Equity funds are considered to be the more risky funds as compared to other fund types, but they also provide higher returns than other funds. It is advisable that an investor looking to invest in an equity fund should invest for long term i.e. for 3 years or more. There are different types of equity funds each falling into different risk bracket. In the order of decreasing risk level, there are following types of equity funds:

Aggressive Growth Funds: In Aggressive Growth Funds, fund manager aspire for maximum capital appreciation and invest in less researched shares of speculative nature. Because of these speculative investments Aggressive Growth Funds become more volatile and thus, are prone to higher risk than other equity funds.

Growth Funds - Growth Funds also invest for capital appreciation (with time horizon of 3 to 5 years) but they are different from Aggressive Growth Funds in the sense that they invest in companies that are expected to outperform the market in the future. Without entirely adopting speculative strategies, Growth Funds invest in those companies that are expected to post above average earnings in the future.

Speciality Funds: Speciality funds have stated criteria for investment and their portfolio comprises of only those companies that meet their criteria. Criteria for some speciality funds could be to invest/not to invest in particular regions/companies. Speciality funds are concentrated and thus, are comparatively riskier than diversified funds. These are following types of speciality funds:

a) Sector Funds: Equity funds that invest in a particular sector/industry of the market are known as Sector Funds. The exposure of these funds is limited to a particular sector (say Information Technology, Auto, Banking, Pharmaceuticals or Fast Moving Consumer Goods) which is why they are more risky than equity funds that invest in multiple sectors.

b) Foreign Securities Funds: Foreign Securities Equity Funds have the option to invest in one or more foreign companies. Foreign securities funds achieve international diversification and hence they are less risky than sector funds. However, foreign securities funds are exposed to foreign exchange rate risk and country risk.

c) Mid-Cap or Small-Cap Funds: Funds that invest in companies having lower market capitalization than large capitalization companies are called Mid-Cap or Small-Cap Funds. Market capitalization of Mid-Cap companies is less than that of big, blue chip companies (less than Rs. 2500 crores but more than Rs. 500 crores) and Small-Cap companies have market capitalization of less than Rs. 500 crores. Market Capitalization of a company can be calculated by multiplying the market price of the companys share by the total number of its outstanding shares in the market. The shares of Mid-Cap or Small-Cap Companies are not as liquid as of Large-Cap Companies which gives rise to volatility in share prices of these companies and consequently, investment gets risky.

 Diversified Equity Funds - Except for a small portion of investment in liquid money market, diversified equity funds invest mainly in equities without any concentration on a particular sector(s). These funds are well diversified and reduce sector-specific or company-specific risk. However, like all other funds diversified equity funds too are exposed to equity market risk. One prominent type of diversified equity fund in India is Equity Linked Savings Schemes (ELSS). As per the mandate, a minimum of 90% of investments by ELSS should be in equities at all times. ELSS investors are eligible to claim deduction from taxable income (up to Rs 1 lakh) at the time of filing the income tax return. ELSS usually has a lock-in period and in case of any redemption by the investor before the expiry of the lock-in period makes him liable to pay income tax on such income(s) for which he may have received any tax exemption(s) in the past.
  
Equity Index Funds - Equity Index Funds have the objective to match the performance of a specific stock market index. The portfolio of these funds comprises of the same companies that form the index and is constituted in the same proportion as the index. Equity index funds that follow broad indices (like S&P CNX Nifty, Sensex) are less risky than equity index funds that follow narrow sectoral indices (like BSEBANKEX or CNX Bank Index etc). Narrow indices are less diversified and therefore, are more risky.
  
Value Funds - Value Funds invest in those companies that have sound fundamentals and whose share prices are currently under-valued. The portfolio of these funds comprises of shares that are trading at a low Price to Earning Ratio (Market Price per Share / Earning per Share) and a low Market to Book Value (Fundamental Value) Ratio. Value Funds may select companies from diversified sectors and are exposed to lower risk level as compared to growth funds or speciality funds. Value stocks are generally from cyclical industries (such as cement, steel, sugar etc.), which make them volatile in the short-term. Therefore, it is advisable to invest in Value funds with a long-term time horizon as risk in the long term, to a large extent, is reduced.
  
Equity Income and Debt Yield Funds: The objective of Equity Income or Dividend Yield Equity Funds is to generate high recurring income and steady capital appreciation for investors by investing in those companies which issue high dividends (such as Power or Utility companies whose share prices fluctuate comparatively lesser than other companies share prices). Equity Income or Dividend Yield Equity Funds are generally exposed to the lowest risk level as compared to other equity funds.