Prediction markets are becoming a major source of information for mainstream finance. After Polymarket reached exclusive partnerships with Dow Jones and The Wall Street Journal, this shift has become even more evident—event contract data is no longer just a toy within the crypto community but is now regarded by financial institutions as a barometer of market sentiment. An analysis from August last year when Intercontinental Exchange invested in Polymarket pointed out that real-time data from prediction markets can directly reflect investor expectations, providing a unique reference dimension for traditional capital markets. This evolution is changing how information flows and how market psychology is interpreted. The diversification of financial data sources may ultimately reshape the logical chain of investment decision-making.