By Ryan Vlastelica
NEW YORK (Reuters) - U.S. stocks rose in a volatile session on Wednesday on reports that new stimulative measures would be announced by the European Central Bank at its meeting tomorrow, though a tepid outlook from IBM limited the Dow's gains.
Market participants have been looking for more aggressive measures from central banks to combat the risk of deflation that has grown alongside a drop in oil prices. The Wall Street Journal reported that the ECB's Executive Board has proposed a quantitative easing program that would see the ECB buy roughly 50 billion euros ($58 billion) in bonds per month for a minimum of a year.
"The timing and duration of bond purchases is just as important as the actual amount, if not more important," said Clem Miller, portfolio manager of Wilmington International Funds in Baltimore.
"There are also a lot of questions about asset distribution, since the market is expecting a lot of government bond purchases, and it would be disappointed if it was more slanted to corporate bonds."
The day's gains were broad, with nine of the 10 primary S&P 500 sectors higher on the day. Energy shares were the day's biggest outperformers, up 1.8 percent alongside a 3 percent surge in the price of crude oil. Despite the gain, crude remains lower for the week after a drop of nearly 5 percent on Tuesday. Occidental Petroleum rose 1.5 percent to $79.20 on Wednesday.
International Business Machines Corp fell 2.9 percent to $152.41 after reporting lower-than-expected revenues and giving a 2015 profit target that was below estimates. The stock was among the biggest decliners on the S&P 500.
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While IBM limited the Dow's advance, the blue-chip index was lifted by UnitedHealth Group Inc, which rose 2.9 percent to $108.64 after its fourth-quarter earnings topped expectations.
Netflix Inc jumped 17 percent to $409.26 a day after the streaming and rental video company posted earnings that were above expectations and said it was growing faster overseas than previously expected.
With 11 percent of S&P 500 companies reporting earnings, 77 percent have topped expectations, according to Thomson Reuters data, above the long-term average of 63 percent. About 55 percent beat on revenue this quarter, below the historical average of 61 percent.
Qualcomm Inc fell 1.1 percent to $71.69 after Bloomberg reported Samsung Electronics Co Ltd would not use Qualcomm's processors for the next flagship Galaxy S smartphone.
At 11:00 a.m. (1600 GMT) the Dow Jones industrial average rose 75.91 points, or 0.43 percent, to 17,591.14, the S&P 500 gained 14.63 points, or 0.72 percent, to 2,037.18 and the Nasdaq Composite added 34.59 points, or 0.74 percent, to 4,689.43.
Advancing issues outnumbered decliners on the NYSE by 2,066 to 840, for a 2.46-to-1 ratio; on the Nasdaq, 1,383 issues rose and 1,130 fell, for a 1.22-to-1 ratio favoring advancers.
The S&P 500 was posting 29 new 52-week highs and 9 new lows; the Nasdaq Composite was recording 31 new highs and 59 new lows.
(Editing by Nick Zieminski)