The stock market's very rough April saw some of the biggest gainers of the first three months take some of the biggest dings to their market caps. And at the same time, some of the sectors that struggled in Q1 saw a similar reversal of fortune in April...

Anything's possible on the stock market. Could Apple be destined to fall back to earth?...

Which of these tech titans is the better AI play?...

Three of the Wall Street's heavyweight technology firms have reported better-than-expected sales at their cloud computing units in recent days, as interest in artificial intelligence drives a rebound in spending by corporate customers. Growth in the $270 billion cloud infrastructure market, a cash engine for Amazon.com, Microsoft and Alphabet, gives the clearest sign yet that AI investment is bearing fruit after investors drove those stocks to record highs, thanks to optimism about the emerging technology. Many big customers have started spending again on cloud computing after pausing last year to cut costs, executives and analysts said...