S&P 500 & United States — United States Commodity Futures Trading Commission

S&P 500: The S&P 500 index experienced significant jumps and plunges following Donald Trump's announcements on tariffs, with unusual trading activity preceding these movements.

United States — United States Commodity Futures Trading Commission: The United States — United States Commodity Futures Trading Commission has jurisdiction over predictions markets like Polymarket and Kalshi, and its chair stated a 'zero tolerance' for fraud and insider trading, despite not commenting on specific allegations.

S&P 500: The S&P 500 opened more than two percent higher, indicating positive market reaction to the de-escalation of tensions.

United States — United States Commodity Futures Trading Commission: The United States — United States Commodity Futures Trading Commission, which oversees US commodity derivatives markets, did not immediately respond to a request for comment.

S&P 500: The S&P 500 held near its records as crude oil prices fell, indicating market optimism about a potential resolution to the Strait of Hormuz conflict.

United States — United States Commodity Futures Trading Commission: The United States — United States Commodity Futures Trading Commission is investigating $7 billion in oil price trades that occurred before key Iran-related announcements by Donald Trump, indicating potential market manipulation.