The prediction market sector is seeing massive growth, having generated $150B+ in cumulative volume. The foundation of this expanding space relies entirely on indexed onchain data, which powers every trading agent, dashboard, and individual market. If you are looking at Polymarket, all of its data is already indexed directly on The Graph. You can easily interact with this information by calling the Token API, streaming it via Substreams, or querying it using Subgraphs.

You can read more about this topic here: https://thegraph.com/blog/prediction-markets-data-layer/