Adjustable rate preferred stock

Adjustable rate preferred stock is a type of preferred stock that pays out a dividend that is modified by changes in a benchmark rate, typically on a quarterly basis. A common benchmark is the rate associated with Treasury bills.

The calculation of the dividend and the linked benchmark rate is set when the shares are issued. The allowable dividend typically has a rate cap, to prevent the issuer from having to pay inordinately large dividends.

The market value of adjustable rate preferred stock tends to be quite stable, since the built-in rate adjustments insulate the stock value from changes in interest rates.