Plumbers. This is what we have been trying to do this week, as I decided to conduct some research on the financial services toll booth companies, which, of late, have been clearly left behind by the market, if not severelyI’m a long-term investor focused on U.S. and European equities, with a dual emphasis on undervalued growth stocks and high-quality dividend growers. Through years of experience, I’ve learned that sustained profitability—evident in strong margins, stable and expanding free cash flow, and hi ...