U.S. stocks ended higher on Tuesday, the first trading day of the month, as the Dow Jones Industrial Average climbed toward a fresh record and approached another milestone.

The Dow Jones Industrial Average was up 72.80 points, or 0.33 percent, to 21,963.92. The S&P 500 rose 6.05 points, or 0.24 percent, to 2,476.35. The Nasdaq Composite Index gained 14.81 points, or 0.23 percent, to 6,362.94.

This earning season has been robust so far and has been broadly supportive of stocks markets recently.

Latest data from Thomson Reuters showed that the S&P 500 companies' blended earnings in the second quarter of 2017 are expected to rise 10.9 percent year on year, while the revenues are forecast to increase 4.9 percent.

Dow notched record high these two sessions amid upbeat earnings, but some analysts said the tech sector might continue to face pressure from profit-taking.

Tech giant Apple is set to report quarterly earnings later Tuesday.

On the economic front, U.S. personal income decreased less than 0.1 percent in June, below an expected 0.3 percent increase, according to the Commerce Department Tuesday.

In June, personal consumption expenditures (PCE) increased 8.1 billion dollars, or 0.1 percent.

U.S. manufacturing activity cooled in July, while businesses remained optimistic about their business conditions.

The manufacturing index, also known as the purchasing managers index (PMI), registered 56.3 in July, down from June's reading of 57.8, said the Institute for Supply Management (ISM).