Profit margins among the Nasdaq 100 have been declining over the past decade. Investors may not be aware of this because, on a reported earnings basis, margins still appear to be expanding. However, this reflects reported depreciation expenses ratherI am a full-time investor and owner of Icon Economics - a macro research company focussed on providing contrarian investment ideas across FX, Equities, and Fixed Income based on Austrian economic theory. Formerly Head of Financial Markets at Fitch Solutions, I h ...