DeMiguel, Victor; Martin-Utrera, Alberto; Uppal, Raman - 2022
A fundamental insight in finance is that there is a strong risk-return tradeoff. Moreira and Muir (2017) challenge this … by showing that investors can increase Sharpe ratios by reducing exposure to risk factors when their volatility is high … both low- and high-sentiment periods. Our results demonstrate that the breakdown of the risk-return tradeoff is even more …