When someone bets $100k on one side of a forecast, that person almost always knows more than market consensus. Whale-watching gives you signal.
Prediction markets are inefficient enough that informed participants regularly have edge. When a wallet with a historical hit-rate enters a large position, that's a stronger signal than the aggregate market price. Smart-money-following is established on crypto and equities; on prediction markets it remains under-analysed.
Data hookup to the Polymarket subgraph in exploration; Kalshi live trades need API access. Wallet identification and track-record aggregation is its own sub-project. Realistic launch window: 2027.