* Investors uncertain about extent of Fed asset-buying
* U.S. Treasuries weighed by rise in consumer sentiment
* Stocks weakened by lackluster earnings, outlooks (Updates with U.S. markets' open, changes byline, dateline, previous: LONDON)
By Manuela Badawy
NEW YORK, Oct 26 (Reuters) - The dollar rose broadly on Tuesday as investors reassessed the likely amount of the Federal Reserve's asset-buying and scaled back their bets against the U.S. currency, while stocks zigzagged on lackluster earnings.
U.S. government debt prices fell after a consumer confidence index for October came in higher than expected, but the gauge was still near historically low levels as concerns about the labor market persisted. For details, see [
]The market expects the Fed to opt for more quantitative easing next week, but some easing is seen priced into an already weak dollar. How much easing the Fed decides on and how gradually it will implement is uncertain, keeping investors edgy about building more bearish bets on the dollar.
QE essentially involves printing more money, so a flood of dollars on the market would debase the currency's value.
"Everything is dependent on the FOMC (Federal Open Market Committee) and people don't want to take aggressive positions ahead of this very big decision," said Stephan Maier, currency strategist at Unicredit in Milan.
But some investors have begun to reconsider the likelihood of a big burst of QE after comments from some Fed officials late Monday.
Kansas City Fed President Thomas Hoenig called more asset purchases by the central bank a "very dangerous gamble." New York Fed President William Dudley said the U.S. economic context would determine whether an incremental or sizable approach to asset purchases was better.
"I think it's still possible that QE II is not a done deal for November, even though the market has been trading as if it is," said Brian Dolan, chief currency strategist at Forex.com in Bedminster, New Jersey.
"This is one of the last bullets the Fed has in its gun and it's going to be very reluctant to fire it unless circumstances are really dire. It might be put off until the first quarter. I think the market has started to consider that this week."
The dollar was up against a basket of major currencies, with the U.S. Dollar Index <.DXY> climbing 0.52 percent at 77.502 from a previous session close of 77.103.
The euro <EUR=> was down 0.55 percent at $1.3886 from a previous session close of $1.3963. Against the Japanese yen, the dollar <JPY=> was up 0.57 percent at 81.24 from a previous session close of 80.780, edging away from 15-year lows after Japan's finance minister Yoshihiko Noda warned the government would "act decisively" in currency markets if needed. [
]STOCKS TURN WEAKER
U.S. stocks were lower a day after hitting a five-and-a-half month high. Data showed consumer confidence rose slightly in October but remained near historically low levels as concerns about the labor market persisted.
Corporate results from the materials and technology sector were lackluster. The materials sector led the way down on soft commodity prices and disappointing outlooks from steel makers, including United States Steel Corp <X.N>.
The Dow Jones industrial average <
> was down 1.52 points, or 0.01 percent, at 11,162.53. The Standard & Poor's 500 Index <.SPX> was down 0.98 points, or 0.08 percent, at 1,184.64. The Nasdaq Composite Index < > was up 1.27 points, or 0.05 percent, at 2,492.12.Texas Instruments Inc <TXN.N> lost 1.6 percent to $28.52 a day after it warned that fourth-quarter revenue will be hurt by slowing demand. [
]Equities and the dollar have formed an inverse relationship exacerbated by expectations the U.S. Federal Reserve will embark on another round of economic stimulus.
MSCI's all-country world stock index <.MIWD00000PUS> was down 0.48 percent with its emerging market sub-index <.MSCIEF> sustaining a small loss.
The pan-European FTSEurofirst 300 <
> index of top shares was down 0.2 percent at 1,090.00 points, after rising 0.3 percent on Monday to end near a six-month high.European equities fell on both uncertainty about QE and comments from ArcelorMittal <ISPA.AS> that the basic resources sector faced extended weakness.
"We had a rally since August and now people are waiting to see whether this quantitative easing is going to come through or not. There are still some uncertainties and the market is going to be rangebound until the meeting of the Fed," said Koen De Leus, strategist at KBC Securities, in Brussels.
The Fed meets next on Nov. 2-3.
Earlier, Japan's Nikkei <
> closed down 0.3 percent, with exporters still in focus because of the strong yen.U.S. government debt fell on data showing higher-than-expected consumer confidence and as traders cut prices ahead of supply .
The benchmark 10-year U.S. Treasury note <US10YT=RR> was down 10/32, with the yield at 2.603 percent. The 2-year U.S. Treasury note <US2YT=RR> was down 2/32, with the yield at 0.3872 percent. The 30-year U.S. Treasury bond <US30YT=RR> was down 21/32, with the yield at 3.9528 percent.
In energy and commodities, crude oil <CLc1> rose 0.19 percent to $82.68 per barrel while spot gold <XAU=> fell $3.70, to $1335.70 an ounce. (Additional reporting by Ellen Freilich, Nick Olivari, and Leah Schnurr in New York and Jeremy Gaunt in London; Editing by Kenneth Barry)