Average Effective Maturity Definition & Meaning | Financial Term | CSIMarket
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Average Effective Maturity

Financial Term

Average Effective Maturity (AEM) is a financial term that refers to the average length of time for which a portfolio of bonds will mature, weighted according to the amount of money invested in each bond. It is an effective measure of the bond portfolio*s sensitivity to interest rate changes, as longer maturities usually translate to greater price fluctuations when interest rates change.

AEM is calculated using a formula that multiplies the number of years to maturity for each bond by the percentage of the total investment represented by that bond, and then sums the results across all bonds in the portfolio. The resulting number is then divided by the total investment in the portfolio.

AEM is widely used in the financial industry to help investors and portfolio managers compare bond portfolios and assess the risks associated with different investments. The higher the AEM, the greater the potential volatility of the portfolio in response to interest rate movements. Conversely, a lower AEM indicates a portfolio with shorter-term bonds that may offer lower overall returns but potentially lower risk as well.

Overall, AEM offers a simplistic but effective way to assess the risk of a bond portfolio, making it an essential tool for many fixed income investors and managers.


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