Warren Buffett made 99% of his wealth after age 52

Warren Buffett's net worth at age 52 was approximately $376 million — a fortune most people would consider extraordinary. Yet by age 92, it had grown to over $100 billion. The difference is not superior stock picking in his later years; it is that compound growth had more time to work. Buffett has been investing since age 11, and the lesson he most often gives young people is simple: start early, don't stop, and don't interrupt compounding unnecessarily by selling.

Source: Housel, The Psychology of Money (2020)