Nucor Corp is trading 4.2% up at $263.08 in pre-market, rebounding from recent weakness and outperforming its prior close of $252.60. - The steelmaker raised its second-quarter 2026 diluted earnings guidance to $4.70-$4.80 per share, exceeding the consensus estimate of $4.30. - The company expects increased earnings across all three operating segments, with the largest rise in steel mills due to higher average selling prices and stable volumes, along with $130 million in cash refunds. - This positive company-specific news follows broader market strength, with U.S. equity futures also climbing today.