Shares of Salesforce.com (CRM) plunged 5.66% in pre-market trading on Thursday, as investors reacted to a federal court ruling that struck down President Donald Trump's "reciprocal" tariffs. The decision, which came late Wednesday, has raised concerns about potential impacts on the tech sector and broader market sentiment.

The U.S. Court of International Trade ruled that President Trump had overstepped his authority in imposing tariffs on imports from Canada, Mexico, and China. This unexpected development has created uncertainty around trade policies and their effects on technology companies like Salesforce, which rely heavily on global supply chains and international markets.

Despite Salesforce reporting better-than-expected first-quarter results and raising its full-year outlook, the positive news was overshadowed by the broader market concerns. The company posted adjusted earnings per share of $2.58 on revenue of $9.83 billion, both surpassing analysts' expectations. Salesforce also cited strong demand for its AI products as a driver for its improved forecast.

However, the market's focus on the potential implications of the court ruling appears to be outweighing Salesforce's individual performance. As the tech sector grapples with the possibility of renewed trade tensions and policy shifts, investors seem to be taking a cautious stance, leading to the significant pre-market drop in Salesforce's stock price.