Lofty valuations on US stocks a growing worry for investors
By Lewis Krauskopf NEW YORK (Reuters) -Some Wall Street banks are sounding caution on the U.S. stock rally, warning that stretched valuations have made equities more vulnerable to declines. The S&P 500 pulled back for the week though it is up more than 13% since the year began, fueled by signs of moderating inflation, excitement…