AsianFin -- Nvidia CEO Jensen Huang has sold a total of 225,000 shares of the company’s stock since June 20, according to a filing with the U.S. Securities and Exchange Commission (SEC). The transactions netted Huang nearly $33.2 million.

The share sales come as Nvidia’s stock continues to surge on the back of investor enthusiasm over artificial intelligence and the company’s dominant position in AI chips. Huang’s stock sales were conducted in accordance with a pre-arranged trading plan, as is common practice among executives.

Nvidia shares have more than tripled over the past year, briefly making the chipmaker the world’s most valuable public company earlier this month.