Nvidia invested in SoundHound AI last year, but its stock is currently soaring for a different reason. SoundHound AI (SOUN -8.02%) develops conversational artificial intelligence (AI) technologies. It has a market capitalization of just $1.7 billion, but it burst onto investors' radars when semiconductor giant, Nvidia, revealed it bought a small stake in the company. Nvidia owns 1.7 million shares of SoundHound which were worth around $3 million at the time of purchase in late 2023. However, the value of th ...