The Fed's first hike since 2023. A 10-year Treasury at 5.1%. Oil near $99. And a late-month Core PCE surprise at 3.0%. Here's what happened — and what it means for your plan.
Sources: Federal Reserve, U.S. Bureau of Economic Analysis, S&P Dow Jones Indices, U.S. Treasury. Returns and yield figures are approximate; subject to final verification. Past performance is not indicative of future results.
September delivered on its historical reputation as one of the market's more difficult months. The S&P 500 declined approximately 1.4 percent for the month, weighed down by the Federal Reserve's unanimous decision to raise interest rates on September 16 and the subsequent surge in Treasury yields. The 10-year yield reached 5.1 percent on September 23, its highest level since June 2007. Despite the September pullback, the index remains up approximately 11 percent year-to-date, a meaningful result against a backdrop of higher borrowing costs and continued geopolitical uncertainty.
The monthly scorecard below shows the S&P 500's performance through the first nine months of 2026. The breadth of the September decline was notable: roughly three out of four stocks in the index posted losses during the month, even as the overall index decline remained measured. The scorecard is designed to put one month in the context of the full year. For earlier monthly context, see our June 2026 market commentary and April 2026 market recap.
| Month | S&P 500 | Notable Context |
|---|---|---|
| January 2026 | +2.8% | Strong start; OBBBA debate opens |
| February 2026 | +3.1% | Fed holds; OBBBA advances in Congress |
| March 2026 | −1.2% | Tariff concerns; yield curve steepens |
| April 2026 | +4.7% | Strong earnings; OBBBA signed into law |
| May 2026 | +2.3% | Fed holds; inflation data mixed |
| June 2026 | +3.8% | Market rally broadens across sectors |
| July 2026 | −0.9% | Jobs report shocked (−23K); Iran tensions begin |
| August 2026 | +2.7% | Jobs rebound (+162K); Jackson Hole hawkish |
| September 2026 | −1.4% (approx.) | Fed hike (+25bp); 10-year peaks at 5.1% |
S&P 500 monthly returns are approximate. Source: S&P Dow Jones Indices. Past performance is not indicative of future results. The S&P 500 is an unmanaged index and cannot be invested in directly.
On September 16, the Federal Open Market Committee voted 12-0, unanimously, to raise the federal funds rate by 25 basis points. The new target range of 3.75 to 4.00 percent marks the Fed's first rate increase since 2023 and signals a meaningful shift from the easing posture many market participants had expected entering the year. Following the decision, Chair Powell emphasized that services inflation and a resilient labor market left the committee with no choice but to act. The updated dot plot released alongside the decision showed that committee members do not expect rate cuts through 2027.
Bond markets reacted swiftly. The yield on the 10-year Treasury note climbed to 5.0 percent on decision day and continued rising, reaching 5.1 percent on September 23. That reading represents the highest level for the 10-year yield since June 2007. Rising yields reflect bond prices moving lower, which has real implications for existing fixed-income portfolios. It also matters more broadly: the 10-year yield is a benchmark that influences mortgage rates, corporate borrowing costs, and equity valuations across the entire economy.
| September 16, 2026 FOMC Decision Summary | |
|---|---|
| Decision | Rate Hike, +25 basis points |
| New Target Range | 3.75% to 4.00% |
| Vote | 12-0 (Unanimous) |
| Previous Hike | 2023 (first hike in three years) |
| Dot Plot Signal | No rate cuts projected through 2027 |
| 10-Year Yield Peak (Sept. 23) | 5.1% (19-year high) |
| Next FOMC Meeting | October 27–28, 2026 |
When long-term Treasury yields rise, existing bond prices fall. This is arithmetic, not opinion. If you hold intermediate or long-duration bonds, September's yield surge likely produced a short-term decline in that portion of your statement balance. That is not a signal to sell. The income those bonds generate remains intact, and they continue to mature at par value. Reacting to short-term price moves in fixed income is one of the most common and most costly mistakes income investors make.
For clients in or near retirement, higher yields have a genuine upside: new money reinvested as bonds mature now earns more. Money market accounts and short-duration cash equivalents are yielding at levels not seen in many years. Your income-bucket structure is designed precisely for this kind of environment, where near-term spending is covered by shorter-duration assets while your longer-term positions have time to recover and compound.
The Iran situation that began rattling markets in July continued throughout September. Iran struck targets in Kuwait on September 3 and attacked a U.S. naval vessel on September 8, keeping Strait of Hormuz transit risk elevated. Oil prices held near $99 per barrel for much of the month, adding to inflationary pressure and complicating the Fed's assessment of how much further tightening the economy can bear. Roughly 20 percent of the world's oil supply transits through the Strait of Hormuz; sustained disruption in that corridor has direct consequences for energy costs here at home. For the longer arc of this story, see our earlier piece on navigating geopolitical storms in March 2026.
Then, on the final day of the month, the Bureau of Economic Analysis reported August inflation data. Headline PCE came in at 3.4 percent, down from 3.7 percent in July. Core PCE, which strips out food and energy and is the Fed's primary inflation gauge, fell to 3.0 percent, meaningfully below the 3.3 percent reading analysts had expected and below the 3.3 percent reading from July. While 3.0 percent remains well above the Fed's 2.0 percent target, the directional move was welcomed. The chart below shows where inflation stands relative to the Fed's goal and recent readings.
Core PCE at 3.0 percent is still above the Fed's 2.0 percent target, and oil near $99 per barrel means energy costs continue to affect both the inflation readings and everyday household budgets. For retirement income planning, the inflation rate matters in two ways: it determines how long the Fed keeps policy rates elevated (affecting bond portfolios and cash yields), and it determines how far your income needs to stretch over a 20-to-30-year retirement horizon.
The Core PCE moving from 3.3 percent to 3.0 percent in a single month is a meaningful improvement. The Fed has been consistent: it needs to see sustained progress toward 2.0 percent before reversing course. We build retirement income plans around conservative inflation assumptions, which means the purchasing power of your income floor is not dependent on inflation returning to 2 percent on any particular schedule. The plan is built to function across a range of inflation environments, including this one. If you want a calm check on whether your income plan is built for this environment, start with our Retirement Paycheck Readiness Scorecard.
The next Federal Reserve policy meeting is October 27–28. The September dot plot showed no rate cuts projected through 2027, and whether the committee adds another hike at the October meeting will hinge on the inflation and labor market data between now and then. September inflation figures (both CPI and PCE) will be released in October and watched closely. The 10-year Treasury yield ending September near 5.0 percent means that elevated borrowing costs are already filtering through the economy in real time, across mortgages, auto loans, corporate debt, and government financing. We will share a full assessment in next month's commentary as October's data unfolds.
The following is provided for informational context only and does not represent a forecast or prediction of market performance.
Thank you for the trust you place in us. We hope this commentary gives you useful context for understanding what September's market environment means for your financial plan. Please reach out at any time if you have questions or if anything here prompts a conversation you would like to have.
Higher yields, sticky inflation, and geopolitical noise can make any plan feel noisier than it is. A short scorecard can help you see — calmly — whether your income floor is built for this environment.
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