Does money double every 7 years?

Does money double every 7 years? 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).

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).