He now sits atop a $4.4 billion fortune, more than triple the $1.3 billion he had at the start of Trump’s presidency.
Twitter’s stock has climbed 105%, boosting Dorsey’s stake in the company from $275 million to $610 million. A bigger share of his wealth comes from Dorsey’s other business, payments firm Square.
The Twitter chief executive also serves as CEO of Square, in which he held a bigger, $1 billion stake at the time of Trump’s inauguration. Square shares have surged nearly 370% since then, compared to a 45% increase in the overall stock market. Dorsey’s Square stake is now worth $3.6 billion, enough to compose 80% of the tech tycoon’s fortune.