By Richard Leong
NEW YORK (Reuters) - U.S. stock prices held steady on Wednesday as Federal Reserve chair Janet Yellen affirmed a likely interest rate increase by year-end, while the euro fell ahead of a Greek government vote on whether to accept tough terms for a vital third bailout.
Oil prices fell on worries of growing supply from Iran following a landmark deal that would lift sanctions that have curbed its oil sales for several years.
"If the economy evolves as we expect, economic conditions likely would make it appropriate at some point this year to raise the federal funds rate," Yellen said in a testimony prepared for a U.S. House panel.
Economists reckoned the U.S. central bank will likely end its near-zero rate policy in September, while traders bet such a move would occur in December.
While a Fed "lift-off" raises domestic borrowing costs, the expected slow pace of rate normalization shouldn't cut much into corporate profits, analysts said.
?The Fed just wants to catch up with it and get to more normalized levels," said Tim Ghriskey, chief investment officer of Solaris Group in Bedford Hills, New York.
In early U.S. trading, the Dow Jones industrial average <.DJI> rose 5.64 points, or 0.03 percent, to 18,059.22, the S&P 500 <.SPX> gained 1.92 points, or 0.09 percent, to 2,110.87 and the Nasdaq Composite <.IXIC> added 13.02 points, or 0.26 percent, to 5,117.91.
The dollar strengthened against a basket of currencies, with the dollar index last up 0.5 percent at 97.10 <.DXY>.
Benchmark U.S. 10-year Treasuries yields
As traders monitored fresh clues on the timing of a Fed rate increase, they awaited news on whether Greece's parliament will approve a third bailout to avert bankruptcy and a possible exit from the euro zone currency bloc.
The euro was down 0.4 percent against the dollar at $1.09680
The pan-European FTSEurofirst 300 index <.FTEU3> was up 0.4 percent to 1,586.80, rising five days in a row.
Yields on German Bunds
Steady to higher U.S. and European equity prices offset the drop in some Asian and emerging market stocks despite better-than-expected Chinese economic data.
In the oil market, Brent crude
Spot gold prices
(Additional reporting by Marius Zaharia in London, Lisa Twaronite in Tokyo and Emelia Sithole Matarise in London; Editing by Mark Trevelyan and Meredith Mazzilli)