Akriti, a young lawyer, sees many people around her investing in equity mutual funds by way of SIP or lump sum. Some directly invest in stocks and others in mutual fund schemes, as recommended by their advisers, while only a few do their own research. She realises that equity shares or mutual funds are typically categorised as large cap, mid cap or small cap. In order to decide which one she should invest in, she would like to understand the basis of such categorisation, how risky the investment ..