Iconic investor Warren Buffett spoke with CNBC's Becky Quick in an interview ahead of Berkshire Hathaway's annual shareholder meeting.

The Berkshire CEO spoke about a massive new investment in Apple, the U.S. economy, and his outlook on companies such as IBM and General Electric.

Buffett revealed that Berkshire bought a staggering 75 million Apple shares in the first quarter, pushing the stock up more than 2 percent in early trading on Friday.

"It is an unbelievable company," Buffett said. "If you look at Apple, I think it earns almost twice as much as the second most profitable company in the United States."

The "Oracle of Omaha" also said he isn't interested in buying General Electric — either the stock or the entire company.

Warren Buffett tweet