Last year, the S&P 500 delivered a net total return of about 21% – its best yearly performance since the launch of the first factor-investing strategies. Annualised volatility was around 7%, and implied volatility dipped regularly below 10%.
Yet the performance of different factor strategies varied widely – both for strategies based on different premia and for specific implementations of strategies based on the same premia. Why?
A look back at the year shows how the answer lies in market