Nebius AI stock was spun off from "the Google of Russia," Yandex. This AI infrastructure stock is now rallying from reports of a recent investment by none other than NVIDIA. Why is NVIDIA investing in this little-known data center stock? Well, they're buying up loads of NVIDIA products for starters. Also, they expect their innovative self-owned data center in Finland to help them generate exponential growth in 2025. Is this stock set to deliver explosive returns? Or are their goals too lofty?