SoundHound's partnership with Stellantis is expanding into new regions.SoundHound AI (SOUN -9.19%) has been popular with those looking for pure-play artificial intelligence (AI) investments. Because many of the most innovative AI companies are either private businesses or inside a division of a big tech company, pure-play investments are few and far between.SoundHound AI's popularity has been evident this year, as the stock has risen nearly 200% in 2024. But a large chunk of that came within the past week a ...