A broad rally for U.S. stocks sent the Dow industrials to a 13-month high on Monday after the Group of 20 pledged to keep aid flowing to the world economy, strengthening investors' desire for risk.

The Dow Jones industrial average <.DJI> gained 203.52 points, or 2.03 percent, to end unofficially at 10,226.94. The Standard & Poor's 500 Index <.SPX> rose 23.78 points, or 2.22 percent, to finish unofficially at 1,093.08. The Nasdaq Composite Index <.IXIC> advanced 41.62 points, or 1.97 percent, to close unofficially at 2,154.06.

(Reporting by Leah Schnurr; Editing by Jan Paschal)