50 blue-chip stocks that were regarded as profitable long-term investments during the 1960s and 1970s. The practice of buying and holding the nifty 50 is considered to be largely responsible for the bull market of the early 1970s; indeed the prices for the nifty 50 were driven up to very high, unsustainable levels. Most of the nifty 50 had strong growth rates and low P/E ratios. Examples included Anheuser-Busch and American Express. They were also called the Favorite 50.
See nifty fifty.