Market ends up as Mubarak quits
The S&P's five-month surge, which has taken it up almost 27 percent, has confounded those calling for a correction, but weak volume undercuts the unfailingly bullish direction in equities.
Financials led on the back of the reduced uncertainty, rising throughout the trading day.
The Dow Jones industrial average was up 43.97 points, or 0.36 percent, at 12,273.26. The Standard & Poor's 500 Index was up 7.28 points, or 0.55 percent, at 1,329.15. The Nasdaq Composite Index was up 18.99 points, or 0.68 percent, at 2,809.44.
For the week, the Nasdaq and S&P 500 each gained 1.4 percent while the Dow rose 1.5 percent.
(Reporting by Caroline Valetkevitch; Editing by James Dalgleish)