By Amanda Cooper
LONDON, March 19 (Reuters) - European shares fell on Wednesday after most bank stocks surrendered early gains and a sell-off in the technology sector gathered steam following a results warning from Ericsson's <ERICb.ST> joint venture with Sony.
Banks were the top performing sector in early trade, led by a rally in BNP Paribas <BNPP.PA>, which rallied 4.7 percent after saying it would not bid for rival Societe Generale <SOGN.PA>.
But these gains quickly evaporated as speculation bubbled in the market over possible liquidity issues facing British banks, and the broader European market fell.
British mortgage lender HBOS <HBOS.L> fell as much as 17 percent, while Royal Bank of Scotland <RBS.L> lost 2.1 percent. Among continental European banks, SocGen <SOGN.PA> lost 5.7 percent, while Swiss banks UBS <UBSN.VX> and Credit Suisse <CSGN.VX> rose between 1.2 and 3.5 percent.
By 0934 GMT, the FTSEurofirst 300 index <
> of top European shares was down 0.8 percent at 1,232.50 points, having risen earlier by as much as 1.1 percent after the Federal Reserve cut U.S. rates on Tuesday and two major Wall Street banks beat expectations with their earnings."Obviously the banking sector is giving the most back," said Dresdner Kleinwort strategist Philip Isherwood.
"The Fed last year was talking about how the labour market was strong, the consumer would be fine, there was a bit of confined problems in subprime, the housing market was going to turn around. That message they're giving (now) is very different," he said.
"They're clearly in resuscitation mode ... the reason they're going to carry on cutting rates is the weakness is going to be more enduring than people think."
BANKING ON MORE WEAKNESS
The FTSEurofirst has fallen by 18 percent this year, led by declines in the banking sector as investors have grown increasingly worried about the lasting impact of the credit crunch on corporate balance sheets and the global economy.
Wednesday's cut in U.S. rates brings the Fed's tally up to three full percentage points of declines in its benchmark fed funds target rate to 2.25 percent since September, as it has raced to shield the economy against fallout from the global liquidity squeeze.
"Keep in mind that the effectiveness of rate cuts by the Fed currently is reduced because the monetary transmission mechanism is not functioning as normal," said Arthur van Slooten, a strategist at Societe Generale in Paris.
"So it's not a rate cut in itself, that is not the main thing that will get us out of this liquidity crisis, but obviously yesterday's news is good."
Wall Street heavyweight Morgan Stanley <MS.N> is set to report first quarter earnings later in the day. U.S. benchmark indexes rallied by more than 3 percent on Tuesday after Goldman Sachs <GS.N> and Lehman Brothers <LEH.N> reported declines in earnings but beat expectations.
Also helping to support equities was a narrowing in European credit spreads. The investment-grade Markit iTraxx Europe <ITRAC5EA=GFI> fell to 124.5 basis points, according to data from Markit. The index has shed over 40 basis points since hitting a record high of 166 basis points two days ago.
Technology stocks were an additional drag on the broader Europe equity market with Ericsson <ERICb.ST> losing more than 5 percent after its joint venture, Sony Ericsson, said slower growth meant first-quarter earnings could fall by more than half.
Finnish mobile phone maker Nokia <NOK1V.HE> fell 3.7 percent.
The DJStoxx index of European technology stocks <.SX8P> lost 3.3 percent, making it the worst performing sectoral index.
Airline stocks also fell after budget carrier EasyJet <EZJ.L> said record fuel costs would erode its full-year profit if they did not fall soon. Shares in low-cost rival Ryanair <RYA.I> fell by nearly 9 percent, while British Airways <BAY.L> lost 4.2 percent and Air France-KLM <AIRF.PA> dropped 1.9 percent.
Across the European sectors, auto stocks were the sole gainers. The DJStoxx index of European carmakers rose 0.5 percent, as the likes of Daimler <DAIGn.DE>, BMW <BMWG.DE> and Renault <RENA.PA> rose between 1.7 and 2.5 percent. The euro <EUR=> rose against the dollar -- normally a negative for exporters -- but stayed below its recent record highs. (Reporting by Amanda Cooper; editing by Rory Channing)