Traders assign overwhelming probability against a Chinese invasion of Taiwan by late September 2026 because no large-scale amphibious mobilization, missile deployments, or blockade preparations have been observed in the past month, and routine military exercises remain at baseline levels. Economic interdependence, ongoing diplomatic signaling between Beijing and Washington, and established U.S. forward posture continue to raise the threshold for sudden kinetic action within the narrow remaining window. The short timeline itself functions as a structural barrier, requiring months of visible force posture changes that have not materialized. Late-breaking developments that could still shift odds include an unforeseen leadership directive or rapid escalation in cross-strait incidents, though such triggers lack supporting indicators at present.