Igh return stocks, low return stocks, and

Historically high return stocks have exhibited lower risk than low return stocksa¦.just the opposite what the SML (Security Market Line) predicts. Wall Street ( and unsuspecting financial planners) has been very successful in selling main street the story that higher risk higher reward, while the smart money knows this and is able to effectively arbitrage excess returns from low risk stocks? To what extent does this make sense? Discuss and elaborate your response.