Worthington Steel, Immunitybio, Riot Platforms, Micron Technology And Other Big Stocks Moving Higher On Friday - Ambarella (NASDAQ:AMBA), AST SpaceMobile (NASDAQ:ASTS)

Group 1 - U.S. stocks showed mixed performance, with the Nasdaq Composite gaining approximately 100 points on Friday [1] - Worthington Steel Inc shares increased by 6.9% to $41.43 after announcing a Business Combination Agreement with Kloeckner & Co, planning a voluntary public offer at 11 euros per share ($12.8) [1][2] - Other notable stock gains included Kopin Corp, which rose 17.1% to $3.46, and Immunitybio Inc, which gained 17% to $4.62 due to exceeding enrollment expectations for its clinical study [3] Group 2 - Riot Platforms Inc shares increased by 11.2% to $18.42 after acquiring 200 acres of land and signing a Data Center Lease and Services Agreement with Advanced Micro Devices [3] - Micron Technology Inc shares rose by 7.9% to $363.35 following a purchase of 23,200 shares by Director Teyin Liu at an average price of $337.14 per share [3] - Maxlinear Inc shares gained 6.2% to $20.38, with Benchmark analyst David Williams maintaining a Buy rating and raising the price target from $25 to $28 [3]