* World stocks, commodities advance on U.S. data
* Euro recovers on Greek aid move speculation
* Uncertainty keeps Greek spreads elevated
* Yen retreats; rise on yuan talk seen overdone
By Dominic Lau
LONDON, April 9 (Reuters) - World stocks and commodities rose on Friday as stronger U.S. retail sales boosted optimism about the economic recovery, while the euro recovered on speculation that debt-stricken Greece may soon receive help.
Greece's borrowing costs eased, though they remained at elevated levels.
European Union President Herman Van Rompuy was quoted as saying that the EU is prepared to intervene over Greece should it be required to. However, Greece's finance minister George Papaconstantinou said Athens will not seek to activate an EU-IMF aid mechanism agreed by European leaders last month.
"People are buying the euro on speculation the IMF may step in," said Geoffrey Yu, currency strategist at UBS in London.
Yu said any aid to Greece would likely trigger a relief rally in the euro, which has fallen more than 6 percent against the dollar this year on the back of the Greek debt crisis.
The euro <EUR=> gained 0.4 percent versus the dollar at $1.3409. Global equities measured by the MSCI All-Country World Index <.MIWD00000PUS> added 0.5 percent, ending a two-day losing run.
The pan-European FTSEurofirst 300 <
> index rebounded 1 percent after posting its biggest one-day decline in six weeks, while Greece's bank shares <.FTATBNK> advanced 1.4 percent.Signs that Europe's largest economy is on the path to recovery were underpinned by data showing Germany's trade surplus widened more than expected in February. [
]U.S. stock index futures <DJc1> <SPc1> <NDc1> put on 0.15 to 0.25 percent, indicating a firmer start for Wall Street. Earlier, Asian stocks outside Japan <.MIAPJ0000PUS> edged closer to a 22-month high.
The positive U.S. economic indicators also boosted commodity prices, with oil <CLc1> snapping two days of losses to trade above $86 a barrel, while copper <MCU3> gained 0.8 percent.
Gold <XAU=> rose 0.6 percent, extending its gains to a fifth day and heading for its biggest weekly rise since early January.
GREEK SPREADS STILL ELEVATED
The premium investors demand to buy Greek government debt <GR10YT=RR> rather than euro zone benchmark German Bunds was at 423 basis points, down from Thursday's high of 465 basis points.
The still elevated yields reflected continued fears Greece would face a liquidity crunch.
Two- and 10-year bond yields <GR2YT=TWEB><GR10YT=TWEB> eased to around 7.5 and 7.35 percent respectively.
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For a graphic showing the shift up in the Greek yield curve since last week and the start of the year, click on:
http://r.reuters.com/fuz96j
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Investors dumped Greek assets on Thursday, betting the country would have to ask the EU and International Monetary Fund to implement a support package, even as Athens sought to reassure markets it was not at risk of going bankrupt.
Yields on 10-year benchmark U.S. Treasuries <US10YT=RR> were down 1 basis point at 3.883 percent, while those on 10-year Bunds <EU10YT=RR> were up 2 basis points at 3.132 percent.
The yen was off session lows at 93.66 per dollar <JPY=> after spot yuan <CNY=CFXS> hit 6.8234 per dollar, its highest since October 2009.
Spot yuan was buoyed by rising expectations of faster appreciation for the Chinese currency.
(Additional reporting by Naomi Tajitsu and Kirsten Donovan in London and Lu Jianxin in Shanghai; editing by John Stonestreet)