USD/JPY Lot Size Calculator for FundedX

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Firm Rules Summary

Instrument Guide

USD/JPY position sizing requires careful attention to its unique pip value and volatility characteristics. Unlike EUR/USD where pip values are clean $10 per lot, USD/JPY's $9.1 pip value reflects the yen's lower denomination, making position calculations slightly more complex but still straightforward. The 90-pip average daily range is substantial, offering plenty of movement for intraday strategies while demanding respect for stop loss placement. This ADR suggests 20-40 pip stops for scalping, 40-70 pips for day trading, and 70+ pips for swing positions. Tighter stops often get stopped out by normal market noise, while overly wide stops reduce your position size unnecessarily. For a worked example on a $100,000 FundedX account: At 1% risk ($1,000) with a 35-pip stop, divide $1,000 by $318.5 (35 pips × $9.1) to get 0.314 lots. At 2% risk ($2,000) with the same stop, you'd trade 0.628 lots. These are reasonable sizes that won't trigger margin issues while respecting the firm's 3% daily loss limit. USD/JPY suits FundedX's rules exceptionally well. The generous 90-pip ADR provides multiple profit-taking opportunities before hitting the 5% target, while the substantial movement allows for meaningful profits without excessive leverage. The pair's liquidity ensures tight spreads during major sessions, maximizing your edge. Key considerations: Tokyo session often shows ranging behavior perfect for mean reversion strategies, while London/NY overlap delivers trending moves. The pair responds strongly to interest rate differentials and risk sentiment, making it ideal for both technical and fundamental analysis approaches.

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