Synopsys (SNPS) shares plummeted 5.15% in intraday trading on Thursday after the company announced it had received a letter from the U.S. Department of Commerce's Bureau of Industry and Security (BIS) informing them of new export restrictions related to China. This development has forced the semiconductor design software provider to suspend its financial guidance for the third quarter and fiscal year 2025.

The company stated that it is currently assessing the impact of the BIS letter on its business. The new restrictions appear to be part of a broader U.S. government effort to curb the sale of advanced chip design software to Chinese customers. This move could significantly affect Synopsys' operations, as China represents a key market for the company's products.

The announcement comes amid rising tensions between the U.S. and China in the technology sector, particularly in the semiconductor industry. The restrictions are likely to have far-reaching implications not only for Synopsys but also for other companies in the electronic design automation (EDA) software industry. Investors are concerned about the potential loss of revenue from Chinese customers and the uncertainty surrounding the company's future financial performance.