U.S. stocks opened mixed on Tuesday as investors digested a batch of earnings reports.

Shortly after the opening bell, the Dow Jones Industrial Average added 15.98 points, or 0.07 percent, to 22,972.94. The S&P 500 lost 0.52 points, or 0.02 percent, to 2,557.12. The Nasdaq Composite Index was down 3.37 points, or 0.05 percent, to 6,620.64.

Johnson & Johnson reported better-than-expected quarterly results, driven by its pharmaceutical business and its recent acquisition of Swiss biotech Actelion. The company's stock rose more than 1 percent in early trading.

U.S. online streaming giant Netflix also posted better-than-expected earnings and revenue, boosted by stronger-than-expected subscriber growth. Shares of the company retreated 1.7 percent shortly after the opening bell after rising nearly 2 percent in premarket trading.

Shares of Morgan Stanley increased 1.86 percent as the company's wealth management business posted strong quarterly results.

Meanwhile, traders were digesting the latest comments from the Federal Reserve Chair Janet Yellen.

Yellen said on Sunday in an international banking seminar that "economic activity in the United States has been growing moderately so far this year, and the labor market has continued to strengthen."

Her remarks suggested that the central bank will soon resume raising interest rates to reflect the strengthening economy, according to CNBC.