During the week of April 20–24, 2026, geopolitical tensions centered around Iran and the Strait of Hormuz led to significant market volatility. The original outlook for the week included three scenarios: a base case with ongoing talks (45% probability), a risk-off scenario involving a ceasefire collapse and WTI crude oil breaching the $90.70 regime-change ceiling (35%), and a risk-on scenario where Witkoff and Kushner would return from Islamabad with a framework deal (20%) [1].
Mid-week, the situation changed dramatically when Iran formally refused to attend negotiations on Tuesday, resulting in the suspension of the risk-on scenario and a redistribution of probabilities across four updated scenarios [1]. This refusal triggered a sequence of events: a risk-off environment on Tuesday, a brief de-escalation on Wednesday, near-kinetic escalation on Thursday, and a partial diplomatic pivot by Friday's market close [1].
Despite the turbulent week, the overall framework for the situation remained more resilient than the volatile path suggested. However, the week did not fit neatly into any single pre-defined scenario, reflecting the complexity and unpredictability of the geopolitical landscape [1].
No specific market data such as WTI price movements, percentage changes, or direct market reactions were provided in the source. Analyst opinions were reflected in the shifting scenario probabilities and the observation that the framework held up under pressure [1].
CONCLUSION
Iran's refusal to participate in negotiations led to a volatile week marked by shifting geopolitical scenarios and market uncertainty. While the situation cycled through multiple risk states, the underlying framework proved resilient, though no single scenario dominated. Market participants faced heightened uncertainty, but no concrete market data or ticker symbols were provided.