US stocks : Dow up 0.6 pct

US stocks closing: A volatile trading session ended with U.S. stocks mostly higher on Wednesday, even as Apple, the most valuable company in the United States, suffered its worst day of losses in almost four years.

In a strange occurrence, Apple accounted for the entirety of the Nasdaq 100's fall of 1.1 percent, while the Dow industrials - which do not include Apple as a component - enjoyed the best day since Nov. 28.

With the drop, Apple shed nearly $35 billion in market capitalization, its biggest one-day market-cap loss ever. The company's market value, or market capitalization, now stands at $506.85 billion.

"Today's move is because of index weightings, with the Nasdaq down because of Apple's decline," said Rex Macey, chief investment officer of Wilmington Trust in Atlanta. "The S&P is up because Apple isn't as big a weight in that index, and the Dow is up even more because it isn't there at all."

The broad market seesawed, with the S&P 500 dropping into negative territory before it rebounded off the 1,400 level, seen as a key support point over the past two weeks. Investors cited comments from President Barack Obama suggesting a potential near-term resolution to the "fiscal cliff" wrangling in Washington as a catalyst for the rebound.

Shares of The Travelers Cos Inc rose 4.9 percent to $74. The stock ranked as the Dow's top percentage gainer after the insurance company said it intended to resume stock buybacks it had temporarily suspended while it assessed its exposure to Superstorm Sandy. The company also said a preliminary estimate of net losses from Sandy was about $650 million after tax.

The Dow Jones industrial average rose 82.71 points, or 0.64 percent, to 13,034.49 at the close. The Standard & Poor's 500 Index gained 2.23 points, or 0.16 percent, to 1,409.28. But the Nasdaq Composite Index fell 22.99 points, or 0.77 percent, to end at 2,973.70.

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