Rule-based investing is gaining traction in recent times and a lot of mutual fund houses have started incorporating the multi-disciplinary rule-based approach in their schemes. Ashutosh Bhargava, Fund manager and head-equity research, Nippon India Mutual Fund, said that relying on just one aspect of valuations and macro forecasting have their challenges and hence a rule-based approach taking into account momentum, valuation, volatility etc can be a much better approach to generate alpha. He said ..