Updated from 4:06 p.m. ESTStocks strengthened for a second straight session Monday, led by technology, as more positive economic news and strong sales guidance from Wal-Mart ( WMT) helped restore an appetite for risk. The Nasdaq added 30.42 points, or 1.46%, to 2120.30, bringing its two-day gain to 57 points, or 2.8%. The index was paced by its economically sensitive components, including Apple ( AAPL), up 5.7%; Yahoo! ( YHOO), up 3.9%; Staples ( SPLS), up 3.3%; and eBay ( EBAY), up 3.1%. The Dow Jones Industrial Average gained 37.30 points, or 0.36%, to 10,440.07, and the S&P 500 rose 8.60 points, or 0.72%, to 1207.01. "With the cross above 1200 on the S&P 500, we're now testing the market," said Barry Hyman, equity market strategist with Ehrenkrantz King Nussbaum. "If we can keep oil lower, the commodity price story becomes more tame and will filter back into the market. It's still a bit confusing. We're back within trend, and I'd play this rally for what it's worth." About 1.89 billion shares traded on the New York Stock Exchange, with advancers beating decliners by a 3-to-1 margin. Trading volume on the Nasdaq was 1.91 billion shares, with advancers outpacing decliners 7 to 3. In other markets, the 10-year Treasury was up 3/32 in price to yield 4.56%, while the dollar was higher against the yen and euro. "I'm surprised at the continuation from Friday, but it's very welcome," said Paul Nolte, director of investments with Hinsdale Associates. "Lower oil and merger activity today set the tone for us. Interest rates remain stuck where they're at, though, which may be the only black mark." The tech sector was also aided by a 1.8% gain in the Philadelphia Semiconductor Sector Index. Marvell Technology ( MRVL) was the largest gainer of the components, adding 4.5%. Equities got an early lift from Wal-Mart, which said over the weekend that October same-store sales should rise by 4.3% from a year ago. The prediction tops its previously offered range of 2% to 4% growth. Wal-Mart was the Dow's best gainer, finishing up 4% to $47.31. Oil fell sharply Monday as traders began to embrace the end of the hurricane season. In Nymex floor trading, crude for December delivery finished down $1.46 to $59.76 a barrel. The contract made three different runs at the $60 support level last week, each time bouncing before the end of trading. Gasoline futures were down 10 cents to $1.53 a gallon, while natural gas was lower by 85 cents to $12.20 per million British thermal units.