Microsoft's market cap is on track to surpass Apple's record

There’s about to be a new king of the stock-market jungle. Microsoft Corp. is set to become the most highly valued U.S. company ever, surpassing the record market capitalization set by long-time leader Apple Inc. Microsoft’s stock MSFT, +1.45% has been on a roll this year, as it has ridden the artificial-intelligence and cloud-computing wave. In contrast, Apple shares AAPL, +0.41% have lost ground, as the iPhone maker’s reliance on consumers, which has been struggling, has led them to underperform their ...