Nvidia and OpenAI are reworking financing for SB Energy's planned AI data-center campus in Piketon, Ohio, with an earlier proposed Nvidia guarantee of about $250 billion reportedly being reduced to below $120 billion after investor concern over the chipmaker's risk exposure helped send its shares down 5%. Reuters also reported Nvidia is discussing an investment of as much as $3 billion in SB Energy, potentially in two $1.5 billion tranches tied to project signing and a possible IPO that could raise at least $5 billion. Separately, David Sacks said on the "All In Podcast" that the main threat to Nvidia's broader effort to make GPUs financeable assets is a supply glut rather than weak demand, warning of a potential "dark GPU" shock akin to the dot-com era's "dark fiber" bust. The Ohio backstop is meant to support lease, construction and power-related debt rather than chip purchases, while financing for Nvidia chips and accelerators would be handled separately and could reach $350 billion.