Buffett has added a whopping $157.2 billion to this investment holding since the start of 2024.Warren Buffett is one of the most successful investors of all time. He boasts a track record dating back nearly 70 years in which he has produced eye-popping returns for those willing to stick with him over the long run. If you'd bought shares of Berkshire Hathaway (BRK.A 0.70%) (BRK.B 0.95%) in 1965, when Buffett took control of the company, you'd have earned a cumulative return of 4,384,748% through the end of l ...