Wall Street, prediction markets, and crypto all faced pivotal moments this week. Jamie Dimon says JPMorgan could deploy up to $20 billion on the right acquisition, regulators bring another insider trading case tied to Polymarket, and the battle over who controls and taxes prediction markets intensifies. Meanwhile, Grayscale hits pause on IPO plans, FalconX quietly moves toward the public markets, and Tether’s U.S. stablecoin posts eye-catching growth.