Whale Wallet
A wallet address on Polymarket known for placing unusually large trades, often monitored by copy-trading bots for replication signals.
Definition
A whale wallet is a Polymarket wallet address that consistently places large-size trades, typically in the tens of thousands of dollars per position. Because all Polymarket transactions are on-chain, whale activity is fully public and observable via the Data API. Whale wallets are of interest because some consistently profit, suggesting genuine informational or analytical edge worth emulating.
In practice
The polycopy bot maintains a list of target whale wallet addresses in its configuration. The watcher module queries the Data API periodically for each address and looks for new conditional token position changes above a dollar threshold. Not all whale wallets are worth copying — some are profitable in one market type but lose in others, and past performance does not guarantee future results. The bot tracks each whale's historical hit rate and adjusts copy size accordingly. Whale activity in thin markets can also be self-fulfilling: a large buy from a known whale may attract copiers who push the price further in the same direction.