DISCLAIMER: Nothing in this article constitutes financial or trading advice. All content is educational and informational only, as outlined in each client's agreement with Vector Algorithmics. Any modification of settings or parameters is made at the client's sole discretion and responsibility.

Understanding Mini vs. Micro Futures Contracts

In this lesson, you’ll learn the difference between mini and micro contracts — two standard sizes used when trading futures within NinjaTrader and algorithmic systems. Even if you’re completely new to futures, this guide will help you quickly understand how they work and why we trade micros by default.

Key Concept: Contract Size

Every futures trade represents a contract — an agreement to buy or sell a specific market (such as NASDAQ, S&P 500, or Gold) at a future date.
Contract size determines how much exposure and risk each trade carries.

In simple terms:
Ten micro contracts = one mini contract .

Common Futures Symbols We Trade

You’ll see these tickers frequently in your settings spreadsheet or inside NinjaTrader chart windows.

Example: Tick Values in Action

• 1 ES (E‑Mini S&P 500) → moves $12.50 for each tick.
• 1 MES (Micro S&P 500) → moves $1.25 for each tick .
• Therefore 10 MES contracts = 1 ES contract in price movement and margin exposure.

So, when a trading strategy gains 20 ticks:

• 1 Mini = $250 profit (20 × $12.50)
• 1 Micro = $25 profit (20 × $1.25)

This 1/10 ratio makes Micros ideal for traders who prefer smaller risk per trade .

Why We Prefer Micros for Our Algos

• Lower risk exposure: Micros reduce drawdowns and help stay within prop‑firm daily loss limits.
• Greater control: You can scale position size (e.g., 2 micros = 20 % of a Mini).
• Accessible entry: Much lower margin requirements — about 10 % of the Mini’s capital need .
• Better for performance data: Most results spreadsheets use Mini values, but you can divide by 10 to estimate Micro results.

Quick Math Guide

If a strategy shows:

• Average win/loss per Mini = $400
• Using 2 Micros = 20 % of full size → approximately ± $80 per trade

This linear ratio helps you scale results confidently without over‑leveraging smaller prop accounts .

Everyday Analogy

Think of a Mini contract like one full‑size candy bar 🍫.
Break it into 10 pieces — each piece is a Micro.
All 10 together add up to the same total, but you can trade, test, or “eat” smaller bites safely instead of committing to the full bar.

Quick Reference Table

Summary

• One Micro = 1/10 of a Mini.
• We always trade Micros (MNQ, MES, MYM, etc.) for safety and flexibility.
• Ten Micros = One Mini in risk and reward potential.
• All spreadsheets and results use Mini metrics — divide by 10 when assessing Micro performance.

By the end of this section, you’ll fully understand how contract size impacts your profits, risk tolerance, and algo performance. Rewatch this video anytime if these terms still feel new — it will click faster the second time.