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The biggest traders in prediction markets post every position in public. This guide shows you how to read them, vet them, and decide for yourself, on the US-legal exchange.
Educational content only. Not financial, investment, or trading advice. Trading event contracts involves risk of loss. Not affiliated with Kalshi or Polymarket.
Prediction markets publish the leaderboard. Open any trader on it and you can see their live positions, their history, and their profit curve. Most people scroll past. The guide teaches you to stop, read, and judge: which traders are consistent, which ones got lucky once, and what it actually takes to follow one of their positions on an exchange you're allowed to use.
Where the public leaderboards live, how to open a trader's profile, and how to read every number on it.
The three-part filter: trade count, profit, and the shape of the curve. Plus the tells that a "whale" is really a market maker or a one-hit wonder.
Matching a market across exchanges, checking the price you'd actually get, and the sizing math that keeps one bad call from ending the week.
Written from scratch and researched against the exchanges' own documentation, the regulators' filings, and the public data behind the leaderboards.
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No one can promise that, and we don't. Prediction markets are zero-sum after fees; most participants lose. The guide explains how public trader data works and how to evaluate it, so that any decision you make is an informed one. It is education, not advice.
Trading on Kalshi, a CFTC-regulated exchange, is legal for eligible US residents in the states where it operates. Simply viewing public leaderboard data on any site is viewing public data. The guide covers the current legal landscape in plain English, including what has changed in 2026, and tells you to confirm your own state's rules.
No. The sizing chapter is built around small accounts and assumes you will start with money you can lose entirely.
No. Make Me Whale is an independent educational publication by Short Bread Apps, LLC. We receive no compensation from any exchange.
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Because the full product is delivered the moment you pay, all sales are final. If a download link ever fails, email us and we will fix it the same day.