Stocks ended an erratic day with a modest loss Thursday as investors tried to reconcile another batch of conflicting economic signals.

The Dow Jones industrial average closed down 30 points after falling as much as 110 and rising 87 during the course of the day. The other big market indexes also closed slightly lower.

Thursday's trading fit with the market's months-long pattern. Investors are torn between upbeat earnings news from companies and reports that point to an uncertain recovery. That indecision was clear as stocks rose on strong earnings at Southwest Airlines Co., ExxonMobil Corp. and other companies, then fell on disappointment over a slight drop in first-time claims for unemployment benefits.

Traders were also uneasy ahead of the first reading on U.S. gross domestic product for the April-June quarter, to be released Friday.

"This is a market that is trying to ascertain how deep the downturn is going to be and it is a market that's future-looking," said Quincy Krosby, a market strategist with Prudential Financial.

"It's looking at numbers five to six months from now, trying to get a portrait of the economy and where earnings are going to be. Until it gets clarity on that it's going to be a choppy market."

There was little to help traders get that clarity Thursday. The Labor Department said initial claims for unemployment benefits dropped by a modest 11,000 to 457,000 last week. That's slightly better than the 459,000 forecast by economists polled by Thomson Reuters, but investors were disappointed because the drop was so small.

"They saw it was more of the same," said Bryan Jordan, director of financial markets analysis at Nationwide Investments. "This is an unusually stagnant labor market."

The Dow fell 30.72, or 0.3 percent, to 10,467.16. Although the Dow has fallen 70 points over the past two days, it is up 7.1 percent for July with one trading day to go.

A big chunk of the July gain came in just four days that ended Tuesday, as the average rose 420 points in response to strong earnings. On Wednesday, however, the Federal Reserve's assessment of the economy region by region reaffirmed for investors the fact that the recovery has slowed. Stocks fell and they continued their slide amid Thursday's uncertainty.

The Standard & Poor's 500 index fell 4.60, or 0.4 percent, to 1,101.53. The Nasdaq composite index fell 12.87, or 0.6 percent,to 2,251.69.

Rising stocks were narrowly ahead of losers on the New York Stock Exchange. Consolidated volume, which includes shares traded on other exchanges, was light at 4.7 billion shares, up from Wednesday's 4.1 billion. Many investors sat out the day because of the market's inability to settle on a direction.

Bond prices were mixed. The yield on the 10-year Treasury note, which moves opposite its price, was 2.99 percent, unchanged from late Wednesday. The 10-year yield helps set interest rates on mortgages and other consumer loans.

Traders will look next to Friday's GDP report for a sense of how the recovery is doing. Economists surveyed by Thomson Reuters are forecasting that the GDP, the broadest measure of the economy, slowed in the second quarter to an annual rate of 2.5 percent as the government cut back on stimulus programs. That would be down from the first quarter's 2.7 percent.

Southwest reported income that beat analyst forecasts. The company reported heavy traffic to start the summer travel season. ExxonMobil's earnings rose as a result of higher oil prices.

Japanese electronics maker Sony also reported strong earnings because of a jump in sales of televisions and PlayStation 3 gaming consoles.

Sony shares trading in the U.S. jumped $2.34, or 7.9 percent, to $31.90. Southwest shares were unchanged at $12.01. ExxonMobil dipped 57 cents to $60.34 after rising earlier in the day.

Colgate-Palmolive's earnings beat forecasts, but revenue fell short of expectations. It also said it would take a bigger charge than previously expected because of Venezuela's devaluation of its currency. When currencies in other countries fall, overseas profits for U.S. companies also come in lower when they're translated into dollars.

The consumer products maker's stock fell $5.74, or 6.8 percent, to $78.12.

Britain's FTSE 100 fell 0.1 percent, Germany's DAX index fell 0.7 percent, and France's CAC-40 dropped 0.5 percent. Japan's Nikkei stock average fell 0.6 percent.