Warren Buffett’s $11 billion oil bet is down 21% from 2025 peak. Will this be his oil regret 2.0?

One of Warren Buffett’s largest public equity investments is now deep in the red. Occidental Petroleum, in which Berkshire Hathaway holds a 28.2% stake, has seen its shares slump 21% from their 2025 peak of $53.20, closing at $42.16 on Friday.

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