3.8m |
| VIKING GLOBAL INVESTORS LP | Reduced | -1.5m |
| CITADEL ADVISORS LLC | Reduced | -835.6k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | -808.7k |
| JANE STREET GROUP, LLC | Reduced | -784.7k |
| SUSQUEHANNA ADVISORS GROUP, INC. | Sold out | -600.0k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | Reduced | -506.1k |
| WELLINGTON MANAGEMENT GROUP LLP | Reduced | -465.6k |
| UBS Group AG | Reduced | -395.9k |
| Atreides Management, LP | Sold out | -393.5k |
Biggest calls
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $1.8bn7.9m shares |
| PEAK6 LLC | Added | $1.3bn5.7m shares |
| JANE STREET GROUP, LLC | Added | $1.2bn5.2m shares |
| CITADEL ADVISORS LLC | Reduced | $958.4m4.3m shares |
| IMC-Chicago, LLC | Added | $491.4m2.2m shares |
| GROUP ONE TRADING LLC | Added | $331.6m1.5m shares |
| WOLVERINE TRADING, LLC | Added | $323.0m1.4m shares |
| Walleye Trading LLC | Added | $304.7m1.4m shares |
| CITIGROUP INC | Reduced | $159.7m724.1k shares |
| D. E. Shaw & Co., Inc. | Added | $158.6m719.2k shares |
Biggest puts
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $1.8bn8.3m shares |
| JANE STREET GROUP, LLC | Added | $1.6bn7.3m shares |
| CITADEL ADVISORS LLC | Added | $863.7m3.9m shares |
| IMC-Chicago, LLC | Added | $437.5m2.0m shares |
| Walleye Trading LLC | Reduced | $289.6m1.3m shares |
| WOLVERINE TRADING, LLC | Added | $269.3m1.2m shares |
| GROUP ONE TRADING LLC | Added | $266.3m1.2m shares |
| D. E. Shaw & Co., Inc. | Added | $222.4m1.0m shares |
| Tidal Investments LLC | Added | $110.3m500.0k shares |
| SIMPLEX TRADING, LLC | Reduced | $85.1m385.9k 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 Q3 2025
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 |
|---|---|---|---|---|---|
| Q4 2023 | 0 | — | 3 | $1.8m | $1.8m |
| Q1 2024 | 0 | — | 6 | $8.2m | $7.1m |
| 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 |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2025-09-02 | Sloan Samantha L. EVP, Corporate Affairs | Sold | $26.4k140 shares |
| 2025-08-19 | Dymbort Jason E. General Counsel and Secretary | Sold plan | $392.8k1.8k shares |
| 2025-08-15 | Widmar Mark R Chief Executive Officer, director | Sold plan | $462.9k2.3k shares |
| 2025-08-14 | Theurer Nathan B. VP - Global Controller and CAO | Sold plan | $124.9k686 shares |
| 2025-08-13 | Widmar Mark R Chief Executive Officer, director | Sold plan | $710.6k3.8k shares |
| 2025-08-12 | Widmar Mark R Chief Executive Officer, director | Sold plan | $4.4m23.9k shares |
| 2025-07-03 | Buehler Patrick James Chief Product Officer | Sold plan | $288.0k1.6k shares |
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, Q3 2025
| Manager | Shares | Change |
|---|---|---|
| VANGUARD GROUP INC 0.05% of their portfolio | 13.7m $3.0bn | Added +464.1k |
| BlackRock, Inc. 0.05% of their portfolio | 12.8m $2.8bn | Reduced -179.5k |
| STATE STREET CORP 0.04% of their portfolio | 5.3m $1.2bn | Reduced -60.8k |
| FMR LLC 0.05% of their portfolio | 4.4m $978.2m | Added +1.7m |
| GEODE CAPITAL MANAGEMENT, LLC 0.04% of their portfolio | 2.9m $637.2m | Added +37.9k |
| MORGAN STANLEY 0.03% of their portfolio | 2.6m $567.8m | Added +404.0k |
| WELLINGTON MANAGEMENT GROUP LLP 0.10% of their portfolio | 2.5m $552.0m | Reduced -465.6k |
| SAMLYN CAPITAL, LLC 6.70% of their portfolio | 2.1m $472.0m | Reduced -46.9k |
| Hill City Capital, LP 19.49% of their portfolio | 2.1m $460.9m | Reduced -60.0k |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. 1.17% of their portfolio | 2.0m $450.3m | Reduced -196.7k |
| Amundi 0.15% of their portfolio | 2.0m $459.9m | Added +564.0k |
| Invesco Ltd. 0.07% of their portfolio | 2.0m $431.5m | Reduced -165.1k |
| UBS Group AG 0.08% of their portfolio | 1.9m $429.0m | Reduced -395.9k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.07% of their portfolio | 1.5m $327.5m | Reduced -506.1k |
