According to CNBC, Generac soared 33% in premarket trading after striking a deal with Amazon to supply backup power generators for its data centers. Initial deliveries are expected to total $2.4 billion between 2027 and 2028, and Generac also granted Amazon the right to buy up to $340 million worth of its stock. Amazon's stock moved 1.3% higher. Lennar fell 1.2% after the homebuilder reported disappointing third-quarter results. Earnings were $1.19 per share, short of the $1.28 expected from analysts polled by FactSet and nearly half of what it posted a year earlier, while revenue came in at $8.05 billion versus the $8.23 billion consensus estimate. Fluence Energy tumbled 22% after the battery storage maker cut its full-year guidance, now expecting $2.4 billion in revenue for 2026, down from its prior guidance of $2.9 billion to $3.1 billion. Fluence also anticipates a loss of $200 million before interest, taxes, depreciation and amortization, wider than its previous range of a $30 million loss to $10 million EBITDA. Nike gained 1.5% after announcing the appointment of Alexandre Arnault, Deputy CEO of LVMH's Moet Hennessy, to its board. Arm Holdings rose roughly 4% after CEO Rene Haas told CNBC's Jim Cramer he is increasingly confident the company can meet demand for its new data center chip.