Analysis-Buyback plans aren't enough to soothe investors after software-sector rout

By Sinéad Carew and Saqib Iqbal Ahmed March 3 (Reuters) - U.S. software companies have stepped up their stock buyback plans during a months-long rout. Investors and strategists are skeptical that it will stem the selling. Investors have been dumping software stocks since the fall, with the S&P 500 software index down 28% since late October, on worries that developments in artificial intelligence (AI) will dramatically disrupt the competitive landscape for the richly valued sector. Investors generally like b ...