First Solar, Inc.
CH ˙ SWX ˙ US3364331070
SecurityCH:FSLR / First Solar, Inc.
InstitutionState Street Corp
Latest Disclosed Ownership5,284,617 shares
Latest Disclosed Value $ 1,042,443,549
State Street Corp reports 0.43% increase in ownership of FSLR / First Solar, Inc.

On May 15, 2026 - State Street Corp filed a 13F-HR form disclosing ownership of 5,284,617 shares of First Solar, Inc. (CH:FSLR) valued at $1,042,443,549 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 5,261,896 shares of First Solar, Inc.. This represents a change in shares of 0.43% during the quarter.

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.

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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 5,284,617 22,721 0.43 1,042,444 -24.16 0.0360
2026-02-13 2025-12-31 13F FIRST SOLAR COM 336433107 5,261,896 -3,344 -0.06 1,374,565 18.38 0.0461
2025-11-14 2025-09-30 13F FIRST SOLAR COM 336433107 5,265,240 -60,842 -1.14 1,161,143 31.70 0.0403
2025-08-14 2025-06-30 13F FIRST SOLAR COM 336433107 5,326,082 111,927 2.15 881,680 33.74 0.0330
2025-05-15 2025-03-31 13F FIRST SOLAR COM 336433107 5,214,155 43,387 0.84 659,226 -27.67 0.0272
2025-02-14 2024-12-31 13F FIRST SOLAR COM 336433107 5,170,768 214,135 4.32 911,446 -26.28 0.0360
2024-11-14 2024-09-30 13F FIRST SOLAR COM 336433107 4,956,633 108,984 2.25 1,236,383 13.12 0.0503
2024-08-14 2024-06-30 13F FIRST SOLAR COM 336433107 4,847,649 -24,631 -0.51 1,092,951 32.89 0.0478
2024-05-15 2024-03-31 13F FIRST SOLAR COM 336433107 4,872,280 106,794 2.24 822,441 0.18 0.0368
2024-02-14 2023-12-31 13F FIRST SOLAR COM 336433107 4,765,486 225,158 4.96 820,998 11.90 0.0399
2023-11-14 2023-09-30 13F FIRST SOLAR COM 336433107 4,540,328 121,037 2.74 733,672 -12.66 0.0407
2023-08-14 2023-06-30 13F FIRST SOLAR COM 336433107 4,419,291 152,739 3.58 840,063 -9.47 0.0441
2023-05-15 2023-03-31 13F FIRST SOLAR COM 336433107 4,266,552 179,035 4.38 927,972 51.56 0.0524
2023-05-15 2022-12-31 13F/A-99 FIRST SOLAR COM 336433107 4,087,517 982,871 31.66 612,269 49.10 0.0360
2023-05-15 2022-12-31 13F FIRST SOLAR COM 336433107 4,087,517 982,871 612,269 0.0360
2022-11-15 2022-09-30 13F FIRST SOLAR COM 336433107 3,104,646 -100,699 -3.14 410,652 88.04 0.0260
2022-08-15 2022-06-30 13F FIRST SOLAR COM 336433107 3,205,345 -25,299 -0.78 218,380 -19.28 0.0131
2022-05-16 2022-03-31 13F FIRST SOLAR COM 336433107 3,230,644 60,266 1.90 270,534 -2.10 0.0134
2022-02-14 2021-12-31 13F FIRST SOLAR COM 336433107 3,170,378 161,310 5.36 276,330 -3.80 0.0131
2021-11-15 2021-09-30 13F FIRST SOLAR COM 336433107 3,009,068 237,969 8.59 287,246 14.53 0.0152
2021-08-16 2021-06-30 13F FIRST SOLAR COM 336433107 2,771,099 260,905 10.39 250,812 14.45 0.0132
2021-07-09 2021-03-31 13F/A-1 FIRST SOLAR COM 336433107 2,510,194 106,415 4.43 219,140 -7.84 0.0126
2021-05-17 2021-03-31 13F FIRST SOLAR COM 336433107 2,510,194 106,415 219,140 0.0126
2021-02-16 2020-12-31 13F FIRST SOLAR COM 336433107 2,403,779 197,154 8.93 237,782 62.78 0.0146
2020-11-10 2020-09-30 13F FIRST SOLAR COM 336433107 2,206,625 11,909 0.54 146,079 34.46 0.0100
2020-08-14 2020-06-30 13F FIRST SOLAR COM 336433107 2,194,716 76,177 3.60 108,638 42.21 0.0079
2020-06-19 2020-03-31 13F/A-1 FIRST SOLAR COM 336433107 2,118,539 9,014 0.43 76,395 -35.29 0.0067
2020-05-11 2020-03-31 13F FIRST SOLAR COM 336433107 2,118,539 9,014 76,395 6,709.0192
2020-02-06 2019-12-31 13F FIRST SOLAR COM 336433107 2,109,525 84,235 4.16 118,049 0.48 0.0081
