Validity of Capital Asset Pricing Model in Pakistan: Evidence from Karachi Stock Exchange

This study investigates the validity of capital asset pricing (CAP) model in Karachi Stock Exchange (KSE). The data used in this study were collected from 387 companies of 30 different sectors on monthly, quarterly and semi-annual basis. The Paired sample t- test is applied to find the difference between actual and expected returns. Results show that capital asset pricing model (CAPM) predict more accurately the expected return on a short term investment as compare to long term investment. It is recommended that the investors should more focus on CAPM results for short term as compare to long term investments in KSE.