GLOSSARY DEEP DIVE

Bank Loan Fund: Higher Yield, Borrowed Against Credit Risk

When interest rates rise, ordinary fixed-rate bond funds lose value because their existing coupons look less attractive next to newly issued, higher-paying debt. A bank loan fund is often marketed as the fix, since its income floats upward with rates. What the pitch tends to underweight is who is actually borrowing the money, and what happens to them in a recession.

Deep dive9 min readUpdated 2026
In this article

The core principle

A bank loan fund, also called a senior loan fund or leveraged loan fund, is a pooled fund holding loans that banks and other lenders originally made to companies with below investment grade credit ratings, the same tier of borrower that also issues high-yield (junk) bonds. These loans are typically "senior" in the capital structure, meaning they sit ahead of most other company debt in the queue for repayment if the borrower defaults, and "secured," meaning they are backed by specific company assets pledged as collateral, both features that improve recovery rates in a default relative to unsecured high-yield bonds, though they do not eliminate default risk.

The defining structural feature is the floating interest rate. Unlike a traditional bond, which locks in a fixed coupon rate for its entire life, a bank loan typically pays a rate tied to a short-term reference rate (historically LIBOR, now generally SOFR, the Secured Overnight Financing Rate, following the industry-wide LIBOR transition) plus a fixed spread, and that reference rate resets every one to three months. This means a bank loan's income payment rises when short-term rates rise and falls when they fall, which is precisely why the fund's price is far less sensitive to interest rate changes than a fixed-rate bond fund of similar credit quality.

Key idea Duration and credit risk are two separate dimensions, and a bank loan fund deliberately trades one for the other. Its floating rate structure gives it very low duration (rate sensitivity), often close to zero, but this says absolutely nothing about credit risk, the chance the underlying borrower fails to pay. That risk is real, and it is concentrated in exactly the below-investment-grade companies whose repayment ability is most in question during a downturn.

Because these loans are made to already lower-quality borrowers, bank loan funds behave, in most stress scenarios, considerably more like high-yield bond funds than like a stable, low-risk cash alternative. Historical default rates on leveraged loans have risen sharply during past recessions, and recovery rates, while typically better than for unsecured high-yield bonds because of the senior, secured structure, are far from guaranteed and vary significantly by industry and specific deal terms.

How the math works

Example 1: How the floating coupon actually adjusts. A bank loan fund holds a loan paying SOFR plus a 4.5% spread. When SOFR is 4.0%, the loan pays a total coupon of 4.0% + 4.5% = 8.5%. If the Federal Reserve raises short-term rates and SOFR climbs to 5.5% over the following year, the loan's coupon resets upward to 5.5% + 4.5% = 10.0%, with no change in the loan's price required to reflect the higher rate environment, unlike a fixed-rate bond, whose price would need to fall to bring its fixed coupon in line with the new, higher prevailing rates. This is the core mechanical advantage floating-rate structure provides against rising rates.

Example 2: What happens in a recession, when credit risk dominates. An investor holds $100,000 in a bank loan fund yielding an attractive 9% at the start of a recession, expecting the floating structure to protect the position. As the recession deepens, the below-investment-grade borrowers underlying the fund's holdings begin showing rising default rates, a plausible illustrative scenario given historical recession-era default spikes in leveraged loan markets, and the fund's net asset value falls 15% over six months as the market prices in higher expected credit losses across the portfolio, even though most individual loans have not yet formally defaulted. The $100,000 position falls to roughly $85,000 in market value, a genuine, realized-on-paper loss, despite the fund's floating rate structure having done exactly what it was designed to do regarding interest rate risk; the loss came entirely from the credit dimension the floating structure was never designed to address.

Key idea The Federal Reserve typically cuts short-term interest rates during or after a recession begins, which is precisely when a bank loan fund's floating coupons reset downward, at the same time that credit risk (the primary risk this asset class actually carries) is rising. The two effects compound in the same, unfavorable direction during exactly the environment where an investor would most want ballast, not compounding trouble.

How it shows up in real portfolios

An investor building a fixed income allocation with a specific goal of reducing interest rate sensitivity, perhaps someone who lived through a sharp bond market decline during a period of rapidly rising rates and wants to avoid a repeat, may be attracted to a bank loan fund's low duration without fully appreciating that they are trading one risk (interest rate risk) for a different, and in many stress scenarios larger, risk (credit risk). A more complete fixed income allocation typically uses bank loan exposure, if used at all, as a deliberate, sized-down credit allocation alongside, not as a replacement for, a core holding of high quality, investment grade bonds that genuinely provide ballast during a stock market downturn.

A retiree relying on portfolio income for living expenses, drawn to a bank loan fund's attractive current yield relative to money market funds or short-term Treasuries, should weigh that higher yield specifically against the real possibility of a 10% to 20% price decline during a recession, precisely the kind of environment when a retiree is least able to absorb a sudden drop in a supposedly conservative portfolio sleeve. Comparing the fund's yield not just to Treasuries but to comparable high-yield bond funds is a more honest apples-to-apples check on whether the extra yield truly reflects extra credit risk, which in most market conditions it does.

An investor comparing a bank loan fund to a short-term Treasury fund as a place to park money earmarked for a near-term expense should recognize these are not comparable substitutes despite both carrying "low duration" as a headline feature. A short-term Treasury fund carries essentially no credit risk, backed by the full faith and credit of the federal government, while a bank loan fund's principal value can decline meaningfully even over a short holding period if credit conditions deteriorate, making it a poor fit for money that needs to be reliably available on a specific near-term date.

A financially sophisticated investor deliberately allocating a modest, clearly sized slice of a portfolio, for example 3% to 5% of total fixed income, to bank loan funds as a specific, intentional credit bet, separate from and in addition to a core high quality bond holding, is using the asset class in a way that matches its actual risk profile. The mistake to avoid is treating a bank loan fund as a core, conservative bond substitute rather than as the credit-sensitive instrument it actually is.

Actionable breakdown

  • Understand these funds behave more like high-yield bonds than like cash.
  • Expect meaningful price drops in recessions, separate from any rate-driven decline.
  • Check the fund's average credit rating and default history before assuming it is safe.
  • Compare the yield against comparable high-yield bond funds, not against Treasuries.
  • Size any position as a small, deliberate credit allocation, not a core bond holding.
  • Confirm you understand loan market liquidity, which can lag during periods of stress.

Common pitfalls

  • Buying a bank loan fund purely because "floating rate" sounds safe. Floating rate addresses interest rate risk specifically; it says nothing about the credit risk that actually dominates this asset class's behavior in a downturn.
  • Ignoring loan market illiquidity. Bank loans trade in a less liquid market than bonds, and a fund's daily-priced net asset value can lag the true, harder-to-observe market price during periods of stress.
  • Treating the higher yield as free money. The extra yield over Treasuries or investment grade bonds is compensation for real credit risk, not a market inefficiency.
  • Sizing the position as if it were a core, conservative bond holding. Its recession-era behavior looks far more like high-yield credit than like the ballast role core bonds are meant to play.
  • High yield bond, the closest comparable asset class for gauging real risk.
  • Duration, the interest rate sensitivity measure this fund type minimizes.
  • Credit rating, the key data point for assessing the underlying borrowers.
  • Default, the risk that actually drives this asset class's returns in a downturn.
  • Bonds guide for how this fits into a broader fixed income allocation.

The bottom line

A bank loan fund trades interest rate risk for credit risk, so it should be treated as a credit investment first and a rate hedge second.

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