NexGen Energy is trading 4.16% up at $10.64 today after Jefferies initiated coverage with a 'Buy' rating and a Cdn$21.00 price target, highlighting Rook I as one of the world's largest undeveloped high-grade uranium projects. Investors also absorbed the September 1, 2026 Investor Day outlook for Rook I, which targeted first ore around 2030 and discussed construction progress. The company aims to supply uranium into a structurally undersupplied market, supported by strong demand trends.