how do fear and greed affect the decisions of investors 
many investors are emotional and reactionary with fear and greed being the two predominant emotions affecting investors the bottom lineinvestor sentiment is often characterized by two emotions fear and greed the cnn business fear greed index quantifies this facet of market psychology on a scale of 0 as the most fearful to 100 as the most greedy the company alternative me created a crypto specific index that follows sentiment for bitcoin and major cryptocurrencies 