The stock market closed narrowly mixed Monday after a strong earnings report from Caterpillar Inc. offset investors' concerns about financial regulation.
The Dow Jones industrial average, supported by Caterpillar, eked out a gain of 1 point. Broader market indexes fell modestly.
Banking shares fell as negotiations on financial overhaul legislation continued in Washington.
Caterpillar, whose results are seen as an economic indicator, reported earnings that beat analyst expectations after a one-time charge related to health care. The company said economic conditions are "definitely improving" and that orders for its heavy equipment are significantly higher than last year.
Investors also got some good news from Whirlpool Corp., which said profits doubled on higher sales of appliances in the U.S. and other countries. That's a signal that consumer spending is picking up.
News that car rental company Hertz Global Holdings Inc. agreed to buy rival Dollar Thrifty Automotive Inc. also helped stocks.
But investors showed caution throughout the day. A series of upbeat earnings reports have sent stocks steadily higher over the past week, and many analysts believe that strong corporate earnings results are already priced into the market.
Peter Cardillo, chief market economist at the brokerage Avalon Partners Inc. in New York, said the market is "perhaps defying logic at this point, and nevertheless moving up."