Thursday’s 10 Worst-Performing Stocks

4. FST Corp. (NASDAQ:KBSX)

FST Corp. declined by 28.4 percent on Thursday to end at $2.9 apiece as investors resorted to profit-taking following a surge in Tuesday’s share price.

According to InvestingPro analysis, KBSX’s relative strength index suggests that the company is now trading in oversold conditions.

The price level reflects a significant downturn for the company which has been navigating challenges over the past year.

Since the start of 2025, KBSX’s stock price already fell by 69.8 percent and declined by 57 percent from $6.78 at the start of the month. On Monday, the company also touched a new low of $1.26.

KBSX is a Taiwan-based company mainly engaged in the research and development, production, and sales of golf shafts. Its customers cover the world’s major golf brand manufacturers and distributors.