Shares of Warren Buffett's Berkshire Hathaway conglomerate have topped $300,000 for the first time.
Berkshire's Class A stock hit $300,100 Monday morning before retreating to slightly below the milestone.
Buffett has never split Berkshire's A shares, which first topped $1,000 in 1983, although he did create more affordable Class B shares in 1996 that reached $200 a share at Monday's peak.
As a result, Berkshire's Class A shares have long been the most expensive U.S. stock.
When Buffett's investment partnership began buying Berkshire stock in 1962, the New England textile company's shares sold for $7 and $8 apiece in.