Hedging and “Locking” on Forex: An Opposite Position That Hedges Nothing

A “lock”, i.e. hedging in a forex or CFD broker account, means opening a position opposite to one that's already open on the same instrument. Net exposure is then zero, but the loss doesn't go away: it's merely frozen, while spread and swap costs keep growing.

What it is

Platforms such as MetaTrader let “hedging” accounts hold a buy and a sell on the same instrument at the same time. People do this when a position goes against them and they don't want to “realise the loss”: they open a lock and wait for the market to “clarify the situation”, then take off one leg.

Mathematically, two opposite positions of the same size are the same as no position, only more expensive: you pay the spread when opening and closing each leg, and swap for every night. On a futures exchange, opposite positions in the same contract simply net off, and in the US the rules for forex brokers (the FIFO rule) effectively prohibit this kind of hedging.

How people use it

• a lock instead of closing a losing position
• “lock strategies” and elaborate grids of buys and sells
• combining a lock with martingale or a grid
• EA bots that open positions in both directions

What the research and evidence say

It's a matter of arithmetic, not research: two opposite positions add up to zero exposure, so a lock doesn't change the market result compared with closing the position and reopening it later – it just adds costs. Real hedging in finance means protecting an existing risk with a different, related instrument (e.g. a stock portfolio with an index future), not an opposite position in the same market at the same broker.

Weaknesses

• the loss is frozen, not removed
• spread and swap costs grow over time
• it postpones the decision and reinforces the reluctance to take a loss
• two legs to “take off” at the right moment instead of one decision

What order flow shows

Order flow won't fix a lock, because the problem isn't in the data but in the decision. It helps earlier, though: if you know in advance which market reaction invalidates your scenario (e.g. price is accepted on the other side of a level and trading builds there), you exit according to plan instead of building an opposite position. On CME futures a lock doesn't even exist: there's one position, net.

How to use it sensibly

• closing the position and reopening it gives the same exposure more cheaply
• make the exit decision before the entry, in your plan
• if you hedge, hedge a real risk with a different instrument, not the same position in reverse

Related

• Glossary: Spread
• Glossary: Commissions and fees
• Glossary: Margin and leverage
• Glossary: Loss aversion
• Glossary: Sunk cost fallacy
• Atlas of biases: Loss aversion
• Atlas of biases: The sunk cost fallacy
• Atlas of biases: Mental accounting
• Order flow: Exchange or Broker: CME Futures vs CFDs and Forex with a Market Maker
• Also under the microscope: Scalping
• Also under the microscope: Day trading
• Also under the microscope: Swing trading

Frequently asked questions

Educational content, not investment advice. No signals, entries, stops or position sizes.