First Solar, Inc.
MX ˙ BMV ˙ US3364331070
SecurityMX:FSLR / First Solar, Inc.
InstitutionMillennium Management Llc
ManagerIsrael Englander
Latest Disclosed Ownership951,813 shares
Latest Disclosed Value $ 187,754,632
Millennium Management Llc ownership in FSLR / First Solar, Inc.

On May 15, 2026 - Millennium Management Llc filed a 13F-HR form disclosing ownership of 951,813 shares of First Solar, Inc. (MX:FSLR) valued at $187,754,632 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 181,560 shares of First Solar, Inc.. This represents a change in shares of 424.24% during the quarter.

Millennium Management Llc has a history of taking positions in derivatives of the underlying security (FSLR) in the form of stock options. The firm currently holds call options representing 135,200 of underlying shares valued at $26,669,552 USD and put options representing 78,100 of underlying shares valued at $15,406,006 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

Upgrade to unlock premium data and export to Excel .

Institutional Put/Call Ratios
(Premium Subscription Required)

In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

MX:FSLR / First Solar, Inc. Historical Put/Call Ratio
Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F FIRST SOLAR COM 336433107 951,813 770,253 424.24 187,755 295.87 0.0781
2026-02-17 2025-12-31 13F FIRST SOLAR COM 336433107 181,560 -895,422 -83.14 47,429 -80.03 0.0199
2025-11-14 2025-09-30 13F FIRST SOLAR COM 336433107 1,076,982 61,681 6.08 237,507 41.31 0.1014
2025-08-14 2025-06-30 13F FIRST SOLAR COM 336433107 1,015,301 186,370 22.48 168,073 60.37 0.0812
2025-05-15 2025-03-31 13F FIRST SOLAR COM 336433107 828,931 652,308 369.32 104,802 236.68 0.0558
2025-02-14 2024-12-31 13F FIRST SOLAR COM 336433107 176,623 82,332 87.32 31,128 32.35 0.0152
2024-11-14 2024-09-30 13F FIRST SOLAR COM 336433107 94,291 -116,854 -55.34 23,520 -50.59 0.0112
2024-08-14 2024-06-30 13F FIRST SOLAR COM 336433107 211,145 93,297 79.17 47,605 139.31 0.0220
2024-05-15 2024-03-31 13F FIRST SOLAR COM 336433107 117,848 -86,779 -42.41 19,893 -43.57 0.0085
2024-02-14 2023-12-31 13F FIRST SOLAR COM 336433107 204,627 -413,824 -66.91 35,253 -64.72 0.0153
2023-11-14 2023-09-30 13F FIRST SOLAR COM 336433107 618,451 121,423 24.43 99,935 5.77 0.0504
2023-08-14 2023-06-30 13F FIRST SOLAR COM 336433107 497,028 297,970 149.69 94,480 118.22 0.0466
2023-05-15 2023-03-31 13F FIRST SOLAR COM 336433107 199,058 -190,128 -48.85 43,295 -25.73 0.0248
2023-02-14 2022-12-31 13F FIRST SOLAR COM 336433107 389,186 -31,596 -7.51 58,296 4.74 0.0323
2022-11-14 2022-09-30 13F FIRST SOLAR COM 336433107 420,782 190,750 82.92 55,657 255.14 0.0329
2022-08-15 2022-06-30 13F FIRST SOLAR COM 336433107 230,032 -112,137 -32.77 15,672 -45.30 0.0097
2022-05-16 2022-03-31 13F FIRST SOLAR COM 336433107 342,169 42,625 14.23 28,653 9.75 0.0152
2022-02-14 2021-12-31 13F FIRST SOLAR COM 336433107 299,544 -58,566 -16.35 26,108 -23.63 0.0133
