# A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Average Effective Maturity

Average effective maturity is a weighted average of all the maturities of the bonds in a portfolio, computed by weighting each bond’s effective maturity by the market value of the security.

Average effective maturity takes into consideration all mortgage prepayments, puts, and adjustable coupons. (Because Morningstar uses fund company calculations for this figure and because different companies use varying interest-rate assumptions in determining call likelihood and timing, we ask that companies not adjust for call provisions.)

Longer-maturity funds are generally considered more interest-rate sensitive than their shorter counterparts.

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