(Recasts with U.S. markets, changes byline; dateline previous LONDON)
* Dollar falls as U.S. consumer confidence slides
* Bonds extend gains after fall in consumer confidence
* Oil rises on Iran tensions, fears of Nigeria strike
* Surges in financial shares lifts U.S. equity markets
By Herbert Lash
NEW YORK, June 24 (Reuters) - The dollar fell and U.S. government debt prices rose on Tuesday after data in both Europe and the United State showed consumers becoming more disheartened by rising energy costs.
Crude oil futures were slightly higher at more than $136 a barrel after a sharper earlier advance dissipated when Iran denied a market rumor of an attack on its nuclear facilities.
U.S. stocks initially extended losses after the consumer confidence report and the data that showed U.S. housing prices suffered record annual drops in April. But a rebound in recently battered financial shares helped push the Dow and broad S&P 500 into positive territory after midday.
European stocks also trimmed losses late in the session as banks recovered minutes before the closing bell, but worries over the U.S. economy kept the overall market in the red.
Trading volumes remained thin as investors waited to see what the Federal Reserve says on Wednesday at the conclusion of its regular two-day policy meeting. The U.S. central bank is expected to leave rates on hold at 2 percent, ending a string of cuts aimed at blunting the impact of the credit crisis.
Markets have been worried that the Fed has little room to maneuver with inflation still a problem and the economy weak. The economic worries were heightened as the Conference Board's report on consumer sentiment, as well as housing data from Standard & Poor's/Case-Shiller, suggested a likely retrenchment in American spending, which could keep a squeeze on economic growth.
U.S. home prices in April extended their record slump in annual terms, although the pace of declines ebbed month over month, though it did not provide much comfort for investors.
"Worries over a slowdown have spread from financial market professionals to people in the real economy, and it confirms what the market has been fearing for a while," said Jean-Claude Petit, head of equities at Barclays Wealth Managers France.
Financial stocks are down about 12 percent so far in June, according to the S&P financial index <.GSPF>. Many large U.S. bank stocks are trading at decade lows.
Before 1 p.m. the Dow Jones industrial average <
> was up 31.02 points, or 0.26 percent, at 11,873.38. The Standard & Poor's 500 Index <.SPX> was up 4.68 points, or 0.36 percent, at 1,322.68. The Nasdaq Composite Index < > was up 0.10 points, or 0.00 percent, at 2,385.84. Wall Street data:The FTSEurofirst 300 <
> index of top European shares ended 0.7 percent lower, at 1,214.25 points, its lowest close since mid-March. The index has lost about 9 percent so far in June.Banks in Europe staged a late recovery, with Royal Bank of Scotland <RBS.L> up 2.2 percent, Barclays <BARC.L> up 3.7 percent and BNP Paribas <BNPP.PA> up 2 percent.
The weakness in equities boosted bonds as investors pulled assets from riskier investments and turned to the perceived lower risk of government debt.
The benchmark 10-year U.S. Treasury note <US10YT=RR> rose 10/32 to yield 4.13 percent. The 30-year U.S. Treasury bond <US30YT=RR> rose 14/32 to yield 4.67 percent.
In European debt markets, stronger-than-expected French data upset Bunds in early trading. But a lower open on Wall Street, after a profit warning from package delivery company United Parcel Service <UPS.N>, stirred worries about the U.S. economy as did U.S. consumer confidence.
"The story has been the slide in equity markets and the consequent rebound in interest rate markets. It's been a continued day of pessimism that hasn't just hit the euro zone," said Investec economist David Page.
The euro hit a session high of $1.5621 <EUR=> after the consumer confidence data also showed expectations of future prosperity were at an all-time low.
The dollar fell against major currencies, with the U.S.Dollar Index <.DXY> down 0.31 percent at 73.208. Against the yen, the dollar <JPY=> rose 0.09 percent at 107.89.
The euro <EUR=> gained 0.41 percent at $1.5587. Analysts said that complicates matters for the Fed as it tries to prevent the U.S. economy from slipping into recession while also grappling with rapidly rising inflation.
"No doubt, this complicates life for the Fed," said Boris Schlossberg, senior currency strategist at DailyFX.com in New York. "If the U.S. consumer is indeed crumbling, does the Fed really have the power to raise interest rates at what looks like the beginning of a nasty little recession?"
Gold ticked higher as the dollar's softening against the euro and firm oil prices encouraged buyers. After the plunge on Monday the strong interest in gold cheered the market.
"There is growing optimism that the inflows we are seeing into exchange-traded funds and underlying physical demand are actually improving," said metals strategist Daniel Hynes and Merrill Lynch.
Tension over Iran's nuclear programme has played a big part in oil's rise to record levels near $140 a barrel.
U.S. light sweet crude oil <CLc1> rose 12 cents to $136.86 per barrel.
Spot gold prices <XAU=> rose $4.95 to $888.30 an ounce.
Surging energy costs in Asia coincided with signs of a global economic slowdown overnight in Asian markets, a bad omen for a region that relies on exports to help fuel profits.
Tokyo's Nikkei average <
> closed flat.The MSCI index of Asian stocks outside Japan <.MIAPJ0000PUS> inched down 0.1 percent, after at one point hitting its lowest since late March. (Reporting by Ellis Mnyandu, Steven C. Johnson and Chris Reese; and Jane Merriman, Jan Harvey and Kirsten Donovan in London and Blaise Robinson in Paris) (Reporting by Herbert Lash. Editing by Richard Satran)