Adjustable-rate mortgage (ARM)

Definition

A mortgage that features predetermined adjustments of the loan interest rate at regular intervals based on an established index. The interest rate is adjusted at each interval to a rate equivalent to the index value plus a predetermined spread, or margin, over the index, usually subject to per-interval and to life-of-loan interest rate and/or payment rate caps.

Investing Essentials

Copyright © 2011 Campbell R. Harvey, Professor of Finance, Fuqua School of Business at Duke University


Term of the Day

Statement of Additional Information (SAI)
A document provided as a supplement to a mutual fund prospectus. It provides more detailed information about fund policies, operations, and risks. Also known as a Part B prospectus.

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