It's true that financial firms are in a better position than they've been in a while, both because of Donald Trump's inflationary policies (think infrastructure spending and trade protectionism) and a looming rate hike from the Federal Reserve. Expansion Plan Falls Flat Like BAC, Citigroup's revenue is sliding, which will pressure the bank's dividend if it can't widen margins at its current operations. Visa has done an excellent job, and its massive network, which spans more than 200 countries, gives it what Warren Buffett calls an "economic moat"-an edge that's hard for competitors to match.