Michael Monaghan spent 15 years on Wall Street at Goldman Sachs, the Carlyle Group, Sanford Bernstein, and UBS before leaving to build Beartooth, a technology company that let smartphones connect without cell service. That 12-year entrepreneurial journey — and a visit to the Smithsonian where he and his partner were struck by the iconoclastic nature of America's builders — led him to launch the Founders 100 ETF (ticker: FFF), a fund that owns the 100 best publicly traded companies still run b...