Definition
It multiplies the free-float share count by the market price, and is the basis for weighting the KSE-100 and KMI indices. A company can have a large total market cap but a small free-float market cap if founders or government hold most shares.
Worked example
If a company has 1 billion shares at Rs. 100 but only 25% free float, its free-float market cap is Rs. 25 billion, not Rs. 100 billion.