Skip to navigationSkip to main contentSkip to right columnJeannine ManciniFri, July 3, 2026 at 10:01 PM GMT+2 7 min readBenzinga and Yahoo Finance LLC may earn commission or revenue on some items through the links below.Elon Musk spends his days building rockets, brain implants and artificial intelligence. Yet one of his most enthusiastic endorsements went to something that has been sitting in grocery store refrigerators for decades.Diet Coke."I would just like to thank the genius who came up with Diet Coke," the Tesla and SpaceX CEO wrote on X in 2023. "Best drink ever.""Coke Zero is a way better name, but I like the taste of Diet Coke slightly more."For a man known for chasing the next breakthrough, it was a reminder that sometimes an old favorite still wins.Don't Miss:Everyone Is Talking About AI. Few Are Talking About The Infrastructure It Needs To Function.1.5M+ People Work in Headsets Every Week— Here's the Company Behind ItA Billionaire With a Favorite CanMusk's affection for Diet Coke has become something of a running joke.In another exchange about Coca-Cola, he wrote, "Diet Coke & Coke Zero are awesome. I don't care if drinking gallons of it shaves a bit of life off. Worth it."He has also shared photos of empty Diet Coke cans on his bedside table, joking, "I have a drinking problem."While Coca-Cola has spent years promoting Coke Zero Sugar as its flagship zero-calorie cola, Musk has consistently landed on the side of Diet Coke, even while admitting the newer product has the stronger name.Buffett Drinks It. Musk Builds the Future.Musk is hardly the only billionaire with a Coca-Cola habit.Microsoft co-founder Bill Gates has said he drank several Diet Cokes a day. President Donald Trump has long been associated with Diet Coke, including reports that he kept a button in the Oval Office that summoned the drink.Trending: Deloitte's #1 Fastest-Growing Software Company Lets Users Earn Money Just by Scrolling — Investors Can Still Get In at $0.52/ShareThen there is Berkshire Hathaway Chair Warren Buffett.Unlike Musk, Buffett prefers regular Coca-Cola and turned that preference into one of the most successful investments of his career. Berkshire Hathaway began buying shares in the late 1980s and now owns 400 million shares of Coca-Cola, a stake worth tens of billions of dollars that generates hundreds of millions of dollars in annual dividend income.It is a fitting contrast.Buffett became one of history's greatest investors by buying durable businesses with predictable cash flows and holding them for decades. Musk built his fortune by betting on industries many investors once considered too risky or too early, including electric vehicles, reusable rockets, artificial intelligence and brain-computer interfaces.Terms and Privacy PolicyEU DSA contactPrivacy & Cookie SettingsMore Info