Berkshire Hathaway gains ground, but still trails the S&P 500 as '26 enters second half

Berkshire Hathaway has underperformed compared to the S&P 500 in the first half of 2026, despite a strong performance in June. The article also notes the presence of Berkshire executives at the Allen & Co. conference and Warren Buffett's concerns regarding AI-generated scams.
Why it matters
Berkshire Hathaway's market performance is a key indicator for global investors, and Buffett's warnings on AI highlight growing concerns regarding digital security.
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With 2026 a bit more than half over, Berkshire Hathaway's B shares are down 1.8% year-to-date and 12.4 percentage points behind the S&P 500's 10.7% gain. (Including dividends, the S&P is up 11.4% giving it a 13.1 percentage point lead).
A strong June for Berkshire erased almost a third of its 17.5 percentage point deficit as of June 1, its biggest losing margin of the year so far.
Even with that June bump, however, it's been a tough Q2 (+ 10 days) for Berkshire with a gain of a bit more than 3% versus the benchmark's strong tech-driven 16% advance, totally erasing what was a slim 1.8 percentage point Berkshire lead at the end of March.
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