Maximum Position Size

Maximum position size is a risk rule that limits how many contracts (futures) or lots (forex) you can have open at once. This prevents traders from taking on excessive risk.

Typical Limits by Account Size (Futures)

| Account Size | Max Contracts |

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

| $25K | 2–4 |

| $50K | 5–10 |

| $100K | 10–14 |

| $150K | 14–17 |

| $200K–$300K | 20–35 |

How It's Measured

• Gross exposure: Total open contracts regardless of direction. If you're long 5 and short 3, your gross position is 8 contracts.
• Net exposure: Some firms count net direction only. Long 5 and short 3 = net 2.
• Per-instrument: Some firms limit contracts per instrument AND total across all instruments.

Micro vs Full Contracts

Most firms convert micro contracts at a ratio:

• 1 ES (E-mini S&P) = 10 MES (Micro E-mini)
• 1 NQ (E-mini NASDAQ) = 10 MNQ (Micro NASDAQ)

So a 10-contract limit means you can hold 10 ES OR 100 MES (or any equivalent combination).

Exceeding the Limit

Most platforms will block orders that would exceed the limit. However, if an order somehow gets through, it counts as a rule violation and can result in a breach.