P/E (Price to Earning) ratio is a value that quickly denotes the valuation of any stock or equity index. A lower P/E ratio is considered as the market valuation is cheaper, whereas a higher P/E ratio is expensive. Such as an example: If PE of a security is 20 that denotes that the price of that security is currently available with 20 times of premium. NIFTY 50 is a broader index of NSE India that consists top 50 publicly listed stocks of India. So, NIFTY PE ratio denotes the current valuation of that combined 50 listed large-cap stocks.