Shares of Microsoft Corp. MSFT, -5.20% dove 5.8% in midday trading Monday, to put them on track for a six-month low, and enough to pace the 29-of-30 Dow Jones Industrial Average DJIA, -3.10% components that are losing ground. The stock's $17.27 price decline, which is the stock's second-biggest-ever price decline behind the $23.41 record selloff on March 16, 2020, was slashing about 114 points off the Dow's price, while the Dow dropped 1,002 points, or 2.9%.