Buffett's company is buying in. Portfolio managers at Berkshire bought a $1 billion stake in Apple, according to a Securities and Exchange Commission filing Monday. The company's new position in Apple totals 9.8 million shares.
Berkshire's vote of confidence should be a good omen for investors worried about China, and searching for Apple's long-term story, according to Gene Munster, managing director and senior research analyst at Piper Jaffray.
"Warren Buffett kind of lays some of those anxieties a little bit to rest," Munster told "Squawk on the Street" on Monday. "He believes it's going to be around for a long time and going to be a worthwhile investment, I think that's the real takeaway."
Well-known investors Carl Icahn and David Tepper have done the opposite, paring stakes in the company. Icahn cited weakness in the Chinese market as the main reason for scaling back.
"You worry a little bit — and maybe more than a little — about China's attitude," Icahn told CNBC's "Power Lunch" after selling shares in late April, later adding that China's government could "come in and make it very difficult for Apple to sell there."
David Einhorn's Greenlight Capital initially joined Tepper in Icahn in scaling back shares of Apple. But according to a regulatory filing submitted Monday, Greenlight raised its stakes to 8.21 million shares from 6.28 million in the previous quarter.