* FTSEurofirst 300 falls 0.5 pct, down for third session
* Banks, oils among top losers on economic data, results
* BP falls more than 5 percent on oil seepage concerns
* For up-to-the-minute market news, click on [
]By Atul Prakash
LONDON, July 19 (Reuters) - European shares slipped for a third straight session on Monday, led lower by oils and banks, with poor economic figures in the past days and disappointing results from major U.S. companies hurting sentiment.
A downgrade of Ireland's sovereign bond ratings by Moody's on Monday also added to market nervousness. Moody's said it expects Irish economic growth to be below its historical trend over the next three to five years. [
]At 0809 GMT, the FTSEurofirst 300 <
> index of top European shares was down 0.5 percent at 1,007.49 points after falling 2 percent in the previous session and dropping more than 1 percent on Thursday.Financials were among the top losers, with the STOXX Europe 600 banking index <.SX7P> falling 1.1 percent. Bank of Ireland <BKIR.I> declined 3.3 percent, while Barclays <BARC.L>, Royal Bank of Scotland <RBS.L> and Societe Generale <SOGN.PA> fell 1 to 1.7 percent.
"Investors are trying to assess the degree of slowdown in the recovery that we have seen over the last 12 months," said Keith Bowman, analyst at Hargreaves Lansdown.
"The equity market has become extremely data-sensitive and every economic release will be looked at very closely. The market is likely to stay very volatile," he said.
Investors became cautious after data showed on Friday that U.S. consumer sentiment dropped to a near one-year low in July, while General Electric Co <GE.N>, Bank of America Corp <BAC.N> and Citigroup Inc <C.N> reported a drop in quarterly revenues.
"Traders are giving more weight to the top line than the bottom line currently because many see little room for cost cutting in coming quarters. Earnings ahead will depend on revenue growth," said Gerard Lane, analyst at Shore Capital.
Electrolux <ELUXb.ST>, the world's second-biggest home appliances maker, posted a slightly smaller-than-expected core profit. The company's shares slipped more than 6 percent.
Hungary's biggest bank OTP <OTPB.BU> and the foreign lenders most geared to the country -- Austria's Erste Group Bank <ERST.VI> and Raiffeisen International <RIBH.VI> -- fell after the IMF suspended talks with the government in Budapest about the country's 20 billion euro aid programme. [
]Erste Group and Raiffeisen fell 2.3 and 4.6 percent, respectively. [
]
BP UNDER PRESSURE
BP <BP.L> slipped more than 5 percent on concerns over seepage detected near the company's damaged well in the Gulf of Mexico.
"They might be leaking. They found some gases around it ... (and) there's a chance that it might be a leak," said Mic Mills, head of electronic trading at ETX Capital.
Engineers monitoring the well found seepage on the ocean floor that could mean problems with the cap that has stopped oil from gushing into the water, the U.S. government's top oil spill official said on Sunday. [
]Other oil shares also fell as crude prices <CLc1> declined on concerns about oil demand. Tullow Oil <TLW.L>, Repsol <REP.MC> and StatoilHydro <STL.OL> shed 0.2 to 0.6 percent.
Spain's Telefonica <TEF.MC> dropped its offer for Portugal Telecom's <PTC.LS> stake in Brazilian cellphone company Vivo on Saturday. Telefonica was down 0.5 percent, while Portugal Telecom fell 3.1 percent.
Dutch electronics group Philips <PHG.AS> was down 3.3 percent, in line with a broader stock market decline. It hiked its 2010 margin target after emerging market growth drove higher-than-expected sales and profit growth despite fears that a recovery was losing steam. [
]Across Europe, Irish stocks <.ISEQ> fell 0.9 percent, while Britain's FTSE 100 <
> dropped 0.5 percent. The Thomson Reuters Peripheral Eurozone Countries Index <.TRXFLDPIPU> fell 0.3 percent. (Additional reporting by Tricia Wright; Editing by Michael Shields)