Fiber
Forex slang for the EUR/USD currency pair, the most traded pair in the world.
Fiber is the modern nickname for EUR/USD, the world's most traded currency pair. It references the fibre-optic cables that transmit prices today, contrasting with the older 'Cable' for GBP/USD.
Fiber is a modern nickname for EUR/USD, the world's most traded currency pair. The name references fiber optic cables used for modern price transmission, contrasting with the older "Cable" (GBP/USD) nickname from telegraph days.
How It Works
- "Buying Fiber" = going long EUR/USD
- "Selling Fiber" = going short EUR/USD
- Most liquid currency pair - tightest spreads
- Accounts for ~24% of daily forex volume
Trading Tips
Most active during London-New York overlap
Sensitive to ECB and Fed policy decisions
Lower volatility than Cable typically
Fiber Example
Say fiber, EUR/USD, trades 1.0850 during London morning. A trader saying fiber is heavy means euro selling pressure: the pair softens toward 1.0830 while cable often follows, because dollar strength hits both.
How Traders Use Fiber
Learn fiber first among nicknames since it is the pair you will trade most. Quote it in pips without thinking, and remember its habits: tightest spreads, cleanest reaction to US data, deepest liquidity at the London-New York overlap.
Related Terms
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