By Steven Russolillo

NEW YORK (MarketWatch) -- U.S. stocks opened higher Thursday, propelled by encouraging weekly jobless claims data and a plethora of corporate earnings reports.

The Dow Jones Industrial Average (DJI) gained 43 points, or 0.4%, to 11170, fueled by Exxon Mobil (XOM) , which was one of the biggest gainers in the blue-chip index.

The oil giant's third-quarter earnings rose a bigger-than-expected 55% as it benefited from stronger commodities prices and refining margins in the first full quarter that included its June acquisition of natural-gas producer XTO Energy. Shares rose 1.1%.

3M (MMM) was the Dow's worst performer, falling 3.2% after its earnings report disappointed investors. The consumer and industrial manufacturer's third-quarter profit jumped 16% on higher sales at a bulk of its operating divisions. But 3M merely narrowed its 2010 profit target due to the impact of acquisitions made in recent months.

The Standard & Poor's 500-share index (SPX) rose 0.5% to 1189, led by the materials and health care sectors. The technology-heavy Nasdaq Composite (RIXF) gained 0.4% to 2512.

Thursday's economic data helped drive the market's move. Initial unemployment claims declined by 21,000 to 434,000 in the week ended Oct. 23, the Labor Department said in its weekly report Thursday. That brings claims down to levels last seen since the week ended July 10. Economists surveyed by Dow Jones Newswires had expected claims would rise slightly by 3,000.

A slew of corporate quarterly reports also helped deliver the gains, which came after stocks dropped Wednesday in a jittery trading session. Stocks have surged over the last few months, but investors began to fret on Wednesday over the scope and potential for another round of quantitative easing by the Federal Reserve, which holds its key meeting next week.

Dow Chemical (DOW) shares rose 1.9% after the chemicals company reported a 25% drop in third-quarter profit because of the impact from divestitures. Results from continuing operations topped analysts' expectations as sales improved across the board.

Eastman Kodak's (EK) third-quarter loss narrowed on fewer charges and much higher margins. The camera maker's results topped Wall Street's expectations and shares jumped 9.1%.

Colgate-Palmolive's (CL) third-quarter earnings rose a bigger-than-expected 4.9% on lower overhead and interest-expense costs. Chief Executive Ian Cook said the consumer products company anticipates "mid-single digit earnings per share growth" for next year as it plans to strengthen its volume and market share. Colgate shares edged up 0.1%.

Las Vegas Sands (LVS) swung to a third-quarter profit on record revenue resulting from strong growth at its casinos in the China gambling enclave of Macau and the first full quarter of operations at its Singapore casino. Shares surged 11%.

Potash Corp. of Saskatchewan (POT) said its third-quarter earnings surged by more 60%, as strong demand for potash, phosphate and nitrogen fertilizer products on the back of rising crop prices lent support for the company's view that BHP Billiton PLC's (BHP) hostile $38.6 billion bid significantly undervalues the company. Potash shares slipped 2.2%.

In the currency markets, the dollar weakened against both the euro and the yen. The euro traded recently at $1.3885, up from $1.3768 late Wednesday in New York. The U.S. Dollar Index (DX), which tracks the currency against a basket of six others, fell 0.6%.

European stocks rose, lifted by Royal Dutch Shell (RDSA), which reported a profit that beat forecasts, and drug maker Sanofi-Aventis (SNY). The Stoxx Europe 600 Index gained 0.9%.

Asian markets were mixed. Strong bank earnings pulled Hong Kong and Australian stocks higher, while resources shares turned lower in Tokyo and Shanghai after a drop in commodity prices.

Demand for Treasurys rose, pushing the yield on the 10-year note (UST10Y) down to 2.68%. Crude-oil prices rose 67 cents to $82.60 a barrel, while gold futures edged up.

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