The Bureau of Labor Statistics' October 2 Employment Situation report, which showed the September unemployment rate rising to 4.2% from 4.1% in August alongside a subdued +29,000 nonfarm payroll gain, anchored the market's near-certain pricing. Weak hiring across professional services, information, and government sectors, combined with a 78,000 increase in the unemployed and upward revisions to prior months' data, aligned with trader expectations and reinforced the outcome. Labor force participation edged higher to 61.8%, but the overall cooling in job growth relative to consensus forecasts of around 90,000 additions drove the decisive shift. While official BLS figures carry minimal revision risk once released, any subsequent methodological adjustments or seasonal factor updates could theoretically alter the final tally, though historical precedent suggests such changes are rare and typically small.