What Is a Bank Loan or Floating-Rate Fund?
Most bond funds are built around a fixed promise: a set coupon paid on a set schedule. A bank loan fund is built around something that moves instead.
The short answer
A bank loan fund, also called a floating-rate fund, holds loans originally made by banks to companies, where the interest rate paid resets periodically based on a reference rate rather than staying fixed for the life of the loan. Because the coupon adjusts along with prevailing rates, these funds behave differently from traditional fixed-rate bond funds, particularly in how sensitive their prices are to changes in interest rates.
How the floating coupon works
Instead of locking in a fixed interest rate at issuance the way a typical corporate bond does, a bank loan’s interest payment is tied to a short-term reference rate plus a set spread, and it resets at regular intervals — often every few months. When the reference rate moves up, the loan’s coupon adjusts upward at the next reset; when it moves down, the coupon adjusts down. This structure shifts the burden of interest rate changes onto the payment amount itself rather than onto the price of the underlying security, which is the opposite of how a fixed-rate bond typically absorbs rate changes.
Typical underlying credit quality
Bank loans held in these funds are generally made to companies with below investment-grade credit profiles, which places them in a similar risk category to bonds held in a high-yield bond fund. However, bank loans are often structured as senior secured debt, meaning they typically sit higher in a company’s repayment priority than unsecured bonds, backed by specific collateral. That structural seniority doesn’t eliminate credit risk, but it changes what a lender might expect to recover if a borrower runs into financial trouble, relative to unsecured debt from the same company.
Interest rate sensitivity versus fixed-rate bond funds
The floating structure is the main reason this category behaves differently from fixed-rate bond funds when interest rates change broadly. A fixed-rate bond fund’s price typically moves inversely with interest rates — duration is the standard measure of just how sensitive a given bond or fund is to those rate moves. A floating-rate fund’s price is comparatively less sensitive to broad rate changes, because the coupon itself adjusts instead of the price needing to move to compensate. That doesn’t make the fund immune to price changes, since credit conditions, liquidity, and the underlying loan market can still move prices independently of interest rates.
What tends to matter most in this category
- Reset frequency. How often the coupon adjusts affects how quickly the fund’s income reflects a change in prevailing rates.
- Credit quality of underlying loans. Because most bank loans are made to lower-rated borrowers, credit risk remains a central factor even with the added structural protection of collateral.
- Liquidity of the underlying loans. Bank loans can trade less frequently than publicly listed bonds, which can affect how a fund is priced and how easily it can be traded.
- Spread over the reference rate. The fixed spread added to the floating reference rate reflects the credit risk being taken on and is a useful figure for comparing similar funds.
The bottom line
A bank loan or floating-rate fund trades the price stability that comes from a fixed coupon for a coupon that adjusts with prevailing rates, layered on top of credit risk broadly similar to other below-investment-grade debt. Whether that tradeoff fits a given purpose depends on how much weight is placed on interest rate sensitivity versus the credit and liquidity characteristics that come with the underlying loans.