"The iShares Floating Rate Note Fund seeks investment results that correspond generally to the price and yield performance, before fees and expenses, of the Barclays Capital US Floating Rate Note < 5 Years Index. The coupon rates for floating rate notes are an aggregate of the ""Reference Rate"" (typically 1 month, 3 month or 6 month LIBOR)1 plus a fixed coupon spread which is based on the market's perception of the issuer's credit risk at the time of issuance. The coupons are fixed until predetermined reset dates when they will be adjusted in accordance with changes in the Reference Rate. "
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