Stewart Horejsi began buying Berkshire Hathaway Class A shares in 1980 while running Brown Welding Supply in Salina, Kansas. His three initial purchases totaled $94,300, funded by profits from the family welding business, and he continued buying for years. His holdings peaked at 5,800 shares before he reduced them to 4,300 by 1998, a position that has remained unchanged. Forbes valued his net worth at $3 billion in October 2023, including a $2.2 billion Berkshire stake. Berkshire Class A traded at $757,884.54 on September 22, 2026, while the stock had gained 83.92% over five years and 248.05% over 10 years. The outcome illustrates the exceptional risks and rewards of a concentrated, multidecade investment.