Canadian Solar Inc.
US ˙ NasdaqGS ˙ CA1366351098

SecurityCSIQ / Canadian Solar Inc.
InstitutionRobotti Robert
Latest Disclosed Ownership398,070 shares
Latest Disclosed Value $ 5,513,270
Robotti Robert reports 16.20% increase in ownership of CSIQ / Canadian Solar Inc.

On May 13, 2026 - Robotti Robert filed a 13F-HR form disclosing ownership of 398,070 shares of Canadian Solar Inc. (US:CSIQ) valued at $5,513,270 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on February 18, 2026 disclosing 342,570 shares of Canadian Solar Inc.. This represents a change in shares of 16.20% during the quarter. The current value of the position is $7,746,442 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)
2026-05-13 2026-03-31 13F CANADIAN SOLAR COM 136635109 398,070 55,500 16.20 5,513 -32.29 0.7203
2026-02-18 2025-12-31 13F/A-1 CANADIAN SOLAR COM 136635109 342,570 -133,700 -28.07 8,143 31.11 1.4624
2026-02-12 2025-12-31 13F CANADIAN SOLAR COM 136635109 342,570 -133,700 8,143 1.1460
2025-11-12 2025-09-30 13F CANADIAN SOLAR COM 136635109 476,270 -11,355 -2.33 6,211 -89.97 1.0775
2025-08-13 2025-06-30 13F CANADIAN SOLAR COM 136635109 487,625 -3,255 -0.66 61,916 1,358.20 10.4053
2025-05-13 2025-03-31 13F CANADIAN SOLAR COM 136635109 490,880 3,000 0.61 4,246 -21.73 0.8508
2025-02-12 2024-12-31 13F CANADIAN SOLAR COM 136635109 487,880 173,499 55.19 5,425 2.96 0.9522
2024-11-14 2024-09-30 13F CANADIAN SOLAR COM 136635109 314,381 1,720 0.55 5,269 14.27 0.8020
2024-08-14 2024-06-30 13F CANADIAN SOLAR COM 136635109 312,661 -2,815 -0.89 4,612 -26.02 0.7224
2024-05-15 2024-03-31 13F CANADIAN SOLAR COM 136635109 315,476 151,610 92.52 6,234 45.02 0.8459
2024-02-14 2023-12-31 13F CANADIAN SOLAR COM 136635109 163,866 -3,520 -2.10 4,298 4.35 0.6188
2023-11-14 2023-09-30 13F CANADIAN SOLAR COM 136635109 167,386 -2,200 -1.30 4,119 -37.22 0.6050
2023-08-14 2023-06-30 13F CANADIAN SOLAR COM 136635109 169,586 88,805 109.93 6,561 104.07 1.0594
2023-05-12 2023-03-31 13F CANADIAN SOLAR COM 136635109 80,781 -1,201 -1.46 3,216 26.92 0.5664
2023-03-03 2022-12-31 13F/A-1 CANADIAN SOLAR COM 136635109 81,982 -345 -0.42 2,533 -17.41 0.5050
2023-02-14 2022-12-31 13F CANADIAN SOLAR COM 136635109 81,982 -345 2,533 0.2400
2022-11-14 2022-09-30 13F CANADIAN SOLAR COM 136635109 82,327 -380 -0.46 3,067 19.11 0.7287
2022-08-12 2022-06-30 13F CANADIAN SOLAR COM 136635109 82,707 540 0.66 2,575 -11.36 0.6299
2022-05-16 2022-03-31 13F CANADIAN SOLAR COM 136635109 82,167 686 0.84 2,905 13.92 0.5879
2022-02-14 2021-12-31 13F CANADIAN SOLAR COM 136635109 81,481 -626 -0.76 2,550 -14.94 0.5168
2021-11-15 2021-09-30 13F CANADIAN SOLAR COM 136635109 82,107 520 0.64 2,998 -18.04 0.6878
2021-08-16 2021-06-30 13F CANADIAN SOLAR COM 136635109 81,587 1,950 2.45 3,658 -7.44 0.9181
2021-05-17 2021-03-31 13F CANADIAN SOLAR COM 136635109 79,637 -1,170 -1.45 3,952 -4.56 0.9972
2021-02-16 2020-12-31 13F CANADIAN SOLAR COM 136635109 80,807 -250 -0.31 4,141 45.55 1.2083
2020-11-16 2020-09-30 13F CANADIAN SOLAR COM 136635109 81,057 61,347 311.25 2,845 648.68 1.0976
2020-08-14 2020-06-30 13F CANADIAN SOLAR COM 136635109 19,710 19,710 380 0.1636
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.