NEW YORK – News that IBM will buy back more stock and raise its dividend helped pull major stock indexes out of a morning slump Tuesday.

IBM and other tech stocks led the Standard & Poor’s 500 index up. The broad-market measure ended April with a 1.8 percent gain, the sixth month in a row the index has climbed higher.

Worries about slower economic growth have rattled the stock market this month, but it has consistently bounced back. Brad Sorensen, director of market research at the brokerage Charles Schwab, said that’s a result of investors having few alternatives.

“Right now, it seems like every pullback in the market is seen as a buying opportunity,” Sorensen said. “People may say they’re getting nervous, but where else are you going to put money at this point? Into Europe with their political issues? Into Treasurys paying less than 1.7 percent?”

The S&P 500 edged up 3.96 points to close at 1,597.57. The slight gain of 0.3 percent pushed the index to an all-time high for the second consecutive day. The Dow fell as much as 84 points in morning trading but ended with a gain of 21.05 points at 14,839.80. That’s an increase of 0.1 percent.

In other trading, the Nasdaq composite index rose 21.77 points to 3,328.79, up 0.7 percent. The dollar fell against the yen and the euro, and the price of crude oil fell $1 to $93.46 a barrel. Gold edged up $4.70 to $1,472.10 an ounce.

A report of another record high in European unemployment helped drive money into U.S. government debt, briefly sending the yield on the benchmark 10-year Treasury note to lowest level of the year, 1.65 percent.

IBM said it will add a dime to its quarterly dividend and buy back up to $5 billion more of its own stock. Earlier this month, the company surprised investors when it reported a drop in quarterly earnings and sales. IBM’s stock rose $3.39 to $202.54.