Stock Market indices are a popular yardstick for the performance of any stock market around the world. Key benchmark indices not only provide vital information about the quality, depth and strength of the stocks forming part of a particular index, but also give an insight into the strength of any economy in general. That is why a particular stock market index is developed based on the criteria which considers factors such as representation, liquidity, size of the components so as to ensure broad-based and accurate representation of the overall stock market dynamics. For the Pakistan Stock Exchange (AT), KSE-100 has been such index for both local and foreign investors alike. It represents a free-float market capitalization-based selection of the top companies listed on AT.