Stocks added to gains toward the end of a volatile session on Tuesday after the latest Fed minutes boosted expectations the central bank will act again to try to stimulate the economy.

The Dow Jones industrial average <.DJI> gained 80.18 points, or 0.69 percent, to 11,619.43. The Standard & Poor's 500 Index <.SPX> gained 8.51 points, or 0.70 percent, to 1,218.59. The Nasdaq Composite Index <.IXIC> gained 24.74 points, or 0.97 percent, to 2,586.85.

(Reporting by Edward Krudy; editing by xxx)