The Supreme Court is set to soon determine if President Donald Trump had the power to unilaterally impose tariffs that Costco now is seeking to claw back.

Costco’s newly filed lawsuit in the U.S. Court of International Trade serves as a warning shot for companies that have been paying tariffs

Get an update on Costco Wholesale Corporation's earnings, tariff-refund lawsuit risks, and potential special dividend. Click for macro trends affecting COST growth.

Costco nominated former President Joe Biden‘s commerce secretary, Gina Raimondo, to its board of directors on Thursday, days after suing the Trump administration to seek a full refund of tariffs that the retail giant paid this year for its foreign products.

Meanwhile, Nvidia announced that it bought $2 billion of Synopsys stock as part of a partnership to accelerate computing and AI engineering work. Nvidia CEO Jensen Huang called the agreement a "huge deal" on CNBC's "Squawk on the Street" yesterday. Synopsys shares surged nearly 5% in Monday's session, while Nvidia added more than 1%.