The Standard & Poor's 500 gained 0.12%, or 1.61 points, to 1,378.53. The Dow Jones Industrial Average surged by 0.50%, or 65.16 points, to 13,029.26. The Nasdaq Composite Index lost 0.24%, or 7.11 points, to 3,000.45.
"The Ifo is a confidence measure, it's a straight correlation with assets. The level of confidence is the most important factor behind markets."