First Solar, Inc.
US ˙ NasdaqGS ˙ US3364331070

SecurityFSLR / First Solar, Inc.
InstitutionCenterBook Partners LP
Latest Disclosed Ownership47,519 shares
Latest Disclosed Value $ 9,373,598
CenterBook Partners LP reports 900.82% increase in ownership of FSLR / First Solar, Inc.

On May 5, 2026 - CenterBook Partners LP filed a 13F-HR form disclosing ownership of 47,519 shares of First Solar, Inc. (US:FSLR) valued at $9,373,598 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 4,748 shares of First Solar, Inc.. This represents a change in shares of 900.82% during the quarter. The current value of the position is $13,258,276 USD.

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)
2026-05-05 2026-03-31 13F FIRST SOLAR COM 336433107 47,519 42,771 900.82 9,374 655.89 0.5036
2026-02-11 2025-12-31 13F FIRST SOLAR COM 336433107 4,748 1,240
2025-11-07 2025-09-30 13F FIRST SOLAR COM 336433107 40,480 26,771 195.28 8,927 293.43 0.4411
2025-08-12 2025-06-30 13F FIRST SOLAR COM 336433107 13,709 -1,417 -9.37 2,269 18.67 0.1261
2025-05-09 2025-03-31 13F FIRST SOLAR COM 336433107 15,126 -12,145 -44.53 1,912 -60.22 0.1218
2025-02-13 2024-12-31 13F FIRST SOLAR COM 336433107 27,271 12,475 84.31 4,806 30.24 0.2871
2024-11-14 2024-09-30 13F FIRST SOLAR COM 336433107 14,796 -2,442 -14.17 3,691 -5.04 0.2269
2024-08-12 2024-06-30 13F FIRST SOLAR COM 336433107 17,238 -41,031 -70.42 3,886 -60.49 0.2415
2024-05-10 2024-03-31 13F FIRST SOLAR COM 336433107 58,269 58,269 9,836 0.6789
2023-11-13 2023-09-30 13F FIRST SOLAR COM 336433107 0 -4,387 -100.00 0 -100.00
2023-08-14 2023-06-30 13F FIRST SOLAR COM 336433107 4,387 4,387 834 0.1043
2023-05-15 2023-03-31 13F FIRST SOLAR COM 336433107 0 -2,722 -100.00 0 -100.00
2023-02-13 2022-12-31 13F FIRST SOLAR COM 336433107 2,722 2,722 408 0.0672
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.