The robust August ISM Services PMI reading of 55.4, which exceeded consensus by 1.1 points amid accelerated business activity at 61.7 and new orders at 60.9, anchors trader sentiment for the September release by highlighting sustained services expansion. Market-implied odds cluster around the mid-54 to mid-55 range because participants weigh this momentum against typical post-surge moderation toward the 12-month average near 53.7, alongside persistent employment contraction at 47.8 and elevated prices at 72.6 driven by tariffs and Middle East supply disruptions. Broader uncertainty stems from mixed leading signals such as rising backlogs and inventories offset by cautious hiring, with the early-October release serving as the key near-term catalyst that could clarify whether demand resilience persists or yields to margin pressures.