Why is Nvidia-backed Nebius stock rising in premarket today?

Nvidia-backed Nebius (NBIS) stock rose over 2% pre-market after announcing a massive 310 MW AI data center in Finland, slated to launch in 2027. This expansion follows a $2 billion Nvidia investment and major deals with Microsoft and Meta. While broader sentiment is bearish, retail traders are accumulating shares, viewing the infrastructure build-out as a strong long-term catalyst.