MES vs MNQ: Position Sizing Explained
SEP 18
2026
Reviewed September 18, 2026. Examples are USD and exclude fees unless stated.
MES and MNQ are both Micro E-mini equity index futures, but the same point stop does not create the same dollar risk. One MES contract moves $5 per index point; one MNQ contract moves $2 per index point. Both use a 0.25-point minimum tick, producing $1.25 per MES tick and $0.50 per MNQ tick. CME MES specifications, CME MNQ specifications.
MES and MNQ contract values
A point measures the index price change. A tick is its minimum price increment. Contract count multiplies the dollar exposure. These are exchange contract specifications; a prop firm's contract ceilings, permitted products and scaling rules are separate.
Stop-loss risk by contract
Gross planned risk = stop distance in points × dollars per point × contracts. A stop order does not guarantee the planned exit price. Slippage, gaps and commissions can increase the realized loss.
Compare equal dollar risk
A ten-point MES stop and a 25-point MNQ stop both represent $50 gross planned risk per contract. That does not make the setups equally likely to succeed. Index volatility, liquidity, time of day and strategy structure determine whether either stop distance is appropriate. Choose a stop using the trading setup, then size the position to fit the budget.
Size from a fixed dollar budget
Use: maximum contracts = round down [risk budget ÷ estimated all-in risk per contract]. Then apply the firm's instrument and account limits. If the result is zero, the proposed trade does not fit the budget at one contract.
The $3 allowance is an invented planning input for the calculation, not a broker fee quote. Replace it with the actual round-turn commission and an appropriate execution allowance. Rounding up would exceed the selected budget.
Check remaining prop-account headroom
The nominal account balance is not the loss budget. Remaining headroom is the account equity used for enforcement minus the currently enforced loss floor. Your own safety reserve should also stay outside the planned trade budget.
The reserve is a personal planning assumption, not a published firm rule. For an intraday trailing account, the floor may rise during a winning open trade. Re-read the dashboard before the next order rather than assuming the opening allowance remains available.
Contract limits are ceilings
If a program allows 30 micros, that does not establish that 30 micros fit a particular stop. Thirty MNQ contracts with a 25-point stop create $1,500 gross planned risk before fees. A large contract ceiling can therefore consume a small drawdown allowance rapidly.
Multiple positions combine risk
Two positions that each fit a $100 budget can still create a combined $200 planned loss. MES and MNQ exposures can move together. Track total open stop risk, pending orders and copier exposure across accounts rather than assessing each order in isolation.
Pre-order worksheet
Compare account rules and read the drawdown examples guide alongside the sizing calculation. Tick values are stable contract mechanics; permitted instruments, commissions and account conditions must be checked for the exact program.