By Brian O’Connell Some are beginning to wonder whether chips have already peaked. The benchmark PHLX Index started the week at 3,434 this week before Monday’s wild session, which saw it end up 1.3%. As of the end of trading Friday, the index had lost 11.94% for the week, and 12.96% on a year-to-date basis. Trouble brews in the sector, as the major semiconductor manufacturers are looking to expand their chip-making facilities at a time when semiconductors are in high demand and short supply. Taiwan Semiconductor Mfg. Co. Ltd. The world’s biggest contract chipmaker (TSM) – Get Taiwan Semiconduc…