The Dollar Index (DXY) briefly pushed above 100.50, its highest since late July, before easing back to just over 100.30 after the Bank of Japan (BoJ) raised its policy rate to 1.25%, a level last seen in 1995. The euro makes up 57.6% of the basket and the yen 13.6%, leaving around seven tenths of the index tied to currencies whose central banks have tightened in September. The European Central Bank (ECB) lifted its deposit rate to 2.50% on 10 September, the Federal Reserve moved to 3.75–4.00% on 16 September, and the BoJ followed on 18 September; each change was 25 basis points, keeping the rate gaps broadly unchanged. Sterling, worth 11.9% of the index, tracked a Bank of England (BoE) rate held at 3.75% since December, so that spread widened only because the Fed moved.
The BoJ decision passed 7–2, with Asada and Sato dissenting, as Japanese core inflation slowed to 1.7% in August from 1.8% in July. Yield differentials remain stark: dollars earn 3.75–4.00%, euros 2.50% and yen 1.25%, while 10-year US Treasuries pay about 5.00% versus roughly 2.95% in Japan. Futures imply a 57.6% probability of another Fed rise on 28 October and price a peak at 4.50–4.75% by mid-2027, with no change anticipated for the following 18 months. Ten Fed speeches are scheduled from Monday to Friday, including three from New York Fed President Williams; the week’s data include an ADP four-week average on Tuesday at 12:15 GMT, expected at 16.25K, and flash PMIs on Wednesday at 13:45 GMT, forecast to slow but remain above 50. Technical markers cited include support at 100.00 and the 50-day EMA near 99.70, resistance at 100.50 then 101.00 and 101.50, and a daily Stoch RSI near 68. The background guide adds that the USD accounts for over 88% of global FX turnover, or about $6.6 trillion a day, and references QE, QT and the Fed’s 2% inflation target.
Dollar Index and Yen: Tactical Opportunities Following Central Bank Moves
We should look to buy short-term Dollar Index (DXY) call options while the index stays above the crucial 100.00 support level. The momentum is clearly shifting upward, with the daily Stochastic RSI rising toward 68, pointing to a test of the 101.00 and 101.50 resistance zones. If the index closes a day below the 50-day moving average at 99.70, we must quickly abandon this bullish stance.
The Bank of Japan’s rate hike to 1.25% actually triggered a “sell the fact” reaction, presenting us with a prime opportunity to play Yen weakness. We can utilize USD/JPY bull call spreads to capture upside momentum while limiting our premium risk. Because Japanese core inflation cooled to 1.7% in August, the market is realizing that further Japanese rate hikes will be slow and hard to come by.
Trading Strategies Ahead of Key Fed and US Macroeconomic Events
With Fed futures pricing a 57.6% chance of an October 28 rate hike, we should position for a volatility spike in October Fed Fund futures. The ten upcoming Fed speeches, including three from New York Fed President Williams, will likely trigger sharp swings in these odds. We can trade straddles on short-term interest rate options to profit from the heavy flow of central bank guidance next week.
The upcoming US macro data, specifically the ADP employment average on Tuesday and Wednesday’s Flash PMIs, will decide if the Fed actually hikes in October. Historically, when PMI data remains above the 50 expansion threshold, the Dollar tends to hold its yield advantage. We should buy DXY calls ahead of these releases to front-run any positive growth surprises that push the hike probability toward 70%.
