A whale bought. That is the start of the question.

A large wallet buys a contract. Other accounts follow. The chart moves. It is easy to turn that sequence into a story about somebody knowing more.

Start with the part you can actually observe: an address traded a certain quantity at a certain time. Its motive is a separate question.

You see one piece of the book

That address could be hedging elsewhere, reducing another exposure, testing execution, or taking a view you disagree with. A visible purchase does not reveal the owner's entire portfolio.

Suppose a wallet bought at 40 cents and your alert arrives at 54. Even if you copy the direction perfectly, you have not copied the entry. A later exit at 50 would produce opposite outcomes for the two accounts.

Inspect the signal before following it

Check the age of the activity, the actual fill price, remaining depth, and whether the position is still open. Compare completed trades rather than cherry-picked winners.

Multiple wallets can also belong to one operator. Counting addresses as independent agreement can exaggerate the strength of a signal.

Wallet tracking can help generate research questions. It becomes much less useful when the question is replaced with a buy button.

Treat the alert as an invitation to investigate. The address may have a reason. You still need your own.

Further reading: Prices and order books · Resolution rules · Current fees.

Explore the markets: Open Polymarket (referral link).