Lithium and steel outshined A.I. in 2025, at least when it comes to CNBC's exclusive Power City Indexes.The Power City Indexes (PCI) were built ten years ago. The 'indexes' are made up from the 11 or 12 largest market cap companies in 36 different city and metro areas around America.  The stocks are equally weighted in each index and tracked through the year on FactSet.The PCIs are an easy and exclusive way to find out which city or metro area is "winning" the stock market.   We highlight them through the y ...