The case for Berkshire Hathaway (NYSE: BRKA, BRKB) under Greg Abel is simple: a CEO willing to treat artificial intelligence as a genuine growth opportunity could find value that Warren Buffett, in his final years at the helm, could not. The complication is that Buffett's restraint wasn't a flaw in the system. It was the system.
Abel took the top job at the start of 2026. What's changed is the aperture. In a recent CNBC interview, he said he has "always had a strong view that energy would be the constraint" on AI development, pointing specifically to the difficulty of building data centers. That framing cuts across two sectors: companies developing the technology and the energy infrastructure required to run it. Abel's comfort with the subject appears genuine, a contrast to Buffett, who tended to avoid industries he felt he didn't understand. Buffett began a position in Alphabet before stepping down; Abel has since added to it.
The risk is that the logic is wide. Abel has signaled he sees AI-related opportunity across both technology and energy, but Berkshire has not named specific companies or given any scale to the ambition. The firm's discipline, Abel says, remains intact. A CEO finding a sector compelling is not the same as Berkshire deploying capital on terms that actually move the stock. Returns are flat so far this year.
The counterargument to Abel's openness runs deeper than a slow-starting year. Buffett's late-tenure caution was explicit: he acknowledged struggling to find good value. Abel's willingness to engage with AI-adjacent names may reflect genuine conviction, or it may reflect a market in which enthusiasm has compressed the discount required to make a Berkshire-style bet work. The mechanism between a smart macro read on energy constraints and incremental shareholder returns has not yet been demonstrated.
On balance, Abel's energy-constraint framing is the sharpest signal in this picture. It points to a specific investment thesis, not a general embrace of tech. The line to watch is whether Berkshire's next positions actually reflect it.