The filing comes not long after SoftBank Group Corp. announced a similar move to sell off its shares in Nvidia in October for $5.83 billion. Thiel has been less bullish on artificial intelligence development than SoftBank founder Masayoshi Son, but both men opted to exit their holdings in the world’s most valuable company at a time of rising concern about an AI investment bubble. Nvidia’s shares are up just roughly 2% since the end of September.