Savor the time you have with the companies in the S&P 500, because in 10 years, half of them will be replaced.
The length of time large-cap stocks have spent in the benchmark index has been declining, from 33 years on average in 1985, to 20 years as of 1990. And their window is forecast to get even smaller in the future, shrinking to 14 years by 2026, CLSA wrote in a client note, citing data from Innosight.
