At the DealBook Summit 2025, Coinbase CEO Brian Armstrong and BlackRock CEO Larry Fink engaged in a discussion about the role of prediction markets. Armstrong highlighted prediction markets as a significant new domain, offering an alternative source of information outside traditional media for most people. He suggested that policymakers could use these markets to gather "signals" to aid decision-making. Addressing the issue of market manipulation, Armstrong controversially proposed that if the goal is to obtain high-quality signals, insider trading might be desirable, though he acknowledged the need to balance decentralization and fairness. In contrast, Larry Fink expressed a cautious stance, emphasizing his focus on long-term trends over the next 30 years rather than immediate market fluctuations. The discussion underscored differing perspectives on the potential and ethical considerations of prediction markets in shaping future economic and policy landscapes.