Trading out and greening up

Every other strategy in this section leans on one idea: a bet you have already placed can be answered by an opposing bet at a different price, and the two together settle the question early. Back high then lay low, or lay low then back high, and the result is the same whichever way the market finishes.

What a position actually is

A position is the net of every matched bet you hold on one selection. Hold a single back bet and your position is simple: you win one amount if the selection wins, you lose your stake if it doesn't. Two outcomes, and the market decides which one you get.

An opposing bet changes that. If you backed at a price and the market has since shortened, laying the same selection at the new, lower price takes on a liability that is smaller than the return you stand to collect. Size that lay correctly and the two bets cancel: the same figure lands in your account whether the selection wins or loses. Nothing about the event has become more predictable — you have simply stopped being exposed to it.

Green and red are the same mechanic

Traders call a locked-in profit green and a locked-in loss red, after the colours most trading screens use. The arithmetic is identical in both directions. If the price has moved against you, the equalising bet caps the damage at a known number rather than leaving your full stake riding on the outcome.

Capping a loss isn't the method failing. It's the method working. A trader who can take a small red calmly when the reasoning behind a position stops holding is doing the same disciplined thing as one who banks a small green.

A worked example

Suppose you back £20 at odds of 6.0, and the price shortens to 4.0. To equalise, the lay stake is the back stake multiplied by the back price, divided by the lay price:

L = B × Bo ÷ Lo = 20 × 6 ÷ 4 = £30

Laying £30 at 4.0 carries a liability of £30 × 3 = £90. Here is how the two bets settle together:

Both columns come to the same £10, which is simply the lay stake minus the back stake: £30 − £20. That relationship holds generally — the locked figure is always L − B — and it works in reverse too. Lay £30 at 3.0, then back £18 at 5.0 (B = L × Lo ÷ Bo = 30 × 3 ÷ 5), and you again hold £12 either way. All the figures on this page are before commission.

Where "greening up" comes from

In a market with more than two runners, equalising across every outcome leaves a screen showing a positive number beside each one — all green. Hence the phrase. On a two-outcome market the same idea is easier to picture and the name stuck anyway.

Not every position has to be flattened. Leaving part of it unhedged — often described as taking your stake off the table and letting the remainder run — is a deliberate choice about how much certainty you want to buy, not a job left half done. Partial Trade Out exists for exactly that.

Commission comes off the top

Exchanges charge commission on net winnings in a market, so the amount you keep is smaller than the raw locked figure above. Rates differ by exchange, and some of them vary with account activity — the exchange guides carry the current published figures and the terms behind them. Two consequences are worth holding on to: a green that looks marginal before commission may not survive it, and a red is a red whether or not commission applies, because there are no net winnings to charge against.