* MSCI world equity index down 0.3 percent at 323.95
* European stocks defy falls in Asia; Wall St seen up
* Yen rises broadly; oil hits 5-month low below $105/bbl
By Natsuko Waki
LONDON, Sept 9 (Reuters) - Europe halted a slide in stocks and Wall Street was set for a firmer start on Tuesday, keeping alive some momentum from the bailout of U.S. mortgage firms Fannie Mae and Freddie Mac.
World stocks posted their biggest gains on Monday since the rescue of Bear Stearns in March after Washington seized control of the two mortgage firms, whose losses have weighed on the U.S. housing market and threatened to damage the financial system.
Optimism faded in Asia, where the benchmark equity index fell, and caution returned to currency markets where investors cut back on risk and bought the low-yielding yen and the dollar.
However, European stocks extended gains, helped by lower oil prices. UK equities rose more than 1 percent after technical trouble had halted trading on the London Stock Exchange for several hours on Monday.
Investors view the bailout of the two mortgage firms as positive, although doubts remain about how it would solve underlying credit problems faced by many banks and stem the flow of data pointing to a deep economic slowdown.
"While it is good news for the market ... there are still ongoing global growth woes," said Bernard McAlinden, investment strategist at NCB Stockbrokers.
The MSCI main world equity index <.MIWD00000PUS> fell 0.3 percent, having hit a 2-year low last week.
Asian stocks <.MIAP00000PUS> fell 2.1 percent, emerging stocks <.MSCIEF> lost 1.5 percent while the FTSEurofirst 300 index <
> managed to rise 0.8 percent.U.S. stock futures rose 0.6 percent <SPc1>, pointing to another higher day on Wall Street.
ECONOMIC SLOWDOWN
UK data showed retail sales down, house prices crumbling and companies more reluctant to hire staff than at any time in almost 15 years, adding to growing evidence that Britain is flirting with recession.
The dollar, boosted in recent weeks by signs of faltering growth outside the United States, hit a one-year high against major currencies <.DXY> before trimming gains.
"The large chunk of the dollar's rally has been driven by a relative growth shift in the global economy, with the U.S. relatively stable at a soft level while the rest of the world has been going down," Credit Suisse FX strategist Martin McMahon said. "If anything, the fact that the U.S. authorities are prepared to step in ... adds to the feeling that they are doing more to try and stabilise."
The low-yielding yen rose 0.2 percent to 107.94 per dollar <JPY=>, a sign of investors avoiding risk.
The December Bund future <FGBLc1> fell 41 ticks as European stocks gained. Emerging sovereign bond spreads <11EMJ> widened 1 basis points.
U.S. light crude <CLc1> fell 1.4 percent to $104.89 a barrel, hitting a five-month low, while gold <XAU=> slipped to $799.70 an ounce. (Additional reporting by Atul Prakash and Veronica Brown; editing by David Stamp)