This is CNBC's Morning Squawk newsletter. Subscribe here to receive future editions in your inbox.Happy Friday and happy 2026! I began my year at the movie theater watching an Amanda Seyfried-led movie-musical ("The Testament of Ann Lee," not "Mamma Mia!").Stock futures are up this morning. The market is on a four-day losing streak.Here are five key things investors need to know to start the trading day:1. Boom or bust?Traders wear "2026" glasses as they work on the floor of the New York Stock Exchange (NYS ...