Hedge Calculator: Level the Position and See What It Costs

What a hedge actually does

A hedge is a second bet on the opposite result of a position you already hold. Its purpose is narrowing: instead of a large gain or a total loss, you end up with two outcomes that are closer together, and if you stake exactly the right amount they are identical.

The arithmetic is the least interesting part. Your open bet is worth a fixed return if it wins, which is the stake multiplied by the decimal odds. To make the other outcome return the same amount, stake that figure divided by the decimal odds on the other side. A $100 bet at +150 returns $250; at −110 on the other side the level stake is $130.95, and either result pays $250 against $230.95 committed.

That is a locked $19.05, and the number nobody prints beside it is the $130.95 of upside surrendered to get it. Both are real. Which one matters more depends on what you want from the position, and that is not something arithmetic decides.

Where the cost of a hedge hides

Two costs are built into every hedge and neither appears as a line item.

The first is margin. The second bet is a bet, and it carries the same market margin as any other. Hedging at −110 into a market holding 4.55% means the insurance is priced with the book’s edge included, exactly like the original position was. Hedging into a wide market is expensive in a way that hedging into a tight one is not. Measuring that margin needs both current prices rather than the one you are hedging at, so it is not assumed here — take the two live prices to the vig calculator and the figure comes straight out.

The second is the upside. A levelled position cannot win more than the locked figure. If the original bet was good when it was placed, the hedge sells the remainder of that value back at whatever the current price is. Sometimes that is a sensible trade and sometimes it is panic, and the arithmetic is identical in both cases.

There is also a case the tool states plainly: a hedge that locks a loss. If the price has not moved in your favour, levelling the position guarantees you end below where you started. The calculator shows a negative locked result rather than dressing it up, because that number is the entire decision.

Partial hedges and futures

Levelling is one option, not the only one. Leave the hedge stake blank and the calculator finds the level amount; enter any figure and it shows what both outcomes actually return at that size. A partial hedge keeps some of the upside and some of the risk, which is usually closer to what people want than a perfectly flat position.

The situation where this comes up most is a futures ticket. A long-odds bet placed months ago on a team that has now reached a final is worth far more than it cost, and the market price on the final is available immediately. Hedging converts a volatile ticket into a decided one, and the same two costs apply: the margin on the final, and the difference between the locked figure and the full payout.

One practical note about prices. The hedge is priced now, not when the original bet was placed, and the further the position has moved in your favour the better that price tends to be. This is why a hedge on a futures ticket often locks a meaningful gain while a hedge on a bet placed an hour ago rarely does. Run both through the calculator before deciding, because the difference between them is large and it is entirely visible in advance.

Finally, a boundary this site keeps. Hedging here is framed as reducing risk on a position you already hold, with the cost of doing so shown. It is not presented as a way to manufacture a return that cannot lose, and no page here treats the gap between two books as an income strategy.

One structural point sits behind all of it. A hedge is two bets into the same market at two different times, and the market charged its margin on both. That is why a perfectly levelled position is worth less than the two prices suggest at a glance, and why hedging a bet placed minutes ago almost always locks a loss: the price has not had time to move, so the only thing that changed is that you paid the margin twice. The calculator reports that as a negative locked result and does not hide it behind a reassuring word.