The Dow Jones Industrial Average hit a new intraday high before closing nearly flat on Friday, reaching 45,203.52 points. Warren Buffett’s Berkshire Hathaway disclosed a stake in UnitedHealth Group, causing its stock to surge almost 12% and contribute over 167 points to the Dow. The Dow is a price-weighted index, unlike the S&P 500, which is market-cap weighted, causing it to move differently from other major indexes. U.S. stocks ended mostly lower on Friday, with the S&P 500 down 0.3% and the Nasdaq 0.4% lower. Investors are anticipating updates on interest rates from Fed Chair Jerome Powell at the Jackson Hole symposium.

Read more at Yahoo Finance: Dow ends just shy of record after touching new intraday high, as Buffett gives Wall Street a boost