US STOCKS-Dow, S&P 500 edge up as energy shares rebound; Nasdaq slips
* Buyback, dividend hike, guidance lift Boeing, 3M, CVS
* Indexes: Dow up 0.4 pct, S&P up 0.3 pct, Nasdaq down 0.1 pct (Updates to afternoon)
By Caroline Valetkevitch
NEW YORK, Dec 16 (Reuters) - The Dow and S&P 500 were holding onto small gains in volatile trading Tuesday afternoon, helped by a rebound in energy shares and investor bets the Federal Reserve will be cautious in removing support in the face of a more fragile global economy.
But both indexes were well off their highs for the day, with consumer discretionary shares the biggest drag on the S&P, while the Nasdaq was lower. Shares of Amazon were down 2.5 percent.
The S&P 500 moved more than 40 points from its high of the day to its low.
Futures crumbled in early trading as the ruble neared 80 per U.S. dollar, down 21 percent. The Russian currency sharply pared its losses and was down about 3 percent, near 68 per dollar.
Brent crude fell as much as 4.2 percent but was last down 2.3 percent at $59.65 a barrel. U.S. crude, which fell as much as 4.1 percent, was last down 31 cents at $55.60.
Still the S&P energy index was up 1.6 percent, leading gains on the S&P 500, as investors snapped up beaten down shares. The index is down 15.6 percent for the year so far following a sharp selloff in oil prices since June. Continuación...