Modest gains for stocks nudged the S&P 500 and the Nasdaq to more record highs on Wall Street as investors braced for a deluge of earnings reports from big US companies. Of the 500 members of the S&P 500 index, 181 will report their results this week. Apple, Microsoft, McDonald’s, and Caterpillar are among the big-name companies that will be telling investors how they did in the first three months of the year. Ten of the 30 members of the Dow will also release their results.. The S&P 500 rose 7.45 points, or 0.2%, to 4,187.62. The Dow Jones Industrial Average fell 61.92 points, or 0.2%, to 33,981.57. The Nasdaq rose 121.97 points, or 0.9%, to 14,138.78. The Russell 2000 index of smaller companies rose 26.15 points, or 1.2% to 2,298.01