Higher yields may look like an opportunity, but they don’t tell the whole story. As Treasury rates have moved higher, credit unions have more income potential to consider, along with important questions about liquidity, duration, and how quickly principal will return from mortgage-related assets. 

Rather than simply asking where to find more yield, credit unions should use this rate environment to ask a bigger question: Is our portfolio still positioned for what comes next?

The Current Landscape

Recent Treasury market repricing has changed the investment landscape for credit unions. Between June 30 and September 18, the two-year Treasury yield increased from approximately 4.14% to 4.74%, while the 10-year Treasury yield rose from roughly 4.42% to 4.99%. 

Higher yields may improve income potential, but they also warrant a closer review of duration, liquidity, and mortgage-related cash flows.

Higher Rates Can Extend Existing Portfolios

For credit unions holding mortgage-backed securities or mortgage loans, higher rates can slow prepayments and extend asset lives. As refinancing activity declines, principal may return more slowly than expected, reducing near-term liquidity and limiting reinvestment flexibility.

Management should revisit prepayment assumptions, average-life projections, cash-flow timing, and price sensitivity across multiple rate scenarios. These updates can help determine whether mortgage-related assets still align with liquidity needs and interest-rate risk limits.

Avoid Extending Duration Simply to Capture Yield

Although term rates have increased, the yield curve may not provide sufficient compensation for adding meaningful duration. Shorter maturities can now offer attractive income while preserving flexibility for future reinvestment.

Longer investments may still be appropriate, but they should be selected deliberately. Before extending, credit unions should compare longer mortgage-backed securities with shorter sequential CMOs, certificates of deposit, discount callable agencies, floaters, or other short-duration alternatives to determine the best balance of income, liquidity, and risk.

Align Loan Pricing and Investment Decisions

Rate movement should also inform loan pricing. If loan rates lag market rates, a credit union may add longer-term assets without being adequately compensated for interest-rate and liquidity risk.

Investment and lending decisions should be coordinated within the broader balance sheet strategy. Management and ALCO should evaluate loan yields, investment alternatives, funding costs, liquidity requirements, and capital implications together rather than in isolation.

A Strategic Path Forward

The objective is not simply to maximize today’s yield. It is to balance income, liquidity, cash-flow stability, and future reinvestment flexibility. Credit unions should consider the following actions:

  • Stress-testing mortgage-related holdings using slower prepayment assumptions.
  • Reassessing projected portfolio cash flows and average lives.
  • Comparing investments based on yield, structure, liquidity, and price volatility.
  • Favoring shorter or more predictable cash flows when additional duration is not adequately rewarded.
  • Confirming that loan pricing has kept pace with changes in market rates.
  • Evaluating each decision within the institution’s overall ALM and liquidity framework.

A meaningful rate move should prompt more than a search for higher yield. It should lead to a disciplined review of how each investment supports earnings objectives, liquidity needs, and tolerance for interest-rate risk.

Now is the time to take a fresh look at your portfolio strategy. For more information about specific investment offerings and availability, reach out to our senior investment services representatives at 800/366-2677 or [email protected].