Sector Update: Tech Stocks Gain Thursday Afternoon

01:45 PM EDT, 09/17/2026 (MT Newswires) -- Tech stocks were higher Thursday afternoon, with the State Street Technology Select Sector SPDR ETF (XLK) rising 2.3% and the State Street SPDR S&P Semiconductor ETF (XSD) adding 4.5%. The Philadelphia Semiconductor index advanced 3.2%. In corporate news, GlobalFoundries (GFS) and Marvell Technology (MRVL) said Thursday they will increase capacity for GlobalFoundries' silicon germanium technology at its facility in Burlington, Vermont, under an expanded multiyear agreement. GlobalFoundries shares jumped past 6%, and Marvell climbed 5.4%. Nebius (NBIS) shares rose 4.9% after the company said it's raising on-demand service rates for some GPU, CPU and memory resources, effective Oct. 1. Generac (GNRC) said Wednesday it has signed a long-term supply agreement with Amazon (AMZN), with initial deliveries of backup power generators for data centers expected to reach $2.4 billion in 2027 and 2028. Amazon shares added 2.1%.