Al Gore's position in Visa is currently worth $482M. That's 2.96% of their equity portfolio (14th largest holding). The first Visa trade was made in Q3 2017. Since then Al Gore bought shares three more times and sold shares on eight occasions. The stake costed the investor $419M, netting the investor a gain of 15% so far.
Generation Investment Management bought Microsoft, Shopify, and Mastercard stock, and sold Visa in the second quarter.