Lol...like the 300 billion USD figure quoted by the Z.Khan.
The integration of the three exchanges is an essential step in that direction. With three separate stock markets, and with one of these dominant, the search for a private investor was complicated because it was hard to find an interested party for the Lahore and Islamabad exchanges, given their tiny size, and any private investor was wary of acquiring ownership of one exchange in Karachi while the other two remained in government hands.
https://www.dawn.com/news/1232383