Equity allocation using PE ratio of NSE 50 Index. Equity allocation using a combination of PE ratio and PB ratio of NSE 500 Index . approach with its in-built ‘buy-sell’ discipline helps to negate the behavioral biases caused due to emotions of greed and fear. In short, FIDAAF aims to maximize returns by minimizing risk over the long run. Greed - Intense and selfish desire for something, especially wealth, power, or food (Oxford Dictionary) Einstein said 'there are three great forces in the world: stupidity, fear and greed.' Stupidity (at least in hindsight) leads people into situations where fear and greed are the roots of their downfall. Fear & Greed Index. Know What Emotion is Driving the Market Now. Money.cnn.com Nov 28, 2015. Traders Must Control Fear, Greed. Greed and Fear: Enemies of Stock Trading Discipline. Stockdisciplines.com. Buying Fear, Selling Greed. Buy when the market is selling, sell when it is buying.