2021-11-15 2021-09-30 13F FIRST SOLAR COM 336433107 358,110 75,373 26.66 34,185 33.58 0.0205
2021-08-16 2021-06-30 13F FIRST SOLAR COM 336433107 282,737 79,316 38.99 25,591 44.10 0.0157
2021-05-17 2021-03-31 13F FIRST SOLAR COM 336433107 203,421 150,702 285.86 17,759 240.54 0.0127
2021-02-16 2020-12-31 13F FIRST SOLAR COM 336433107 52,719 -522,512 -90.84 5,215 -86.31 0.0038
2020-11-16 2020-09-30 13F FIRST SOLAR COM 336433107 575,231 575,231 38,080 0.0469
2020-08-14 2020-06-30 13F FIRST SOLAR COM 336433107 0 -96,981 -100.00 0 -100.00
2020-05-14 2020-03-31 13F FIRST SOLAR COM 336433107 96,981 96,981 3,497 0.0079
2020-02-14 2019-12-31 13F FIRST SOLAR COM 336433107 0 -451,001 -100.00 0 -100.00
2019-11-14 2019-09-30 13F FIRST SOLAR COM 336433107 451,001 -477,925 -51.45 26,162 -57.12 0.0414
2019-08-15 2019-06-30 13F/A-1 FIRST SOLAR COM 336433107 928,926 338,436 57.31 61,012 95.55 0.0917
2019-05-14 2019-03-31 13F FIRST SOLAR COM 336433107 590,490 -1,475,270 -71.42 31,201 -64.42 0.0467
2019-02-15 2018-12-31 13F/A-1 FIRST SOLAR COM 336433107 2,065,760 1,734,171 522.99 87,702 446.23 0.1367
2019-02-14 2018-12-31 13F FIRST SOLAR COM 336433107 2,065,760 87,702
2018-11-14 2018-09-30 13F FIRST SOLAR COM 336433107 331,589 166,669 101.06 16,056 84.87 0.0197
2018-08-14 2018-06-30 13F FIRST SOLAR COM 336433107 164,920 122,340 287.32 8,685 187.39 0.0113
2018-05-15 2018-03-31 13F FIRST SOLAR COM 336433107 42,580 -478,104 -91.82 3,022 -91.40 0.0040
2018-02-14 2017-12-31 13F FIRST SOLAR COM 336433107 520,684 56,716 12.22 35,157 65.16 0.0485
2017-11-14 2017-09-30 13F FIRST SOLAR COM 336433107 463,968 381,893 465.30 21,287 550.38 0.0324
2017-08-14 2017-06-30 13F FIRST SOLAR COM 336433107 82,075 -397,635 -82.89 3,273 -74.82 0.0058
2017-05-15 2017-03-31 13F FIRST SOLAR COM 336433107 479,710 299,921 166.82 13,000 125.34 0.0238
2017-02-14 2016-12-31 13F FIRST SOLAR COM 336433107 179,789 -277,096 -60.65 5,769 -68.02 0.0121
2016-11-14 2016-09-30 13F FIRST SOLAR COM 336433107 456,885 57,755 14.47 18,042 -6.76 0.0303
2016-08-15 2016-06-30 13F FIRST SOLAR COM 336433107 399,130 -184,533 -31.62 19,350 -51.58 0.0443
2016-05-16 2016-03-31 13F FIRST SOLAR COM 336433107 583,663 513,993 737.75 39,963 769.14 0.0999
2016-02-16 2015-12-31 13F FIRST SOLAR COM 336433107 69,670 -987,078 -93.41 4,598 -89.82 0.0097
2015-11-16 2015-09-30 13F FIRST SOLAR COM 336433107 1,056,748 858,188 432.21 45,176 384.31 0.0875
2015-08-14 2015-06-30 13F FIRST SOLAR COM 336433107 198,560 -589,443 -74.80 9,328 -80.20 0.0176
2015-05-15 2015-03-31 13F FIRST SOLAR COM 336433107 788,003 788,003 0.00 47,115 0.0877
2015-02-17 2014-12-31 13F FIRST SOLAR COM 336433107 0 -4,050 -100.00 0 -100.00
2014-11-14 2014-09-30 13F FIRST SOLAR COM 336433107 4,050 4,050 0.00 267 0.0007
2014-08-14 2014-06-30 13F FIRST SOLAR COM 336433107 0 -298,350 -100.00 0 -100.00
2014-05-15 2014-03-31 13F FIRST SOLAR COM 336433107 298,350 -47,325 -13.69 20,822 10.24 0.0603
