Interesting chart from the Economist based on a recent Crédit Suisse report…
How did they come up with these numbers? “…current bond yields to indicate future bond returns. It then adds our estimated equity risk premium (relative to bills) of around 3½% on a geometric mean basis to provide a projection of equity returns” (pg. 27).
I’m not sure I buy into their (or anyone’s) attempt to predict the future, but the case for future real returns over the next decades being weaker than those of the past few decades is certainly quite strong.