The nickname comes from the transatlantic telegraph cable that carried the sterling dollar rate between London and New York in the nineteenth century. The behaviour has not changed as much as the technology. GBPUSD is still a London instrument with a New York second act, and the hours in between are where most of the damage gets done to traders who trade it the way they trade the euro.
The practical characteristic is range. On a typical day cable covers a wider distance than EURUSD, and its intraday swings are less inclined to respect the neat pullbacks that make the euro pleasant to trade. That is a function of a smaller pool of liquidity relative to the dollar euro axis, plus a currency whose domestic data set moves it hard.
When cable actually moves
The instrument wakes up at the London open. UK data releases land in the early London morning, and the pair often sets its high or low of the day within the first two hours. The second burst arrives with US data in the New York morning, when both sides of the pair have something to react to at once. The overlap is the busiest window, as set out in the trading sessions guide.
The Asian session is where cable misleads people. Range compresses, spreads widen relative to the move available, and a breakout of the Asian range means far less than the same pattern on a yen pair. Traders using the London breakout approach are exploiting exactly this: a quiet overnight box followed by a session that has genuine participation behind it.
What drives the pound side
Bank of England policy is the anchor. Rate decisions, the vote split in the minutes and the Governor's language move sterling more than the headline decision itself, because the market prices the decision in advance and trades the surprise in the guidance. A seven to two vote where six to three was expected is a bigger event than a hold that everyone forecast. The mechanism is the same one described in central banks and forex.
UK CPI is the highest impact data release in the calendar for the pound, followed by the labour market report and monthly GDP. Retail sales and PMI matter less than they used to but still produce spikes. On the dollar side, cable inherits everything that moves the greenback, so non-farm payrolls and US inflation prints hit the pair from the other direction.
Political risk deserves its own mention. Sterling has a history of repricing sharply on fiscal and political news, and those moves arrive outside the economic calendar. A trader holding cable through a budget statement or an unscheduled political event is taking a risk that no stop distance calculation covers, because gaps do not respect stops.
The cost of trading it
Cable is a major pair and spreads are tight in normal conditions, though generally a touch wider than EURUSD at the same broker. Two moments break that. The first is the daily rollover window, when liquidity thins and spreads widen for a few minutes, covered in spread widening at rollover. The second is the seconds around a data release, when the spread can multiply and a market order fills far from where the trader clicked.
Carry is the other running cost. The overnight financing on a GBPUSD position depends on the rate differential between the two currencies and on the broker's markup. When rates on the two sides are close, the swap is a small drag either way. When they diverge, holding one direction for weeks becomes materially more expensive than the other, which is the point of checking swap rates before a multi week hold rather than after.
Sizing for the range
This is where the guide earns its place. If a trader uses a fixed stop of a given number of pips because it works on EURUSD, applying the same number to cable puts the stop inside normal noise. The correct method is to set stop distance from the instrument's own volatility, measured with something like average true range, then derive lot size from the account risk. The arithmetic is in lots and position sizes and the discipline behind it in risk management rules.
The consequence traders miss: a wider stop on cable at the same risk in currency terms means a smaller position, so the same winning move produces fewer units of profit than it would on a tighter instrument. That is not a flaw to be engineered away by tightening the stop. It is the price of trading a wider instrument, and traders who refuse to pay it get stopped out of correct ideas.
A workable frame
Read direction on the daily and four hour charts, where cable's trends are cleaner than its intraday behaviour suggests. Mark the levels that actually held, not every wick. Wait for the London open to give the day a direction, and treat the first move after a UK data release with suspicion, because the initial spike frequently reverses once the detail is read. Avoid holding through scheduled central bank events unless the position is sized for a gap.
None of that is a system, and cable does not reward one. Leveraged currency trading carries a high risk of loss, and a pair with this much daily range punishes oversizing faster than most. The traders who last on it are the ones who accepted the smaller position first.
"Cable will give you the same setup as EURUSD and then run twice as far past your stop on the way there. Size for the range, not for the habit."
— Alex Onta, Executive Director, SINGUARD
Key Takeaways
- GBPUSD typically covers more daily range than EURUSD, so stop distance and lot size have to be recalculated rather than copied across.
- The pair sets most of its daily high or low during the London morning and the London to New York overlap.
- UK inflation, the Bank of England vote split and unscheduled political news are the biggest sterling side movers.
- A wider stop at the same currency risk means a smaller position, which is the cost of the range rather than a problem to fix.
Frequently Asked Questions
Why is GBPUSD called cable?
The name goes back to the transatlantic telegraph cable that carried the sterling dollar exchange rate between London and New York in the nineteenth century. The nickname stuck long after the technology was replaced.
Is GBPUSD good for beginners?
It is a major pair with tight spreads and deep liquidity, which helps, but its daily range is larger than EURUSD and it reacts sharply to UK political and policy news. A beginner trading it should size positions from the pair's own volatility rather than reusing a fixed pip stop from another pair.
What is the best time to trade GBPUSD?
The London morning and the London to New York overlap carry the most participation and the clearest moves. The Asian session is usually quiet for cable, with range compressed relative to the spread.
About the Author
Alex Onta is an Executive Director at SINGUARD. He built eTrader, the terminal, the mobile apps, eTrader Broker, Copytrading, Business and Community, along with the worldwide clustered-server infrastructure it all runs on, with his brother Roman Onta helping on the design, and he leads that division today. Together with Roman he builds the Prop Firm CRM, the Broker CRM, Scalegram and CopySignals, and the two of them carry worldwide compliance, payment processing and international business structuring side by side. He lives and works in Dubai for most of the year. Meet the executive duo leading Singuard's five divisions.