Stock Bulls Get Wake-Up Call From Wall Street CEOs: Markets Wrap

Risky assets slid, with tech stocks and cryptocurrencies bearing the brunt of the selling, after long-simmering concerns about lofty valuations were fanned anew by a chorus of Wall Street executives who warned investors to brace for a pullback.

With the rally confined to fewer and fewer shares as sentiment and technical indicators showed signs of overheating, the chiefs of giants from Capital Group to Goldman Sachs Group Inc. and Morgan Stanley noted the possibility of a pullback as a healthy development.