what is Value Investing ?

It generally involves buying securities whose shares   appear underpriced by some form(s) of fundamental analisys  As examples, such securities may be stock in public companies that trade at discounts to book value  or Tangibile value , have high dividend yields, have low price-to earnings  ratio  or have low price to book ratios.
High-profile proponents of value investing,  including  Berkshire Hathaway  chairman Warren Buffet have argued that the essence of value investing is buying stocks at less than their intrinsic  value .The discount of the market price to the intrinsic value is what Benjamin Graham called the “Margin of Safety". The intrinsic value is the discounted value of all future distributions.