Strategies

Hedging in Trading: How to Protect One Trade With Another Position

Astron Team · 09/24/2026 · 4 min read

Hedge is a word that comes up all the time in finance and tends to be treated as something complicated, reserved for big funds. In practice, the logic is simple: instead of betting everything on a single direction, you open a second position that protects part of the result if the market moves against the first one. The goal isn't to profit twice — it's to reduce the size of the damage when the market reading turns out wrong.

This idea applies to stocks, currencies, commodities, and also very short-term trades. The common thread is always the same: buying some form of insurance, even if it costs part of the original trade's potential profit.

The principle behind hedging

A classic hedge combines two positions with opposite results on the same asset, or on assets that move in a similar way. If the first position bets on a currency rising and the second bets on the same currency falling, the final result depends on how much the price moved and the relative size of each position — not simply on who won and who lost.

There are two common ways to set up this protection. The first is the simultaneous hedge: opening both sides at practically the same time, usually because the market reading is split between two likely scenarios. The second is the adjustment hedge: opening the second position after the first is already at a loss, to cap a maximum loss and keep the result from worsening if the price keeps moving in the opposite direction.

An example with round numbers

Suppose a R$ 200.00 trade betting on the dollar rising against the real, with an 85% payout if correct and a 30-minute expiration. With 10 minutes left, economic news changes the scenario and the price starts moving against the position. Instead of simply waiting for the result, you open a second R$ 100.00 trade betting on the dollar falling, with the same 85% payout.

There are two possible outcomes. If the dollar closes higher, the first trade pays R$ 170.00 in profit (85% of R$ 200.00) and the second loses the R$ 100.00 invested — a net result of R$ 70.00 in gain. If the dollar closes lower, the first trade loses the R$ 200.00 and the second pays R$ 85.00 in profit (85% of R$ 100.00) — a net result of R$ 115.00 in loss. Compared with doing nothing — losing the full R$ 200.00 if the dollar fell —, the hedge reduced the loss by R$ 85.00 in the bad scenario, at the cost of reducing the gain in the good scenario.

When it makes sense to use a hedge

• When relevant news comes up in the middle of an already open trade and the remaining time doesn't allow closing the position safely.
• When the technical reading has split between two scenarios and reducing total exposure matters more than trying to nail the exact direction.
• When the goal is to protect a winning streak for the day, accepting a smaller result instead of risking giving it all back on a single trade.

When the hedge hurts more than it helps

Hedging has a cost — it usually reduces the possible profit, because the two positions generally don't share the same percentage payout in every scenario. Using a hedge every time a trade starts going badly, out of reflex, is different from using a hedge as part of a plan defined before entering the market. In the first case, the hedge becomes a way of denying the loss; in the second, it's a risk management tool. The difference lies in deciding the criteria for using it before trading, not in the heat of the moment.

How to test before applying it day to day

Before using a hedge with real money, it's worth simulating the four possible scenarios of a trade — small rise, big rise, small drop, big drop — and calculating the net result of each one, with and without the second position. Tools like Astron show each asset's payout before the trade is opened, which makes it easier to do this math in advance, instead of deciding in the middle of the trade under pressure. Hedging doesn't eliminate risk: it redistributes risk across scenarios, and it's up to the trader to decide whether that trade-off makes sense for their capital and their plan.