White-Hot Stock Rally Masks Mammoth Value Swings

White-Hot Stock Rally Masks Mammoth Value Swings

An Apple store in Santa Monica, Calif., last month. Apple’s market value rose $265 billion in five sessions before the firm’s January earnings report.

An Apple store in Santa Monica, Calif., last month. Apple’s market value rose $265 billion in five sessions before the firm’s January earnings report.

Photo: Marcio Jose Sanchez/Associated Press