As 2025 wraps, we break down the year's top market drivers. Biotech deals dominated the sector, will the M&A momentum continue in 2026? Plus, it's the end of an era for Berkshire Hathaway as Warren Buffett steps down.

Tesla Loses its Crown, Tariff Tailwinds & Dow Dogs 1/2/25

"The Exchange" on CNBC is a one-stop shop for the day's top business stories, along with breaking news and the must-see market movers heading into the back half of the trading day. This newsroom-based program also features lots of original reporting, in-depth conversations and showcases CNBC's award-winning investigative work.