* FTSEurofirst 300 up 0.6 pct, recoups some of Tuesday loss
* Siemens rises 3.6 pct after posting strong earnings
* Bayer drops 3.7 pct after results miss forecast
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By Blaise Robinson
PARIS, April 29 (Reuters) - European stocks gained ground in early trade on Wednesday, reversing some of the previous session's losses, as results from a number of bellwethers such as Siemens <SIEGn.DE> and Santander <SAN.MC> pleased investors.
Shares of Siemens surged 3.6 percent after reporting strong first-quarter figures, with investors shrugging off a widely anticipated move by the German electronics and engineering conglomerate to trim its outlook.
Spain's Santander <SAN.MC>, the euro zone's largest bank, gained 4.4 percent after beating forecasts for first-quarter profits.
At 0823 GMT, the FTSEurofirst 300 <
> index of top European shares was up 0.6 percent at 806.20 points, after losing 1.5 percent on Tuesday, hit by growing fears over the economic impact of the swine flu outbreak."Analysts had been expecting really bad corporate figures, and now some of the results beat forecasts, but it doesn't mean things are improving," said David Thebault, head of quantitative sales trading at Global Equitites.
Royal Dutch Shell <RDSa.L> gained 0.4 percent after outperforming analysts' forecasts, though it reported sharply lower first-quarter profit due to lower crude prices.
French tyre maker Michelin <MICP.PA> rose 6.7 percent after posting first-quarter sales that were slightly higher than expected and said it was well on track to generating positive free cash flow in 2009.
"We might have reached a turning point... With dealers' destocking almost over, markets should stabilize soon, and the group is starting to get the full benefit of raw mat price collapse," Deutsche Bank analyst Gaetan Toulemonde wrote in a note.
"Thus, the rebound of margins could be as sharp as the decline was," Toulemonde wrote.
French pharmaceutical group Sanofi-Aventis <SASY.PA> rose 2.7 percent after announcing a cleanout of its pipeline as it posted stronger-than-expected first-quarter earnings.
On the downside, pharmaceutical and chemicals group Bayer <BAYG.DE> shed 3.7 percent after the company's first-quarter results broadly missed expectations.
SAP <SAPG.DE> dropped 1.7 percent after the software maker posted disappointing first-quarter figures.
No.1 steelmaker ArcelorMittal <ISPA.AS> tumbled 4.4 percent, as investors shunned the stock after the company's much-watched earnings before interest, tax, depreciation and amortisation (EBITDA) dropped 82 percent in the January to March period, missing analyst forecast.
Later in the session, investors' focus will move to U.S. GDP data and an outlook from the U.S. Federal Reserve, looking for signs of recovery in the world's biggest economy.
The median forecast for the gross domestic product (GDP) was for a contraction of 4.9 percent on a annualised basis.
The Federal Reserve ends a two-day policy meeting later on Wednesday and, with interest rates already near zero, analysts will be looking for any moves to inject more money into the financial system and the central bank's assessment of the state of the economy.
The FTSEurofirst 300 <
> index of top European shares is down 3.1 percent so far in 2009, but has risen nearly 25 percent since hitting a multiyear low in early March. (Reporting by Blaise Robinson; editing by Karen Foster)