[Taiwan shares end down amid tax concerns; TSMC bucks downturn] Shares in Taiwan continued to show weakness amid ongoing concerns over the possible impact of the government not extending its reduced transaction tax for day trading, dealers said Monday. Selling was seen almost across the board, in particular among old economy stocks, while the bellwether electronics sector fell but still outperformed the broader market, helped by contract chipmaker Taiwan Semiconductor Manufacturing Co. (TSMC), dealers said. The Taiex, the Taiwan Stock Exchange’s (TWSE) benchmark weighted index, ended down 123.34 points, or 0.73 percent, at 16,858.77, after moving between 16,773.57 and 16,983.59....