U.S. stocks fell from a six-week high, with investors on edge as oil futures plunged to unprecedented levels and a spate of corporate earnings on tap.
The S&P 500 halted a two-day gain and the Dow Jones Industrial Average fell more than 2%. Chevron and Exxon led losses in the blue-chip index as West Texas oil futures expiring Tuesday turned negative for the first time, primarily because the end of the May contract forces physical receipt at a time when storage capacity is low. June prices fell below $22 a barrel.
