Charlie Munger wished he backed Amazon and bet bigger on Apple — and said taking risks like Elon Musk would drive him nuts

• Charlie Munger bemoaned not investing in Amazon early, and wished he bet bigger on Apple.

• Warren Buffett's late sidekick, who passed on Tesla, said Elon Musk is talented but takes big risks.

• If Buffett and Munger invested $50 billion in Apple, they would have a $280 billion stake today.

The late Charlie Munger regretted not backing Amazon or buying more Apple stock, and viewed Elon Musk as exceptional but too risk-loving for his liking.

Warren Buffett's longtime business partner and Berkshire Hathaway's vice chairman, who died aged 99 last week, voiced those comments in a September interview with The Wall Street Journal's Gregory Zuckerman.

Zuckerman, author of books about elite investors including John Paulson and Jim Simons, shared some highlights from their conversation in a recent article.

Munger said he was a fan of Amazon's founder, Jeff Bezos, but failed to invest in the e-commerce titan early on. That's not surprising given he prized predictability, profitability, and a good price, none of which Amazon offered for a long time. Buffett has even joked that if Bezos stopped in his hometown of Omaha on his way from New York to Seattle to start Amazon, he would have said, "Good luck, Jeff."