* FTSEurofirst 300 index falls 2.3 percent
* Banks, commodity stocks fall on German short-selling ban
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] By Joanne FrearsonLONDON, May 19 (Reuters) - European shares fell sharply on Wednesday morning, hit by concerns over tighter regulation after Germany banned naked short-selling of some bonds, stocks and credit protection, with banking stocks the top losers.
Analysts said there was concern the ban would restrict the ability of markets to manage risk and hedge positions.
A broader euro zone-wide ban could result in funds and business draining away from Frankfurt to London and other global financial centres, they said.
By 0942 GMT, the pan-European FTSEurofirst 300 <
> index of top shares was down 2.3 percent at 1,003.22 points, having set a low at 997.12.That was the first time the index had fallen below the 1,000 level since the announcement of a 750 billion euro ($930 billion) emergency debt package to stabilise the euro.
The index, which gained nearly 26 percent in 2009, is now down 4.1 percent for the year amid concern about euro zone sovereign debt.
The STOXX Europe 600 banking index <.SX7P> <0#.SX7P> fell 3 percent following a rebound in the previous session.
Germany imposed the ban after the market closed on Tuesday, to fight financial speculation which it blames for much of Europe debt crisis. [
]"Investors are somewhat spooked," said Stephen Pope, chief global equity strategist at Cantor Fitzgerald. "The worry is whether other markets will try and copy."
News that several Republicans in the United States will vote with Democrats to wrap up a debate on the sweeping reform of financial regulations and move toward final passage, added to market jitters. [
]
COMMODITIES WEIGH
Commodity stocks <0#.SXPP> were also hammered as investors appetite for riskier assets dampened on concern as to what the tighter regulation would mean for the prospects of global recovery.
Crude <CLc1> fell 1.6 percent and metal prices slipped, with copper <MCU3=LX> down 1.7 percent.
Energy groups BG Group <BG.L> and Total <TOTF.PA> fell 2.1 and 2.3 percent respectively. German Chancellor Angela Merkel said the euro was in danger, sparking concern Germany was panicking about the currency's fall to a four-year low against the dollar <EUR=>. [
]Germany's DAX <
> was down 2.4 percent, in line with the broader market, the FTSE 100 < > index fell 2.4 percent, and France's CAC 40 < > lost 2.9 percent.Spain's IBEX <
> lost 3.5 percent, Portugal's PSI 20 < > fell 2.2 percent and Italy's FTSE MIB <.FTMIB> was down 3.7 percent. (Editing by Dan Lalor) ($1 = 0.8054 euro)