The Federal Reserve lowered its target range for the federal funds rate by 50 basis points on September 18, 2024, following with cuts of 25 basis points in November and December, bringing the range from 5.25–5.50 percent down to 4.25–4.50 percent by year-end, per the Federal Open Market Committee's published statements. For students of portfolio construction, the episode is a clean illustration of duration — the sensitivity of a bond's price to interest-rate changes.
Horison publishes information and education, not investment advice; the concepts below are presented for what they teach, with no view on future rates.
Why did the cuts settle a running argument about duration?
Through 2023 and most of 2024, intermediate-term Treasuries posted repeated price losses as yields rose, and the yield on the 10-year Treasury ended 2024 near 4.6 percent, higher than when the cutting began, per U.S. Department of the Treasury daily yield-curve data. Investors who had reached for long-duration funds expecting cuts to translate directly into price gains learned the documented lesson: duration measures sensitivity to the bond's own yield, which is set by the market, not to the policy rate alone. Short-rate cuts and long-yield rises can — and in late 2024 did — happen at the same time.
The rule of thumb taught in fixed-income coursework: a bond or fund with duration of seven years loses roughly 7 percent of price for each percentage-point rise in its yield, and gains the same for each point of fall. The 2024 cycle showed the estimate working in both directions, unequally.
What is the educational takeaway for allocation?
Three concepts from the episode belong in any allocation framework. First, policy rate is not the yield curve: the funds rate is one overnight rate, while a portfolio's duration exposure runs across maturities priced by market expectations for growth, inflation, and deficits. Second, carry matters: money-market and short-duration instruments captured the high short rates of 2023–2024 with minimal duration risk, a reminder that the decision is between sources of return, not between owning bonds and not owning them. Third, reinvestment timing: maturing short-dated holdings must reinvest at whatever lower rates cuts produce, which is the mirror image of the price risk long holders carry.
The episode established how duration transmitted — and unevenly — a well-telegraphed cutting cycle. What the next cycle does to any point on the curve remains unknown, and the market's own pricing of that question changes daily.
For more context, read How Portfolio Rebalancing Works and Why It Matters.
