According to the source, WhiteFiber signed a 10-year colocation agreement with Nscale valued at about 865 million dollars, and the source reports the shares rose roughly 15 percent in after-hours trading following the news. Source: user-provided X post dated Dec 18, 2025. Trading implications: elevated volatility into the next session is consistent with a double-digit after-hours gap; traders can monitor premarket liquidity and opening-range confirmation for follow-through and watch for spillover flows in data center and digital infrastructure equities. Analysis based on the same source. No direct crypto market impact on BTC or ETH was stated in the source.