According to The Kobeissi Letter, an unusual $3 million purchase of UnitedHealth ($UNH) put options was executed at 3:59 PM ET, as reported by CheddarFlow. Just three hours later, the Department of Justice announced a probe into potential Medicare fraud at UnitedHealth. Following the news, $UNH stock dropped 8% after hours, highlighting the impact of regulatory investigations on equity markets. This rapid move underscores the potential for increased volatility spillover into related healthcare blockchain tokens and broader crypto markets, as traders monitor regulatory risk events for actionable signals (Source: The Kobeissi Letter, CheddarFlow, Twitter, May 15, 2025).