* Global stocks fall on Germany's short-selling ban
* Euro rallies after earlier slumping to 4-year low
* Bond prices slip as euro's bounce damps safety bid
* Oil drops to $69 a barrel on higher U.S. stockpiles (Updates with U.S. markets, changes byline, dateline, previous LONDON)
By Herbert Lash and Claire Milhench
NEW YORK/LONDON, May 19 (Reuters) - The euro rallied strongly on speculation related to the European Central Bank on Wednesday but equity markets on both sides of the Atlantic remained lower due to Germany's move to ban some naked short sales of stocks and bonds.
Despite a 1.0 percent bounce in the euro, assets perceived as being risky mostly fell in price as concerns that Germany's move heralded tighter financial regulation, boosting risk aversion.
Crude oil slid to $69 a barrel and gold prices shed about 2 percent. Key euro and U.S. dollar interbank lending rates pushed higher after German Chancellor Angela Merkel said the euro was in danger. For details see: [
] [ ] [ ]European stocks lost ground for the third time in four sessions as Germany's move to ban some naked short sales sent shockwaves across financial markets, pushing the euro to a four-year low before it rebounded. [
]The euro <EUR=> was rose to $1.2308 after sliding to a session low of $1.2146.
The MSCI all-country world equity index <.MIWD00000PUS> was down 1.6 percent, while the more volatile emerging markets index <.MSCIEF> fell 3.0 percent.
The Dow Jones industrial average <
> was down 82.98 points, or 0.79 percent, at 10,427.97. The Standard & Poor's 500 Index <.SPX> was down 7.66 points, or 0.68 percent, at 1,113.14. The Nasdaq Composite Index < > was down 20.57 points, or 0.89 percent, at 2,296.69.Investors reacted to any market rumor, such as intervention in currency markets or unscheduled meetings of ECB monetary authorities. The sharp moves suggested traders are waiting for any sign that the euro may have reached a short-term bottom.
"Euro is popping all over as talk is going around that the ECB may be considering intervention," said Brian Dolan, chief strategist at Forex.com in Bedminster, New Jersey.
Germany banned risky bets on bonds, stocks and credit protection in a tentative crack down on speculative trading, which has been widely blamed by leaders for exacerbating the euro zone debt crisis.
The decline in oil prices for a third day followed Tuesday's report from industry group the American Petroleum Institute showing crude inventories at the storage hub at Cushing, Oklahoma, rose to a record high.
"It's all financial markets-driven," said Carsten Fritsch, commodities analyst at Commerzbank. "The news regarding short-selling was quite surprising and it led to a rapid strengthening of the U.S. dollar and falling equity markets, and this affects commodity prices."
The benchmark 10-year U.S. Treasury note <US10YT=RR> was up 1/32 in price to yield at 3.35 percent but the 2-year U.S. Treasury note <US2YT=RR> was down 2/32 in price to yield 0.75 percent.
The dollar was down against a basket of major currencies, with the U.S. Dollar Index <.DXY> off 0.56 percent at 86.676.
Against the yen, the dollar <JPY=> was down 0.76 percent at 91.42.
U.S. light sweet crude oil <CLc1> fell 40 cents to $69.01 a barrel.
Spot gold prices <XAU=> fell $25.95 to $1,194.70 an ounce.
The MSCI index of Asia-Pacific shares outside of Japan <.MIAPJ0000PUS> dropped over 3 percent, while Japan's Nikkei average <
> closed down 0.5 percent, its weakest finish in 11 weeks. (Reporting by Nick Olivari and Ellen Freilich in New York and Alex Lawler and Jan Harvey in London; Writing by Herbert Lash)