U.S. stock futures rise on Anthropic IPO buzz; Fed meeting and earnings ahead

U.S. stock futures rose slightly Monday evening, driven by tech gains after Anthropic filed for an IPO, while investors awaited major earnings and a Federal Reserve meeting. S&P 500 futures edged up 0.05%, Nasdaq 100 futures rose 0.21%, and Dow futures fell 0.03%. Anthropic's filing highlighted steep costs, with a first-half 2026 net loss of about $80.7 billion on revenue of $16.3 billion, and a reported valuation near $1.5 trillion. Alphabet and Microsoft report Wednesday, followed by Amazon Thursday, with Boeing and Seagate due Tuesday. The Fed begins a two-day meeting Tuesday, with rates widely expected to stay unchanged after September's 25 basis point hike. Third-quarter GDP and PCE inflation data are due Thursday.