Since then, however, investor interest has broadened and some funds appear to have moved from high-priced technology shares into value stocks. A retreat from technology stocks can have a particularly large effect on benchmark indexes because the sector attracted such a heavy concentration of investment during the rally. Even when some of that money moves into other industries, losses in highly valued semiconductor stocks can outweigh gains elsewhere. The uncertainty was when that change would begin, making it difficult for investors to reduce their exposure while semiconductor stocks continued rising. Automobiles and auto parts are among the sectors that may benefit if money continues leaving technology stocks.