NQ/MNQ decision system · whole contracts only

NQ & MNQ Position Sizing by Risk Budget

By Kyle ParrottUpdated August 25, 2026

Quantity is the output, not the starting preference. Define the price that invalidates the trade, translate the adverse path into ticks, add execution, gap and cost reserves, then take the floor of the usable risk budget divided by stressed dollars per contract. If the result is zero, the authorized position is zero.

Run the worked case Use the order worksheet

Contract rule: Whole-number floor
NQ tick: $5.00
MNQ tick: $0.50
Unknown input: Zero contracts

Lock the facts before the formula

Seven Inputs Must Exist Before Quantity

The arithmetic is simple; defining honest inputs is the work. NQ uses a $20 index multiplier and a 0.25-point outright tick worth $5. MNQ uses a $2 multiplier and the same 0.25-point price tick worth $0.50. Verify those mechanics, the exact expiry and current lifecycle on the canonical NQ/MNQ contract page.

Input	What to record	Fail-closed rule
Usable risk budget	Smaller of the trade-risk allowance, remaining daily loss allowance and any drawdown or account rule	Zero if no written, current allowance exists
Entry assumption	Planned price or conservative trigger-fill estimate	Recalculate if the actual fill moves materially
Structural invalidation	The price where the trade thesis is wrong, not the price that makes a preferred size fit	Skip if no objective invalidation exists
Exit slippage reserve	Adverse ticks supported by comparable product, session, order type and quantity records	Use a conservative band or do not trade when evidence is inadequate
Gap/event reserve	Additional adverse path for scheduled news, reopenings, halts, limits or thin conditions	Prohibit exposure when no defensible reserve can cover the event
Non-price cost reserve	Current round-trip commission, exchange, clearing and regulatory fees per contract	Do not borrow a stale amount or assume NQ and MNQ costs match
Independent caps	Margin capacity, portfolio concentration, correlation and liquidity/impact limits	Any failed or unknown cap returns zero

stop ticks = ceiling(abs(entry − invalidation) ÷ 0.25)whole adverse ticks

per-contract risk = (stop ticks + slippage ticks + gap ticks) × tick value + cost reservestressed dollars

risk size = floor(usable risk budget ÷ per-contract risk)0, 1, 2 … contracts

Hypothetical inputs, explicit arithmetic

A $425 Budget Produces Zero NQ or Seven MNQ

Assume a trader has $425 of usable risk after all account and daily-loss limits. The planned entry-to-invalidation distance is 22.50 points, or 90 ticks. The execution model adds 6 ticks of adverse exit slippage and a 14-tick gap reserve. Illustrative current-cost placeholders are $8 per NQ and $3 per MNQ round trip; they are assumptions to replace with the trader's actual schedule, not contract specifications.

Path before fees

90 structural ticks + 6 slippage ticks + 14 gap ticks = 110 adverse ticks. The price-risk path is identical for the example products; their dollar values and per-contract costs are not.

Risk budget: $425
Stop path: 90 ticks
Exit reserve: 6 ticks
Gap reserve: 14 ticks

Calculation	NQ	MNQ
Price risk per contract	110 × $5 = $550	110 × $0.50 = $55
Illustrative cost reserve	$8	$3
Total risk per contract	$550 + $8 = $558	$55 + $3 = $58
Raw quotient	$425 ÷ $558 = 0.761…	$425 ÷ $58 = 7.327…
Whole-contract floor	0 NQ	7 MNQ
Budgeted loss at that size	$0	7 × $58 = $406
Unused risk allowance	$425	$425 − $406 = $19

Never round 0.761 NQ up to one.

One NQ exceeds this example budget by $133. The unused $19 in the MNQ result is intentional; whole-contract floor math protects the cap.

A stop order is an instruction, not a fill guarantee

Size at the Approved Stress Band

The structural invalidation stays at 90 ticks in this illustration while fill and gap assumptions worsen. A model that selects seven MNQ from the baseline and ignores the stress row can exceed the $425 budget even though the stop price never changed.

Scenario	Total adverse ticks	NQ risk / floor size	MNQ risk / floor size	Loss if baseline 7 MNQ remains
Baseline: 90 + 6 + 14	110	$558 / 0	$58 / 7	$406
Worse fill: 90 + 12 + 24	126	$638 / 0	$66 / 6	$462
Event failure: 90 + 30 + 60	180	$908 / 0	$93 / 4	$651

The right row depends on the intended session, scheduled releases, price-limit state, order type, observed depth and the trader's evidence. If the approved policy requires the worse-fill row, this example authorizes six MNQ, not seven. If the event-failure path cannot be accepted, the event branch is flat.

Before entry

Measure comparable conditions

Separate NQ from MNQ and normal hours from opens, releases, halts and roll transitions.

At fill

Recalculate from reality

If entry slippage widens the path to invalidation, reduce or cancel before adding exposure.

