The Dow Jones Industrial Average on Friday was set for its first record close of the year, riding a wave of recent market optimism and seeing a brief upward push from someone who hardly needs an introduction: Warren Buffett.

The Dow Jones Industrial Average opened at its highest levels on record on Friday after Warren Buffett’s Berkshire Hathaway disclosed a stake in one of its key stocks. The Dow was up 263 points, or 0.

UnitedHealth shares clocked the largest one-day percent increase since March 2020, as tracked by Dow Jones Market Data Group. It was on pace for the best day in 17 years before giving back some of those gains. For the week, shares rose over 21%, the best week since May 2009. Still, the stock is down more than 50% over the past 12 months.

Dow Jones Industrials at All-Time Highs and Warren Buffett Owns 5 of the Legacy Dividend Giants Paul Morigi / Getty Images Lee Jackson Published: September 11, 2024 10:44 am

Amazon helped offset hot inflation, but breadth was weak. Applied Materials dived late on guidance. UNH rallied on Warren Buffett.

Warren Buffett’s Berkshire Hathaway lost its spot in the trillion-dollar market-cap club after a lackluster [quarterly earnings report](

Warren Buffett proves, once again, why he's the best Provided by Dow Jones May 1, 2025, 7:25:00 PM

The Oracle of Omaha once called this ratio "probably the best single measure of where valuations stand at any given moment."

As Warren Buffett prepares for retirement, we reflect on what we've learned from his 60 years of leadership at Berkshire Hathaway.