Lot

In forex trading, a "lot" is the standardized quantity of currency units per trade. Understanding lot sizes is essential for proper position sizing and risk management.

Lot Sizes

| Lot Type | Units | Typical Pip Value (USD pairs) |

|----------|-------|------------------------------|

| Standard | 100,000 | $10 per pip |

| Mini | 10,000 | $1 per pip |

| Micro | 1,000 | $0.10 per pip |

| Nano | 100 | $0.01 per pip |

Lots in Futures

Futures don't use "lots" — they use contracts. Each contract has a fixed specification:

• 1 ES (S&P 500 E-mini) = $50 × index value
• 1 MES (Micro E-mini S&P) = $5 × index value
• 1 NQ (NASDAQ E-mini) = $20 × index value

Lot Size and Prop Firm Rules

Prop firms specify maximum lot sizes based on account size:

| Account Size | Typical Max Lots (Forex) |

|-------------|-------------------------|

| $10K | 2–5 lots |

| $50K | 10–20 lots |

| $100K | 20–50 lots |

| $200K | 40–100 lots |

Calculating Position Size in Lots

Lots = Dollar Risk / (Stop Loss in Pips × Pip Value per Standard Lot)

Example: Risk $200, stop loss 20 pips

• Lots = $200 / (20 × $10) = 1.0 standard lot

Common Mistake

Trading full standard lots on a small account. On a $10K account, 1 standard lot means a 20-pip stop loss risks 2% ($200). That leaves very little room for multiple trades or a bad day.