Stocks set to fall ahead of auto sales, earnings

NEW YORK — A heap of data on the economy and corporate earnings will likely sway the stock and bond markets.

The nation's automakers release monthly sales results for April on Tuesday. U.S. sales of cars and trucks are expected to rise 19 percent. A separate report will likely show that factory orders rose in March as businesses purchased more manufactured goods.

In corporate news, Pfizer's net income increased by 10 percent, in part, because of lower costs for production. Its revenue fell slightly. Comcast and MasterCard report their results later in the day.

Ahead of the opening, Dow Jones industrial futures down 52, or 0.4 percent, at 12,712. Standard & Poor's 500 futures are down 6, or 0.5 percent, at 1,352. Nasdaq 100 futures are down 9, or 0.4 percent, at 2,393.