The S&P 500 added 1.1% and the Nasdaq climbed 1.3%. The Dow Jones Industrial Average gained 1%, or 180 points.
Today, the Dow futures moved higher by 55 points, up about 0.31% at 8:43 a.m. ET, with other index futures also higher. S&P 500 E-mini futures were up 0.29% and Nasdaq 100 E-mini futures were higher by 0.27%.
The euro fell 0.3% against the dollar and the pound was lower by 0.09%.
Over the weekend, more whispers of developing deals were heard, as top executives close to Charter Communications (CHTR) began reaching out to Time Warner Cable's (TWC) Management to discuss a possible merger of the cable operators, sources told the Wall Street Journal.
Also in M&A, in effort to save their planned merger food-distribution rivals Sysco (SYY) and US Foods will need to convince a federal judge over the next two weeks that their industry is a lot more diverse than antitrust enforcers claim, the Journal wrote.
Separately, Berkshire Hathaway (BRK.A) (BRK.B) held its annual shareholders meeting on Saturday, where chairman and CEO Warren Buffett and Vice chairman Charlie Munger fielded questions about their businesses and the market in general.