) are lower on the session by 1.27%, currently trading at $11.69. The stock has been moving largely lower over the past three months and is currently trading below the 50-day average. Options traders are focusing on calls today. A short while ago the October 2011 $12.50 call traded 1,200 times on open interest of 5,534 contracts. Taiwan Semiconductor Manufacturing Co., Ltd. is principally engaged in the research, development, manufacture and distribution of integrated circuit related products.