Taiwan's stock market is the world's fifth-largest, but 40% of it is TSMC. The exchange chair wants to change that before the next earnings miss.

Taiwan overtook India to become the world’s fifth-largest stock market in May, and yet two-fifths of that value comes from TSMC.

Taiwan's stock market is the world's fifth-largest, but 40% of it is TSMC. The exchange chair wants to change that before the next earnings miss.