Warren Buffett Has Always Said This 1 Thing About Long-Term Investing. History Has Never Once Proved Him Wrong. The large conglomerate Berkshire Hathaway (NYSE: BRKA)(NYSE: BRKB) is widely considered to have one of the greatest stocks of all time, and it's got the numbers to back it…This story appeared on finance.yahoo.com , 2026-08-11 16:35:00.