
Group 1 - Nvidia's multi-billion dollar investment in OpenAI has increased visibility for AI-based companies, benefiting BigBear.ai Holdings and SoundHound AI Inc, while Serve Robotics is experiencing a decline [1] - BigBear.ai Holdings (BBAI) has seen its stock rise 11.7% to $7.90, reaching a three-month high of $8.48, and has surged 55.8% in September, with a year-over-year increase of 407.4% [2] - SoundHound AI Inc (SOUN) is also performing well, with a 3.2% increase to $17.87, marking its seventh consecutive daily gain and a 265% increase over the past year [3] Group 2 - Serve Robotics (SERV) is down 4.4% to $13.14, entering negative territory for 2025, although it has seen gains over the past year and benefits from positive movements in rival companies [4] - Short interest has increased for BBAI (6.9%), SERV (9.2%), and SOUN (2.5%), with current short interest representing 19.9% of BBAI's float, 24.1% of SERV's, and 32.5% of SOUN's [4]