GBP/USD Lot Size Calculator for RebelsFunding

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Instrument Guide

GBP/USD is one of the most volatile major pairs, making position sizing crucial for survival. The 110-pip average daily range means this pair can easily hit wide stops, so don't get complacent with your risk management. Unlike exotic pairs, GBP/USD has consistent $10 per pip per lot pricing, making calculations straightforward. The 110-pip ADR suggests stop losses between 30-80 pips are reasonable depending on your timeframe. Day traders might use 20-40 pips, while swing traders often need 60-100 pips to avoid getting stopped out by normal volatility. Worked example with $100k account: For 1% risk ($1,000) with a 50-pip stop, divide $1,000 by $500 (50 pips × $10) = 0.20 lots. At 2% risk ($2,000) with the same stop, you'd trade 0.40 lots. If using a tighter 25-pip stop at 1% risk, you could trade 0.40 lots since 25 pips × $10 × 0.40 = $100 risk per pip × 25 = $1,000 total risk. This pair suits prop trading well due to tight spreads and high liquidity, but the volatility demands respect. Cable can gap significantly during news releases, especially anything related to Bank of England policy or UK economic data. The overlap between London and New York sessions (8 AM - 12 PM EST) offers the best liquidity and tighter spreads. Be especially careful around UK GDP, inflation data, and BOE announcements. These can create 100+ pip moves in minutes, potentially blowing through stops. Size accordingly when trading through high-impact news.

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