I am trying to wrap my head around this…..maybe schweser is confusing me………..if the expected return is greater than the required return then the security is undervalued……..and if the required return is greater than the expected return the security is over-valued……….the SML essentially graphs the results of CAPM and therefore I would assume represents the required return? So by this logic if the SML line represents the required return and is below the expected return then it is under-valued….correct? So essentially where do we get the expected return from since CAPM gives us the required return and also why areas they used expected return and required interchangeably when talking about CAPM………….MAGICIAN 2000 would easily destroy this question!!!