This time we give you an insight into something that most debt fund investors would be unaware of, the Average Portfolio Maturity. As we all know, debt funds invest in bonds and securities. These instruments mature over a certain period of time, which is called maturity. The maturity is the length of time till the principal amount is returned to the security-holder or bond-holder. A debt fund invests in a number of such instruments and each of these instruments would be having different maturity times. Hence, the fund calculates a weighted average maturity, which would give a fair idea of the fund's maturity period. For example, if a fund owns three bonds of 2-year (Rs 30,000), 3-year (Rs 10,000) and 5-year (Rs 20,000) maturities, its weighted average maturity would be 3.17 years. What is the big deal about average maturity then, you may ask. Well, knowing a fund's average maturity is important because it tells you how sensitive a fund is to the change in interest rates. It is ...