| NORTHERN TRUST CORP 0.04% of their portfolio | 1.3m $297.6m | Added +34.3k |
| SCHRODER INVESTMENT MANAGEMENT GROUP 0.23% of their portfolio | 1.3m $292.5m | Reduced -23.9k |
| JPMORGAN CHASE & CO 0.01% of their portfolio | 1.3m $291.8m | Added +623.9k |
| DIMENSIONAL FUND ADVISORS LP 0.06% of their portfolio | 1.2m $274.9m | Reduced -91.3k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.03% of their portfolio | 1.2m $272.6m | Reduced -3.8m |
| DEUTSCHE BANK AG\ 0.09% of their portfolio | 1.2m $263.8m | Reduced -74.2k |
| Clean Energy Transition LLP 21.69% of their portfolio | 1.1m $246.4m | Added +363.3k |
| BANK OF AMERICA CORP /DE/ 0.02% of their portfolio | 1.1m $244.8m | Reduced -38.4k |
| MILLENNIUM MANAGEMENT LLC 0.19% of their portfolio | 1.1m $237.5m | Added +61.7k |
| Mirova US LLC 2.03% of their portfolio | 911.9k $201.1m | Reduced -33.0k |
| Pictet Asset Management Holding SA 0.18% of their portfolio | 835.8k $184.3m | Added +150.8k |
| VIKING GLOBAL INVESTORS LP 0.44% of their portfolio | 768.0k $169.4m | Reduced -1.5m |
| Capital Research Global Investors 0.03% of their portfolio | 755.5k $166.6m | Reduced -270.8k |
| Nuveen, LLC 0.04% of their portfolio | 707.5k $156.0m | Reduced -218.9k |
| Castle Hook Partners LP 2.27% of their portfolio | 678.8k $149.7m | New |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.02% of their portfolio | 665.1k $146.7m | Reduced -128.9k |
| Legal & General Group Plc 0.03% of their portfolio | 658.9k $145.3m | Reduced -65.8k |
| Bank of New York Mellon Corp 0.03% of their portfolio | 656.8k $144.8m | Reduced -10.1k |
| HSBC HOLDINGS PLC 0.08% of their portfolio | 638.5k $140.7m | Added +93.4k |
| CANADA PENSION PLAN INVESTMENT BOARD 0.10% of their portfolio | 633.6k $139.7m | Added +63.5k |
| Handelsbanken Fonder AB 0.44% of their portfolio | 622.8k $137.3m | Reduced -83.8k |
| Robeco Schweiz AG 3.04% of their portfolio | 612.3k $135.0m | Reduced -19.4k |
| ROYAL BANK OF CANADA 0.02% of their portfolio | 607.7k $134.0m | Reduced -46.9k |
| BARCLAYS PLC 0.05% of their portfolio | 574.8k $126.8m | Added +167.9k |
| DekaBank Deutsche Girozentrale 0.20% of their portfolio | 524.2k $116.4m | Unchanged |
| AMF Tjanstepension AB 0.46% of their portfolio | 519.1k $114.5m | Added +497.8k |
| Tidal Investments LLC 0.49% of their portfolio | 518.8k $114.4m | Added +339.1k |
| Tredje AP-fonden 0.82% of their portfolio | 464.8k $102.5m | Added +335.7k |
| CITIGROUP INC 0.07% of their portfolio | 451.1k $99.5m | Added +235.4k |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main 0.09% of their portfolio | 429.1k $94.6m | Added +304.0k |
| Encompass Capital Advisors LLC 4.18% of their portfolio | 421.0k $92.8m | Added +74.1k |
| Merewether Investment Management, LP 2.22% of their portfolio | 420.7k $92.8m | Added +222.1k |
| Zurcher Kantonalbank (Zurich Cantonalbank) 0.19% of their portfolio | 373.3k $82.3m | Added +37.7k |
| Erste Asset Management GmbH 0.74% of their portfolio | 341.2k $76.1m | Reduced -46.9k |
| Two Seas Capital LP 4.52% of their portfolio | 340.7k $75.1m | Added +330.7k |
| ARIEL INVESTMENTS, LLC 0.77% of their portfolio | 325.5k $71.8m | Added +18.2k |
| Vontobel Holding Ltd. 0.22% of their portfolio | 323.8k $71.4m | Added +90.1k |
| STOREBRAND ASSET MANAGEMENT AS 0.19% of their portfolio | 318.7k $70.3m | Reduced -48.2k |
| GOLDMAN SACHS GROUP INC 0.01% of their portfolio | 309.3k $68.2m | Added +35.5k |
| Balyasny Asset Management L.P. 0.13% of their portfolio | 302.5k $66.7m | Added +205.1k |
| Swiss National Bank 0.04% of their portfolio | 293.6k $64.7m | Reduced -14.8k |
| BNP PARIBAS FINANCIAL MARKETS 0.05% of their portfolio | 291.0k $64.2m | Added +37.0k |
| FIRST TRUST ADVISORS LP 0.05% of their portfolio | 290.1k $64.0m | Reduced -3.5k |
