This article explains the difference between CML and SML in Capital Asset Pricing Model (CAPM) and how they help investors assess their optimal portfolio. It also discusses the concept of minimum variance portfolio and the relevance of the equation of CAPM. The article includes a graphical representation of CML and SML, along with equations and formulas. The subject is finance and the course code is FIN200. The article is relevant for students studying finance in any college or university.