The crackdown on prediction market insider trading

This Marketplace episode explores two major economic themes: the fragility of the petrodollar system amid the ongoing war in Iran and the growing regulatory scrutiny of insider trading in prediction markets. As oil prices hit record highs due to the closure of the Strait of Hormuz, the episode examines how Iran's push to demand yuan payments for passage could undermine decades of U.S. financial dominance. Edward Fishman of the Council on Foreign Relations explains the historical roots of the petrodollar system and warns that if oil pricing shifts to yuan, it could accelerate the decline of the dollar as the global reserve currency. Simultaneously, the episode investigates the rise of prediction markets like Kalshi and Polymarket, where insider trading—inspired by the fictional scheme in *Trading Places*—is now being actively policed. While new rules ban politicians and athletes from betting on events they influence, enforcement remains a challenge, especially offshore. Experts debate whether insider information enhances market accuracy or erodes trust. The episode also touches on broader economic indicators, including declining durable goods orders and air traffic congestion, highlighting how geopolitical tensions are reshaping markets, infrastructure, and policy. Key takeaways include: (1) The petrodollar system is under unprecedented pressure from Iran’s strategic control of the Strait of Hormuz and its push for yuan-denominated oil payments; (2) Prediction markets, while valuable for forecasting, face growing legal and ethical challenges around insider trading, with regulators and platforms taking steps to enforce fairness; (3) Small airports like Burlington, Vermont, offer a potential solution to air traffic congestion, but airlines prioritize major hubs due to profitability; (4) The U.S. government’s ability to maintain economic and regulatory integrity depends on transparent, enforceable rules—especially in high-stakes markets and global financial systems.