Central Banks

    Dollar Index Holds Above 100.5 After Fed Hikes Rates to 4.00%

    3 min read
    477 words
    Updated Sep 28, 2026

    The U.S. Dollar Index broke above 100.5 following a 25-basis-point interest rate increase by the Federal Reserve to 3.75%-4.00%. Derivatives markets are now pricing a 56% probability of an additional rate hike in October amid lingering inflation pressures.

    Written and reviewed by Kevin Nerway · Last verified 28 September 2026

    Key Takeaways

    • The U.S. Dollar Index (DXY) traded above 100.5 during the September 22, 2026 trading session, hitting its highest level since July following the Federal Reserve's 25-basis-point rate hike.
    • Money markets repriced the odds of another Fed rate increase in October to 56%, up from 43.5% the prior week, as central bankers emphasized that inflation risks persist.
    • Major currency pairs traded under broad dollar strength: EUR/USD anchored near 1.14, GBP/USD tested two-month lows near 1.33 following weak UK fiscal data, and USD/JPY held near 157.50.
    • Energy markets moderated from earlier geopolitical spikes, with WTI crude dropping to around $91 per barrel and Brent falling below $100.

    Federal Reserve Reprices Dollar Index Above 100.5

    On Tuesday, September 22, 2026, the U.S. Dollar Index traded above 100.5, pressing into territory not seen since July. The core driver behind this rally was the Federal Reserve's decision to raise the federal funds target rate by 25 basis points to a range of 3.75%-4.00%. This mark was the central bank's first rate increase since July 2023, reflecting a hawkish pivot in response to sticky consumer inflation, tight labor conditions, and a recent geopolitical oil shock.

    At PropFirmScan, our analysis shows that interest rate differentials are actively shifting short-term capital allocations back into dollar-denominated assets. By signaling that the inflation tightening cycle remains open, Fed officials sparked a noticeable repricing across fed funds futures. Probabilities for another 25-basis-point hike at the upcoming October meeting expanded to 56%, climbing sharply from 43.5% just seven days earlier. Short-duration U.S. Treasuries and dollar yield products have gained fresh traction, giving the greenback solid underlying momentum across FX pairs.

    Traders looking to understand how these macro shifts filter through smart money order books can examine central bank policy divergence in institutional flows to identify structural positioning trends across global bank desks.

    Foreign Exchange Dynamics: Yen, Euro, and Cable Face Dollar Strength

    The dollar's rally has reverberated across major currency pairs, creating clear directional trends for day trading desks.

    • USD/JPY: The pair traded near 157.50, holding near elevated levels despite the Bank of Japan executing its own rate hike last week. Japanese monetary authorities remain under intense scrutiny as intervention warnings build around these threshold levels.
    • EUR/USD: The single currency consolidated near 1.14, unable to mount a sustained push against the elevated rate environment in the United States.
    • GBP/USD: Sterling pressed lower toward 1.33, touching two-month lows. In addition to broad U.S. dollar buying, Cable faced internal headwinds after UK public finance figures revealed an August budget deficit of £18.3 billion, surpassing market expectations and raising concerns over fiscal sustainability.

    For active evaluators, navigating extended trends in pairs like USD/JPY or GBP/USD requires strict adherence to risk parameters. Evaluating news event trading policies across prop firms ensures that rapid expansion in volatility does not trigger technical violations on funded accounts.

    Macro Drivers: Easing Oil Shock vs. Hawkish Monetary Stance

    While rate expectations

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