The Dow Jones Industrial Average reached a new intraday record high on August 15, 2025, driven by a substantial rally in UnitedHealth Group's stock. UnitedHealth, which was the largest holding in the Dow Jones just four months prior, saw its shares surge by approximately 10%, contributing significantly to the index's upward momentum. The rise in UnitedHealth shares was noted alongside gains in other major stocks, including those associated with Warren Buffett's portfolio, which also experienced sharp increases. This marked the first intraday record for the Dow Jones in 2025, reflecting renewed investor confidence and positive market sentiment.