ContractTax is building the first real dataset on how Kalshi flippers actually perform: median Sharp Score, win-rate distribution, how many traders are net profitable, and which behaviors cost the most. The live report publishes here automatically once enough traders have opted in to anonymize the numbers safely.
Want to be part of it and see where you rank? Upload your trade history, it parses in your browser, then opt into the public leaderboard.
Get your Sharp ScoreFigures are aggregated from traders who connected their Kalshi history to ContractTax and opted into the public leaderboard. Raw trades never leave the browser unencrypted, only summary statistics are stored, and nothing here identifies an individual trader. The Sharp Score is a 0 to 100 rating that weights skill, profitability, and discipline rather than raw profit, so a small disciplined account can outrank a lucky large one.
This page reflects an opt-in sample of active traders and is not a random sample of all Kalshi users. Treat it as a benchmark, not a census.