Sun, known for his showy publicity stunts, has spent more than $20 million on the $TRUMP meme coin, making him one of the largest holders of the coin.

In 2023, the US Securities and Exchange Commission (SEC) filed a case against Sun, accusing him of selling unregistered securities through his companies—the Tron Foundation, BitTorrent Foundation, and Rainberry Inc.—and of hiring celebrities to promote his tokens without disclosures.