[Stu from NYC]

Originally Posted by manaboutown

"According to Standard and Poor's, the average annualized return of the S&P index, which later became the S&P 500, from 1926 to 2020 was 10%.  At 10%, you could double your initial investment every seven years (72 divided by 10)."

From: How To Double Your Money Every 6 Years

There have been some periods where this did not happen but long term it can be done.