Why Is CSIQ Stock Spiking Premarket Today?

• CSI Solar, in which Canadian Solar owns about 64% stake, posted a net profit of RMB519 million ($76.06 million) for the first quarter of 2026, compared to RMB47 million in the comparable period of last year. 
• The company’s profit increase was largely driven by refunds of U.S.-levied tariffs.
• However, CSI Solar’s operating revenue came in at RMB7.13 billion, down from RMB8.59 billion a year earlier.

Shares of Canadian Solar Inc. (CSIQ) rose more than 3% in Tuesday’s premarket trading session after the company said that its Shanghai-based subsidiary, CSI Solar, had posted a sharp growth in profitability despite softer sales.

In a filing with the U.S. Securities and Exchange Commission, the renewable energy company said that CSI Solar Co. had reported a nearly 1,000% jump in its net profit, primarily due to tariff refunds.

The Tariff Bump

The subsidiary, in which Canadian Solar owns about 64% of the shares, posted a net profit of RMB519 million ($76.06 million) for the first quarter of 2026, compared with RMB47 million in the comparable period last year.

The company’s profit increase was largely driven by refunds of U.S.-levied tariffs. “Pursuant to the final ruling issued by the U.S. Supreme Court on February 20, 2026, certain reciprocal tariffs previously levied by the U.S. Government under the International Emergency Economic Powers Act (IEEPA) were deemed to lack legal authorization, and the relevant tariff measures are invalid ab initio,” the company said in the filing.

A subsequent court decision mandating refunds led the U.S. Customs to launch a refund program in April 2026, it said. The company also added that it qualifies and has enforceable rights to claim these refunds.

Meanwhile, Canadian Solar said its subsidiary’s operating revenue was RMB7.13 billion, down from RMB8.59 billion a year earlier.

How Did Stocktwits Users React?

On Stocktwits, retail sentiment around CSIQ stock was in the ‘bullish’ territory amid ‘high’ message volumes.

CSIQ stock has gained more than 41% in the last year.

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