An equity fund is a mutual fund scheme that invests predominantly in equity stocks.
In the Indian context, as per current SEBI Mutual Fund Regulations, an equity mutual fund scheme must invest at least 65% of the scheme’s assets in equities and equity related instruments.
Equity mutual funds are principally categorized according to company size, the investment style of the holdings in the portfolio and geography.
The size of an equity fund is determined by a market capitalization, while the investment style, reflected in the fund's stock holdings, is also used to categorize equity mutual funds.
Equity funds are also categorized by whether they are domestic (investing in stocks of only Indian companies) or international (investing in stocks of overseas companies). These can be broad market, regional or single-country funds.
Some specialty equity funds target business sectors, such as health care, commodities and real estate and are known as Sectoral Funds.