Copy the whales on prediction markets.
Automatically.
yacht.bot watches every trade on Kalshi and Polymarket. When a six-figure order fills, it mirrors the position with Kelly-sized exposure and managed exits — so you can hold conviction-weighted positions without watching a screen.
Private waitlist · 2 joined
Inside the app
See what the bot sees.
Portfolio, active positions, and the live whale feed — one glance and you know exactly what's deployed, what's pending, and which markets the big money is moving.
Whale detection
Listens to both Kalshi and Polymarket trade feeds 24/7. Configurable threshold — defaults to orders ≥ $25k.
Adaptive Kelly sizing
Position size is computed from the whale's implied edge using half-Kelly, then clamped to your min/max bet.
Three-layer exits
Hard −25% stop, trailing 15-point probability stop from peak, plus optional pre-resolution exit. Checked every 15 seconds.
Paper mode by default
Real signals, simulated fills. Watch the bot run before you risk a dollar.
Zero fees, zero commission
No subscription. No per-trade fee. No cut of profits. yacht.bot runs on ads — your gains stay yours.
Two markets, one bot
Kalshi for US-regulated CFTC-licensed contracts in USD. Polymarket for global, crypto-funded prediction markets. Toggle each independently.
Prediction markets are inefficient when retail dominates and tighten up when size shows up. yacht.bot doesn't bet opinions — it piggybacks on the size, at a fraction of the capital, with the exit discipline whales usually skip.
$25k+
whale threshold
half-Kelly
sizing rule
15s
exit-loop tick