ASYMMETRY® Observations are Mike Shellâs observations of investor behavior causing directional price trends, global macro, tactical ETF trading, momentum stock trading, hedging, volatility trading, and risk management that creates asymmetric investment returns. An asymmetric return profile is a risk/reward profile with a positive asymmetry between profit and loss. Mike Shell is the founder of Shell Capital Management, LLC and the portfolio manager of ASYMMETRY® Global Tactical