Nvidia included the information in a 13F form filed with the US Securities and Exchange Commission on Wednesday, giving a glimpse at the closely watched company’s investment strategy. It has a history with Arm, which Nvidia attempted to acquire for $40 billion in 2020. That deal ultimately crumbled under regulatory pressure, and Nvidia walked away in February 2022.

The SoundHound investment, meanwhile, was taken as a bullish sign by that company’s investors. Its shares soared as much as 55% in late trading Wednesday after the stake was disclosed. SoundHound makes AI software for audio recognition. Nvidia was cited as a SoundHound investor in 2017. 

The Arm stake was the largest in dollar terms, amounting to $147.3 million. The Recursion holding was valued at $76 million, and the SoundHound stake was $3.67 million. Nvidia also disclosed smaller holdings in medical imaging developer Nano-X Imaging Ltd. and the self-driving company TuSimple Holdings Inc.

Following the failed Nvidia takeover, Arm became the biggest initial public offering of 2023. It remains majority-owned by SoftBank Group Corp., which acquired the chip designer in 2016 for $32 billion. SoftBank has benefited from a dramatic rally in Arm shares this year. The stock is up by more than two-thirds, increasing its market valuation to nearly $130 billion.