How to Lay and Trade Steamers on the Betfair Exchange

The Betfair Exchange lets you do something bookmakers do: lay a horse — bet that it will lose. That opens up strategies built around market moves rather than picking winners. This guide is educational, not betting advice.

What laying actually means

When you lay a horse you accept someone else’s back bet. If the horse loses, you keep their stake; if it wins, you pay out at the odds. Your risk (liability) is (odds − 1) × stake — so laying a horse at 5.0 for £10 risks £40 to win £10. Laying is naturally suited to horses you expect to underperform their price, such as short-priced drifters.

Trading a steamer for a green book

Trading means backing and laying the same horse at different prices to lock in a position regardless of the result. A classic move: back a horse early that you expect to steam, then lay it back once the price has shortened — the difference is your profit (“greening up”). It relies on correctly anticipating the move, which is where tracking market movers helps.

Don’t forget commission

The exchange charges commission on net winnings (commonly around 2–5% depending on the account), so a strategy has to clear that hurdle to be profitable. Always factor it in.

Watch the move, not just the price

Our live market movers show each runner’s odds and Betfair Exchange journey from the morning to the off, so you can see steamers and drifters forming in real time. Results then publish with the Betfair Exchange BSP so you can review how the moves played out.

18+. Bet responsibly. This is general information about how exchange markets work, not betting advice or a guarantee of profit.