| Grantham, Mayo, Van Otterloo & Co. LLC 0.17% of their portfolio | 274.9k $60.6m | Reduced -119.6k |
| CITADEL ADVISORS LLC 0.05% of their portfolio | 262.6k $57.9m | Reduced -835.6k |
| Walleye Trading LLC 0.91% of their portfolio | 259.3k $57.2m | Added +141.5k |
| Triodos Investment Management BV 4.13% of their portfolio | 259.2k $57.1m | Reduced -14.9k |
| Sumitomo Mitsui Trust Group, Inc. 0.03% of their portfolio | 250.5k $55.2m | Added +1.7k |
| Universal- Beteiligungs- und Servicegesellschaft mbH 0.09% of their portfolio | 246.2k $54.3m | Added +9.9k |
| Point72 Asset Management, L.P. 0.11% of their portfolio | 221.8k $48.9m | Reduced -112.8k |
| VOYA INVESTMENT MANAGEMENT LLC 0.05% of their portfolio | 217.6k $48.0m | Added +46.6k |
| Robeco Institutional Asset Management B.V. 0.07% of their portfolio | 217.6k $48.0m | Added +76.1k |
| Mitsubishi UFJ Asset Management Co., Ltd. 0.03% of their portfolio | 213.3k $47.0m | Added +12.2k |
| RHUMBLINE ADVISERS 0.04% of their portfolio | 208.2k $45.9m | Added +1.3k |
| CIBC Private Wealth Group LLC 0.08% of their portfolio | 207.5k $45.8m | Reduced -9.5k |
| STRS OHIO 0.16% of their portfolio | 202.9k $44.8m | Reduced -115.0k |
| Covalis Capital LLP 5.07% of their portfolio | 197.2k $43.5m | New |
| AQR CAPITAL MANAGEMENT LLC 0.03% of their portfolio | 194.7k $42.9m | Added +8.4k |
| PRINCIPAL FINANCIAL GROUP INC 0.02% of their portfolio | 187.8k $41.4m | Added +29.7k |
| TODD ASSET MANAGEMENT LLC 0.84% of their portfolio | 187.4k $41.3m | Added +28.8k |
| ABN AMRO Bank N.V. 0.40% of their portfolio | 185.3k $40.7m | Added +1.1k |
| Russell Investments Group, Ltd. 0.05% of their portfolio | 179.7k $39.8m | Added +10.9k |
| VAN LANSCHOT KEMPEN INVESTMENT MANAGEMENT N.V. 0.35% of their portfolio | 177.1k $39.1m | Reduced -26.0k |
| Allianz Asset Management GmbH 0.05% of their portfolio | 175.8k $38.8m | Added +76.7k |
| California Public Employees Retirement System 0.02% of their portfolio | 175.2k $38.6m | Added +37.1k |
| Yaupon Capital Management LP 1.97% of their portfolio | 173.6k $38.3m | Added +89.2k |
| TRILLIUM ASSET MANAGEMENT, LLC 1.00% of their portfolio | 172.3k $38.0m | Reduced -11.9k |
| DANSKE BANK A/S 0.09% of their portfolio | 171.6k $37.8m | Added +93.0k |
| ALLIANCEBERNSTEIN L.P. 0.01% of their portfolio | 167.7k $37.0m | Added +54.2k |
| FRANKLIN RESOURCES INC 0.01% of their portfolio | 163.6k $36.1m | Added +1.3k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.04% of their portfolio | 161.7k $35.7m | Reduced -6.6k |
| NATIONAL BANK OF CANADA /FI/ 0.04% of their portfolio | 161.4k $35.6m | Reduced -96.4k |
| SORA INVESTORS LLC 3.25% of their portfolio | 159.5k $35.2m | Reduced -13.4k |
| Ruffer LLP 1.93% of their portfolio | 157.1k $34.6m | New |
| MACQUARIE GROUP LTD 0.04% of their portfolio | 156.1k $34.4m | Added +76.4k |
| Candriam S.C.A. 0.17% of their portfolio | 150.4k $33.2m | Added +62.0k |
| Swedbank AB 0.03% of their portfolio | 148.7k $32.8m | Reduced -7.8k |
| Raiffeisen Bank International AG 0.43% of their portfolio | 144.9k $32.4m | Reduced -32.7k |
| Steward Partners Investment Advisory, LLC 0.18% of their portfolio | 143.8k $31.7m | Added +136.9k |
| E. Ohman J:or Asset Management AB 0.74% of their portfolio | 141.9k $31.3m | Added +1.4k |
| TEACHERS RETIREMENT SYSTEM OF THE STATE OF KENTUCKY 0.23% of their portfolio | 134.4k $29.6m | Added +20.0k |
| Aberdeen Group plc 0.05% of their portfolio | 133.4k $29.2m | Reduced -8.8k |
| MIROVA 4.13% of their portfolio | 132.5k $29.2m | Added +84.0k |
| Avalon Trust Co 1.89% of their portfolio | 132.2k $29.1m | Reduced -1.2k |
| BANK OF MONTREAL /CAN/ 0.01% of their portfolio | 130.5k $28.8m | Reduced -23.1k |
| ARDSLEY ADVISORY PARTNERS LP 4.36% of their portfolio | 129.0k $28.4m | Added +114.0k |