The Taiwan Stock Exchange and Taipei Exchange will place six stocks under trading restrictions from Sept. 2 after abnormal price volatility. Genius Electronic Optical, Fositek, Amax Holding, Xintec and Co-Tech will use manual order matching every two minutes, while Gravity will have a 45-minute matching interval after gaining 40.71% over six trading sessions. Four stocks face restrictions through Sept. 8, while Xintec and Co-Tech remain restricted through Sept. 10. Amax Holding recorded the largest six-session gain at 50.37%, while Fositek posted the widest price spread at NT$440. The exchanges also put 45 stocks on a watch list, including major optics, thermal-management, substrate and PCB names. During restrictions, investors must pre-deposit funds or shares, and trading volume and volatility may contract as liquidity and execution flexibility decline.