portfolio overlaps, largely negating the diversification intent. While it is not possible to eliminate overlaps completely, there are ways and means to reduce their likelihood and reach the diversification goal.
An equity mutual fund scheme invests in a portfolio of stocks in line with regulatory guidelines. So, a large-cap fund will invest at least 80% of its portfolio in stocks ranked 1-100 by market capitalisation, while a mid-cap fund has to put in at least 65% in stocks ranked 101-250 by market capitalisation. Many investors may put money in two or three large-cap funds of different fund houses thinking they are diversifying. However, in reality, a large chunk of your money would be invested in the same set of underlying stocks. For example, all the funds may hold the same large banks, IT companies and diversified conglomerates. This is called portfolio overlap.
One of the reasons for portfolios to overlap is Sebi’s regulatory guidelines, which specify where a particular category of mutual fund scheme — be it large-cap, mid-cap, smallcap and multi-cap funds — can invest. So, a mid-cap fund needs to invest at least 65% in stocks ranked 101-250 by market capitalisation. Since this universe is limited, there are bound to be overlaps between schemes. Wealth managers point out that portfolio overlap can also happen if you have funds from the same fund house. All AMCs have a style, method and philosophy of building portfolios and it is possible that a set of stocks that they buy in a large-cap fund will overlap with those in the flexicap, multi-cap, value or focused schemes of the portfolio.