2014-02-14 2013-12-31 13F FIRST SOLAR COM 336433107 345,675 300,961 673.08 18,888 950.50 0.0596
2013-11-14 2013-09-30 13F FIRST SOLAR COM 336433107 44,714 -425,577 -90.49 1,798 -91.47 0.0058
2013-08-14 2013-06-30 13F FIRST SOLAR COM 336433107 470,291 470,291 21,074 0.0646
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-05-15 2026-03-31 13F FIRST SOLAR COM Call 135,200 14.38 26,670 -13.63 n/a n/a n/a
2026-02-17 2025-12-31 13F FIRST SOLAR COM Call 118,200 -70.28 30,877 -64.79 n/a n/a n/a
2025-11-14 2025-09-30 13F FIRST SOLAR COM Call 397,700 -55.54 87,705 -40.78 n/a n/a n/a
2025-08-14 2025-06-30 13F FIRST SOLAR COM Call 894,600 398.38 148,092 552.56 n/a n/a n/a
2025-05-15 2025-03-31 13F FIRST SOLAR COM Call 179,500 106.08 22,694 47.84 n/a n/a n/a
2025-02-14 2024-12-31 13F FIRST SOLAR COM Call 87,100 -11.84 15,351 -37.71 n/a n/a n/a
2024-11-14 2024-09-30 13F FIRST SOLAR COM Call 98,800 -28.30 24,645 -20.68 n/a n/a n/a
2024-08-14 2024-06-30 13F FIRST SOLAR COM Call 137,800 -8.50 31,068 22.21 n/a n/a n/a
2024-05-15 2024-03-31 13F FIRST SOLAR COM Call 150,600 -11.20 25,421 -13.00 n/a n/a n/a
2024-02-14 2023-12-31 13F FIRST SOLAR COM Call 169,600 95.39 29,219 108.31 n/a n/a n/a
2023-11-14 2023-09-30 13F FIRST SOLAR COM Call 86,800 -23.19 14,026 -34.70 n/a n/a n/a
2023-08-14 2023-06-30 13F FIRST SOLAR COM Call 113,000 191.24 21,480 154.53 n/a n/a n/a
2023-05-15 2023-03-31 13F FIRST SOLAR COM Call 38,800 -58.01 8,439 -39.03 n/a n/a n/a
2023-02-14 2022-12-31 13F FIRST SOLAR COM Call 92,400 0.22 13,841 13.50 n/a n/a n/a
2022-11-14 2022-09-30 13F FIRST SOLAR COM Call 92,200 -21.26 12,195 52.86 n/a n/a n/a
2022-08-15 2022-06-30 13F FIRST SOLAR COM Call 117,100 0.00 7,978 -18.64 n/a n/a n/a
2022-05-16 2022-03-31 13F FIRST SOLAR COM Call 117,100 24.18 9,806 19.31 n/a n/a n/a
2022-02-14 2021-12-31 13F FIRST SOLAR COM Call 94,300 0.00 8,219 -8.70 n/a n/a n/a
2021-11-15 2021-09-30 13F FIRST SOLAR COM Call 94,300 0.00 9,002 5.47 n/a n/a n/a
2021-08-16 2021-06-30 13F FIRST SOLAR COM Call 94,300 257.20 8,535 270.28 n/a n/a n/a
2021-05-17 2021-03-31 13F FIRST SOLAR COM Call 26,400 -73.60 2,305 -76.70 n/a n/a n/a
2021-02-16 2020-12-31 13F FIRST SOLAR COM Call 100,000 -5.30 9,892 29.49 n/a n/a n/a
2019-08-14 2019-06-30 13F T MOBILE US COM Call 105,600 7,639 n/a n/a n/a
2017-02-14 2016-12-31 13F FIRST SOLAR COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2016-11-14 2016-09-30 13F FIRST SOLAR COM Call 180,000 7,108 n/a n/a n/a
2016-08-15 2016-06-30 13F FIRST SOLAR COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2016-05-16 2016-03-31 13F FIRST SOLAR COM Call 60,000 4,108 n/a n/a n/a
2014-08-14 2014-06-30 13F FIRST SOLAR COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2014-05-15 2014-03-31 13F FIRST SOLAR COM Call 6,000 -20.00 419 2.20 n/a n/a n/a
2014-02-14 2013-12-31 13F FIRST SOLAR COM Call 7,500 410 n/a n/a n/a
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-05-15 2026-03-31 13F FIRST SOLAR COM Put 78,100 -42.62 15,406 -56.67 n/a n/a n/a
