Micro vs Mini Futures: MES vs ES and MNQ vs NQ Explained
How Micro E-mini and E-mini index futures differ: the 1-to-10 size ratio, tick values, finer position sizing, prop firm contract limits and liquidity considerations.
Anyone getting into equity index futures quickly runs into two similar names for the same index: ES and MES, or NQ and MNQ. The difference is simple on paper, but it has big consequences for risk management, position sizing and staying within prop firm rules. This article explains how they differ and when each one fits.
E-mini and Micro E-mini in brief
E-mini contracts were launched as a smaller version of the original index futures, which were too large for most individual traders. Over time they became the main and most liquid contracts on US stock indexes. CME Group later added Micro E-mini contracts, one tenth the size of the E-mini.
Both contracts track exactly the same index, trade during the same hours, expire on the same quarterly cycle and move almost identically in price. The real difference is size: how many dollars each point is worth. If ticks and multipliers are still new to you, start with futures contracts basics.
The 1-to-10 ratio
Here is the comparison for the two most popular indexes:
| Index | Mini contract | Point value | Micro contract | Point value |
|---|---|---|---|---|
| S&P 500 | ES | $50 | MES | $5 |
| Nasdaq-100 | NQ | $20 | MNQ | $2 |
All four contracts have a tick size of 0.25 point, so the tick values are:
- ES: $12.50 per tick
- MES: $1.25 per tick
- NQ: $5.00 per tick
- MNQ: $0.50 per tick
In other words, ten MES contracts are economically about equal to one ES contract, and ten MNQ contracts to one NQ. A hypothetical example: a 20-point move in the Nasdaq-100 is worth $400 on one NQ contract and $40 on one MNQ contract.
Why micros help with position sizing
The big advantage of micros is resolution. With mini contracts, the smallest step in position size is one whole contract, and that is a large step. Micros let you fine-tune exposure ten times more precisely.
A hypothetical example: a trader decides he is willing to lose at most $150 on a trade, and his stop is 25 points from entry in NQ. On one NQ contract, 25 points is $500, well over budget. On MNQ, each contract risks $50 at the same stop, so three contracts fit the $150 budget exactly.
Micros are also useful for scaling out. Holding several micro contracts lets you close part of the position at a first target and keep the rest for a continuation move, without increasing overall risk. Sizing approaches are covered in position sizing methods.
Micros and prop firm limits
Prop firm programs usually set a maximum number of contracts per account, and sometimes define a conversion between minis and micros (for example, one mini counting as a certain number of micros). The exact rules differ between firms and change over time, so check them in the firm's official help center.
Apart from contract limits, the drawdown limit is a central consideration. When the allowed loss room in an account is limited, a normal swing on a single mini contract can consume a large share of it. Micros let you trade the same index with smaller dollar swings and match risk precisely to your distance from the limit.
Liquidity and costs
Mini contracts are among the most liquid futures in the world, with a very deep order book. Micros are also highly liquid during active hours, but their depth at each price level is smaller. Most individual traders will not notice, but with large orders or in quiet hours it is worth paying attention.
Another point is fees. Commissions and exchange fees are usually charged per contract. Since it takes ten micros to match the exposure of one mini, the total cost for the same exposure can be higher with micros. Check your broker's fee structure and calculate cost per point. Slippage and execution costs have their own article: slippage and execution costs.
When to choose which
Questions that help decide:
- How much are you willing to risk per trade? If your strategy's natural stop on a mini exceeds your budget, micros are the answer.
- Do you need partial exits? Several micros give flexibility a single mini cannot.
- How large is the account or the drawdown room? A relatively small account usually suits micros better.
- What is the cost per point? At larger exposures, minis may be more fee-efficient.
- What are the account's rules? Check contract limits and any conversion ratio at your prop firm.
Common mistakes
- Mixing up symbols in an alert or order and sending NQ instead of MNQ. That mistake multiplies exposure by ten.
- Assuming point value is the same across contracts on different indexes. ES and NQ differ, and so do their micros.
- Adding more and more micros "because they are small" until total exposure equals several minis.
- Forgetting fees when planning.
Key takeaways
- Micro E-mini contracts are one tenth the size of E-minis: MES is $5 per point versus $50 for ES, and MNQ is $2 per point versus $20 for NQ.
- The tick size is the same (0.25), so tick value is also one tenth.
- Micros allow precise position sizing, partial exits and a better fit with drawdown limits.
- Minis are more liquid and can be cheaper per point at larger exposures.
- Prop firm contract rules change, so always check the official source.
In WeCore you can set risk controls such as a maximum number of contracts per account, so even if an alert arrives with the wrong quantity, the system will not exceed the limit you set. It is worth testing those settings in simulation mode before trading live.