NEW YORK (CNN/Money) - Stocks tumbled Thursday, with eBay's earnings miss and profit warning sparking a broad selloff on worries about slowing earnings growth.

Warnings from Citigroup, Qualcomm and others didn't help.

The tech-fueled Nasdaq composite (down 27.71 to 2,045.88, Charts) slumped about 1.3 percent.

The Dow Jones industrial average (down 68.50 to 10,471.47, Charts) lost 0.6 percent and the broader Standard & Poor's 500 (down 9.22 to 1,175.41, Charts) index lost 0.8 percent.

So far this year, the two blue-chip indexes have tumbled in eight of 13 sessions with the Nasdaq falling in nine.

Treasury prices inched higher, sending their yields lower, and the dollar gained versus other major currencies. Oil declined and gold closed lower, as well.

While the selling was heaviest among tech issues, a wide variety of stocks fell. Of the 30 issues in the Dow industrials, 25 lost ground Thursday.

After the close, chip gear maker KLA-Tencor (Research) reported earnings of 61 cents per share, up from 22 cents a year ago and 2 cents more than expected.

Friday brings a few earnings reports. The most notable is Dow component United Technologies (Research), which is expected to post earnings of $1.28 per share, according to analysts' estimates. That would be up from $1.16 per share a year ago.

Friday also brings the first read on consumer sentiment in January from the University of Michigan. The sentiment index likely rose to 97.5 from 97.1 in December according to economist estimates.

eBay (down $19.72 to $83.33, Research) reported earnings late Wednesday that rose from a year earlier, but missed estimates by a penny a share, and also issued a first-quarter sales and earnings forecast that was short of expectations. The online auctioneer also announced a 2-for-1 stock split.

Its stock tumbled more than 19 percent in active trading on Nasdaq. The stock weighed on other Internet shares, including Google (down $3.38 to $193.92, Research) and Amazon.com (down $1.60 to $42.36, Research). The Goldman Sachs Internet (down 5.68 to 163.49, Charts) index fell 3.3 percent.

Stocks had slumped Wednesday on a mixture of disappointment about quarterly results and more profit-taking after the rally late last year.

The major gauges have slumped in the first two weeks of 2005, surprising some market watchers who were expecting last year's run to extend a bit into the new year.

"eBay is just today's problem, but it points out what's been bothering the market over the last few weeks," said Art Hogan, chief market analyst at Jefferies & Co. "Earnings growth is still going to be good, but it's decelerating."

Fourth-quarter earnings are expected to grow about 16 percent from a year earlier, according to First Call, which combines already reported results and forecasts for companies yet to report.

While that's not bad, it's well below the previous four quarters, when earnings grew by more than 20 percent a quarter.

Other active issues included Qualcomm (down $3.29 to $37.78, Research), which sank 8 percent. The wireless technology company warned late Wednesday that fiscal second-quarter earnings will miss analysts' estimates. The warning overshadowed its improved fiscal first-quarter earnings report.

Citigroup (down $0.27 to $47.77, Research) saw a small decline after reporting fourth-quarter earnings grew 12 percent, but the No. 1 financial services company also issued cautious guidance on its 2005 earnings.

Delta Air Lines (down $0.58 to $5.37, Research) tumbled 9.75 percent after posting a wider quarterly loss that missed analysts' already reduced estimates.

Bebe Stores (down $3.85 to $23.35, Research) sank more than 14 percent after the women's retailer reported fiscal second-quarter earnings of 40 cents per share, up from 23 cents a year ago, but a penny shy of expectations.

Lucent Technologies (down $0.14 to $3.28, Research) fell for the second session in a row. On Wednesday, the telecom gear maker reported fiscal first-quarter earnings that fell from a year earlier, but nonetheless met estimates. Revenue grew from a year earlier, but missed estimates.

Market breadth was negative. On the New York Stock Exchange, losers beat winners by more than two to one on volume of 1.69 billion shares. On the Nasdaq, decliners topped advancers by a similar margin on volume of 2.22 billion shares.

The report on leading economic indicators was released around 30 minutes after the start of trading. LEI rose 0.2 percent in December, in line with the expectations of economists surveyed by Briefing.com. LEI rose 0.3 percent in November.

A report on manufacturing in the Philadelphia region was released around noon. The Philadelphia Fed index fell to 13.2 in January from a downwardly revised 25.4 in December. Economists thought it would fall to 25.0.

U.S. light crude oil for February delivery fell 64 cents to settle at $46.91 a barrel on the New York Mercantile Exchange.

Treasury prices rose, after having fallen in the morning. The yield on the 10-year note fell to 4.16 percent from 4.17 percent late Tuesday. Treasury prices and yields move in opposite directions.

In currency trading, the dollar gained versus the euro and yen.

COMEX gold fell 70 cents to settle at $422.60 an ounce.