Cable
Quick Answer
Cable is a forex-market nickname for the GBP/USD currency pair, representing the exchange rate between the British pound sterling and the US dollar. GBP is the base currency and USD is the quote currency, so the price shows how many US dollars are required to buy one British pound.
How does Cable work?
Cable is simply another name traders use for GBP/USD.
A GBP/USD quotation shows the value of one British pound in US dollars.
For example:
GBP/USD = 1.3000
means:
£1 = $1.30
Because GBP appears first, it is the base currency. USD appears second and is the quote currency.
If Cable rises from:
1.3000 → 1.3200
the British pound has strengthened relative to the US dollar, meaning more dollars are required to buy one pound.
If Cable falls from:
1.3000 → 1.2800
the pound has weakened relative to the dollar.
CME Group uses “cable” as trader jargon for the GBP/USD exchange rate.
Why is GBP/USD called Cable?
The nickname has historical origins.
During the nineteenth century, exchange-rate information between London and New York began travelling across the Atlantic using submarine telegraph cables.
Because sterling-dollar quotations were transmitted through this communications link, market participants began referring to the exchange rate as “Cable.”
The communication technology has changed significantly since then, but the nickname survived and remains part of foreign-exchange terminology today.
Key features of Cable
Several points are important when understanding the term:
Cable means GBP/USD: It refers specifically to the British pound against the US dollar.
GBP is the base currency: One unit of sterling is valued in US dollars.
USD is the quote currency: The quoted price represents the number of dollars per pound.
A rising Cable generally means GBP is strengthening relative to USD.
A falling Cable generally means GBP is weakening relative to USD.
It is informal market terminology: “Cable” is trader jargon rather than a separate currency or financial instrument.
Its name is historical: The nickname relates to the transatlantic communications cables historically used between London and New York.
Simple Cable example
Suppose GBP/USD is quoted at:
1.2500
This means:
£1 = $1.25
Now suppose Cable rises to:
1.2750
The movement is:
1.2750 − 1.2500 = 0.0250
For GBP/USD, that corresponds to:
250 pips
The higher exchange rate means the pound has appreciated against the US dollar.
Now suppose the pair instead falls to:
1.2300
Fewer US dollars are required to buy one pound, indicating that sterling has weakened relative to the dollar.
These examples are illustrative only and do not represent actual FxGrow market prices or trading recommendations.
What can affect Cable?
GBP/USD can respond to factors affecting either the British pound or the US dollar.
These may include:
Bank of England monetary-policy expectations;
US Federal Reserve monetary-policy expectations;
UK and US inflation data;
economic growth expectations;
employment data;
political and fiscal developments;
changes in global risk sentiment;
broader movements in the US dollar.
CME Group notes that GBP/USD can be influenced by economic growth, monetary-policy expectations, trade and fiscal conditions, among other macroeconomic factors.
The relative effect matters. Strong UK data does not necessarily cause Cable to rise if developments supporting the US dollar are even stronger.
Risks, limitations and common misconceptions
A common misconception is that Cable is a separate currency.
It is not.
Cable is simply a market nickname for the GBP/USD exchange rate.
Another misconception is that Cable means the British pound in every context. Traders may occasionally use the nickname loosely when discussing sterling, but its more precise forex meaning is the pound-dollar currency pair.
Traders should also avoid interpreting a rising GBP/USD price as meaning both currencies are becoming stronger. Currency pairs measure one currency relative to another. Cable can rise because GBP strengthens, USD weakens, or a combination of both.
Finally, historical relationships and economic indicators do not guarantee how GBP/USD will move. Exchange rates can react rapidly to new information, changing interest-rate expectations, political developments and market sentiment.