TikTok influencers accurately predicted the rise in AI stocks in the first half of 2024. They were correct in over 64% of their stock picks, with about 36% of the recommendations resulting in losses. The most profitable pick would have been Nvidia, returning over 60% on a thousand-dollar investment. Experts warn not to take advice wholesale from influencers due to potential biases and lack of credentials and regulation. They may promote stocks for payment or engage in front-running by recommending shares they own to inflate prices before selling.