Prem Watsa's position in Taiwan Semiconductor Manufacturing - ADR is currently worth $12.5 Million. That's 0.79% of their equity portfolio (15th largest holding). The first Taiwan Semiconductor Manufacturing - ADR trade was made in Q3 2017. Since then Prem Watsa bought shares three more times and sold shares on two occasions. The stake costed the investor $4.43 Million, netting the investor a gain of 181% so far.