NEW YORK — A rally for Apple led Wall Street higher on Wednesday as U.S. stocks reclaimed more of their sharp losses from last week.

The S&P 500 rose 0.7 percent. The Dow Jones Industrial Average added 81 points, or 0.2 percent, and the Nasdaq composite climbed 1.2 percent.

Apple alone accounted for more than a third of the S&P 500’s gain. It rose 5.1 percent ahead of a White House event where it was expected to announced an increase to its U.S. investments of an additional $100 billion over the next four years.

Trading elsewhere on Wall Street was mixed following a jumble of profit reports. McDonald’s and Shopify rose following their latest updates, while Super Micro Computer tumbled after its earnings and revenue came in below analysts’ expectations. The Walt Disney Co. fell after its earnings beat forecasts but its revenue fell short

Worries are still high that President Donald Trump’s tariffs may be hurting the economy, but hopes for coming cuts to interest rates by the Federal Reserve and a parade of stronger-than-expected profit reports from U.S. companies have helped steady the market.

Companies are under pressure to deliver bigger profits to justify the big gains their stock prices have made since the U.S. market hit a low point in April. The S&P 500 is only a bit below its record, which was set late last month, and the big rally fueled criticism that the broad market has become too expensive.

McDonald’s climbed 3 percent after reporting stronger profit and revenue for the spring than analysts expected. Offerings tied to the “Minecraft” movie proved to be a hit for the restaurant chain.

Shopify jumped 22 percent after the company, which helps businesses sell on the internet, said it made more in revenue last quarter than expected. Analysts also said the company’s forecast for revenue in the current quarter suggests the strong trends are continuing.