2026-02-17 2025-12-31 13F FIRST SOLAR COM Put 136,100 -48.37 35,553 -38.84 n/a n/a n/a
2025-11-14 2025-09-30 13F FIRST SOLAR COM Put 263,600 -4.08 58,132 27.79 n/a n/a n/a
2025-08-14 2025-06-30 13F FIRST SOLAR COM Put 274,800 112.69 45,490 178.50 n/a n/a n/a
2025-05-15 2025-03-31 13F FIRST SOLAR COM Put 129,200 63.75 16,335 17.47 n/a n/a n/a
2025-02-14 2024-12-31 13F FIRST SOLAR COM Put 78,900 51.73 13,905 7.21 n/a n/a n/a
2024-11-14 2024-09-30 13F FIRST SOLAR COM Put 52,000 -7.47 12,971 2.37 n/a n/a n/a
2024-08-14 2024-06-30 13F FIRST SOLAR COM Put 56,200 -26.82 12,671 -2.26 n/a n/a n/a
2024-05-15 2024-03-31 13F FIRST SOLAR COM Put 76,800 -69.41 12,964 -70.03 n/a n/a n/a
2024-02-14 2023-12-31 13F FIRST SOLAR COM Put 251,100 70.24 43,260 81.50 n/a n/a n/a
2023-11-14 2023-09-30 13F FIRST SOLAR COM Put 147,500 -48.91 23,835 -56.57 n/a n/a n/a
2023-08-14 2023-06-30 13F FIRST SOLAR COM Put 288,700 37.94 54,879 20.55 n/a n/a n/a
2023-05-15 2023-03-31 13F FIRST SOLAR COM Put 209,300 -73.39 45,523 -61.35 n/a n/a n/a
2023-02-14 2022-12-31 13F FIRST SOLAR COM Put 786,400 0.29 117,795 13.58 n/a n/a n/a
2022-11-14 2022-09-30 13F FIRST SOLAR COM Put 784,100 13.77 103,713 120.88 n/a n/a n/a
2022-08-15 2022-06-30 13F FIRST SOLAR COM Put 689,200 0.00 46,955 -18.64 n/a n/a n/a
2022-05-16 2022-03-31 13F FIRST SOLAR COM Put 689,200 -12.67 57,714 -16.10 n/a n/a n/a
2022-02-14 2021-12-31 13F FIRST SOLAR COM Put 789,200 7.74 68,787 -1.63 n/a n/a n/a
2021-11-15 2021-09-30 13F FIRST SOLAR COM Put 732,500 89.03 69,924 99.37 n/a n/a n/a
2021-08-16 2021-06-30 13F FIRST SOLAR COM Put 387,500 139.49 35,073 148.30 n/a n/a n/a
2021-05-17 2021-03-31 13F FIRST SOLAR COM Put 161,800 294.63 14,125 248.25 n/a n/a n/a
2021-02-16 2020-12-31 13F FIRST SOLAR COM Put 41,000 4,056 n/a n/a n/a
2020-02-14 2019-12-31 13F FIRST SOLAR COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2019-11-14 2019-09-30 13F FIRST SOLAR COM Put 300,000 100.00 17,403 76.64 n/a n/a n/a
2019-08-15 2019-06-30 13F/A FIRST SOLAR COM Put 150,000 9,852 n/a n/a n/a
2018-11-14 2018-09-30 13F FIRST SOLAR COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2018-08-14 2018-06-30 13F FIRST SOLAR COM Put 500,000 26,330 n/a n/a n/a
2017-11-14 2017-09-30 13F FIRST SOLAR COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2017-08-14 2017-06-30 13F FIRST SOLAR COM Put 500,000 19,940 n/a n/a n/a
2017-05-15 2017-03-31 13F FIRST SOLAR COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2017-02-14 2016-12-31 13F FIRST SOLAR COM Put 400,000 100.00 12,836 62.52 n/a n/a n/a
2016-11-14 2016-09-30 13F FIRST SOLAR COM Put 200,000 7,898 n/a n/a n/a
2014-08-14 2014-06-30 13F FIRST SOLAR COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2014-05-15 2014-03-31 13F FIRST SOLAR COM Put 5,700 -21.92 398 -0.25 n/a n/a n/a
2014-02-14 2013-12-31 13F FIRST SOLAR COM Put 7,300 399 n/a n/a n/a
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.