2019-11-14 2019-09-30 13F FIRST SOLAR COM 336433107 2,025,290 13,585 0.68 117,487 -11.08 0.0088
2019-08-14 2019-06-30 13F FIRST SOLAR COM 336433107 2,011,705 -37,348 -1.82 132,129 22.03 0.0099
2019-05-15 2019-03-31 13F FIRST SOLAR COM 336433107 2,049,053 64,040 3.23 108,272 28.48 0.0084
2019-02-12 2018-12-31 13F FIRST SOLAR COM 336433107 1,985,013 -235,601 -10.61 84,274 -21.62 0.0077
2018-11-09 2018-09-30 13F FIRST SOLAR Common equity shares 336433107 2,220,614 -46,615 -2.06 107,526 -9.94 0.0083
2018-08-14 2018-06-30 13F FIRST SOLAR Common equity shares 336433107 2,267,229 -30,602 -1.33 119,394 -26.80 0.0100
2018-05-15 2018-03-31 13F FIRST SOLAR Common equity shares 336433107 2,297,831 -89,751 -3.76 163,101 1.17 0.0138
2018-02-14 2017-12-31 13F FIRST SOLAR Common equity shares 336433107 2,387,582 3,566 0.15 161,218 47.39 0.0130
2017-11-14 2017-09-30 13F FIRST SOLAR Common equity shares 336433107 2,384,016 42,420 1.81 109,380 17.13 0.0094
2017-08-14 2017-06-30 13F FIRST SOLAR Common equity shares 336433107 2,341,596 -25,674 -1.08 93,385 45.58 0.0083
2017-05-15 2017-03-31 13F FIRST SOLAR Common equity shares 336433107 2,367,270 -614,041 -20.60 64,148 -32.95 0.0057
2017-02-09 2016-12-31 13F FIRST SOLAR Common equity shares 336433107 2,981,311 158,568 5.62 95,668 -14.18 0.0090
2017-01-13 2016-09-30 13F/A-1 FIRST SOLAR Common equity shares 336433107 2,822,743 233,576 9.02 111,479 -11.19 0.0112
2016-11-14 2016-09-30 13F FIRST SOLAR Common equity shares 336433107 2,026,133 80,021
2016-08-12 2016-06-30 13F FIRST SOLAR Common equity shares 336433107 2,589,167 11,925 0.46 125,528 -28.87 0.0135
2016-05-20 2016-03-31 13F/A-1 FIRST SOLAR Common equity shares 336433107 2,577,242 -58,016 -2.20 176,477 1.48 0.0191
2016-05-12 2016-03-31 13F FIRST SOLAR Common equity shares 336433107 2,577,242 176,477
2016-02-16 2015-12-31 13F FIRST SOLAR Common equity shares 336433107 2,635,258 141,574 5.68 173,905 63.14 0.0190
2015-11-16 2015-09-30 13F FIRST SOLAR Common equity shares 336433107 2,493,684 -77,243 -3.00 106,597 -11.74 0.0124
2015-08-13 2015-06-30 13F FIRST SOLAR Common equity shares 336433107 2,570,927 -28,362 -1.09 120,777 -22.29 0.0129
2015-05-15 2015-03-31 13F FIRST SOLAR Common equity shares 336433107 2,599,289 -144,910 -5.28 155,420 27.01 0.0159
2015-02-11 2014-12-31 13F FIRST SOLAR Common equity shares 336433107 2,744,199 147,635 5.69 122,370 -28.39 0.0122
2014-11-12 2014-09-30 13F/A-1 FIRST SOLAR Common equity shares 336433107 2,596,564 121,171 4.90 170,879 -2.85 0.0184
2014-11-10 2014-09-30 13F FIRST SOLAR Common equity shares 336433107 2,596,564 170,879
2014-08-12 2014-06-30 13F FIRST SOLAR Common equity shares 336433107 2,475,393 31,350 1.28 175,899 3.12 0.0190
2014-05-15 2014-03-31 13F/A-1 FIRST SOLAR Common equity shares 336433107 2,444,043 -32,335 -1.31 170,571 26.06 0.0194
2014-05-13 2014-03-31 13F FIRST SOLAR Common equity shares 336433107 2,444,043 170,571
2014-02-06 2013-12-31 13F/A-1 FIRST SOLAR Common equity shares 336433107 2,476,378 69,811 2.90 135,306 39.83 0.0151
2014-02-06 2013-12-31 13F FIRST SOLAR Common equity shares 336433107 2,716,687 83,889
2013-11-12 2013-09-30 13F FIRST SOLAR Common equity shares 336433107 2,406,567 85,440 3.68 96,768 -6.79 0.0119
2013-08-08 2013-06-30 13F FIRST SOLAR Common equity shares 336433107 2,321,127 2,321,127 103,818 0.0135
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.