After exit

Update the error band

Store planned versus realized spread, slippage, fees and gap so the reserve is testable.

Four permissions, one final minimum

Risk Size Does Not Authorize the Order by Itself

authorized size = min(risk size, current margin capacity, portfolio cap, liquidity cap)unknown or failed = zero

Cap	Question	Common hidden exposure
Risk	Does stressed dollars per contract fit the usable loss allowance?	Pending entries and protective-order replacement gaps
Margin	Do current exchange/broker requirements and a cash buffer fit this exact account and holding period?	Intraday-to-overnight changes, house add-ons and volatility increases
Portfolio	Does combined directional and sector exposure fit?	ES, QQQ, technology stocks, options and multiple NQ strategies moving together
Liquidity	Can the intended order and emergency exit pass current spread, depth and price-impact limits?	Ten MNQ has the gross exposure of one NQ but interacts with a different book and fee schedule

Margin is collateral, not maximum loss.

A broker's reduced intraday requirement does not prove that a stop will fill, cap a gap or define what the account can afford to lose. Requirements can change, and futures losses can exceed deposited funds. Verify live collateral separately on the NQ margin and buffer control page.

When the result does not fit

Change the Exposure, Not the Market Thesis

Result: NQ = 0

Evaluate MNQ independently

Recalculate with the MNQ tick value, actual MNQ fees, current book and its own margin requirement. Do not simply divide a preferred NQ size by ten.

Result: MNQ = 0

Wait or reject the trade

Do not move the invalidation closer solely to force one contract. A zero outcome means the current structure and budget do not fit.

Volatility expands

Rebuild every path input

Wider structural distance, slippage and gap reserves may reduce size even when the account balance is unchanged.

Risk budget increases

Keep the other caps intact

More risk allowance cannot override current margin, portfolio concentration, liquidity or event prohibitions.

Do not solve an oversized trade by omitting fees, using a hopeful fill, treating a stop-limit as guaranteed, assuming a market order has bounded slippage, or counting unrealized profit as permanent risk capacity.

One record before every order

Pre-Trade Sizing Worksheet

Identify the instrument.Record NQ or MNQ, exact quarterly expiry, account and current session.
Write the thesis and invalidation.The invalidation comes from market structure and must exist before quantity.
Set usable risk.Take the smallest applicable trade, daily, drawdown and account allowance after open and pending exposure.
Convert the price path.Divide adverse points by 0.25 and round outward to whole ticks.
Add reserves.Use product- and session-specific exit slippage, gap/event and current non-price costs.
Floor the quotient.Never round up a fractional futures contract.
Apply independent caps.Take the minimum of risk, margin, portfolio and liquidity sizes.
Read back the order.Product, expiry, side, type, quantity, limit/stop prices, time-in-force and protection must match the worksheet.

Current NQ/MNQ contract record and expiry verified.
Entry, invalidation and tick conversion written.
Scheduled-event and session branch selected.
Slippage, gap and cost evidence timestamped.
Whole-contract calculation independently checked.
Open positions and pending-order exposure included.
Current margin and cash buffer pass separately.
Emergency flatten and rejected-order steps known.

Final authorization

Submit only the smallest passing whole-contract quantity

A correct answer can be zero NQ and zero MNQ. No trade is owed to the plan.

Separate market loss from process failure

Close the Loop With an Incident Record

Outcome alone cannot validate sizing. A profitable trade can violate the risk system; a controlled loss can follow it exactly. Attribute only what the record supports.

Record	Planned	Realized	Attribution limit
Product / expiry / quantity	Authorized ticket	Confirmed fills and final flat quantity	Wrong-symbol or duplicate-order incidents are operational, not market variance
Entry to invalidation	Points and ticks	Distance after actual entry fill	Do not relabel a moved stop as original structure
Exit path	Slippage and gap bands	Trigger, fill, partials and timestamps	One trade does not establish a stable slippage distribution
Costs	Per-contract reserve	Commission, exchange, clearing and regulatory fees	Gross P&L does not test the net model
Risk controls	All four caps pass	Any alert, reject, override or margin change	Broker acceptance does not prove policy compliance

Open a formal incident review for wrong product or expiry, quantity mismatch, missing or rejected protection, unmodeled event exposure, cap override, unexplained fill variance or inability to prove the account flat. Correct the control before increasing size.

Sources and sizing-control disclosure — reviewed August 28, 2026

CME Rulebook Chapter 359: E-mini Nasdaq-100 Futures for the NQ multiplier and price increment used in the calculations.
CME Rulebook Chapter 361: Micro E-mini Nasdaq-100 Futures for the MNQ multiplier and price increment.
CME Performance Bonds/Margins FAQ for current-variable collateral and the initial/maintenance distinction.
CME Product Margins for current official margin resources rather than a frozen dollar figure.
CME Liquidity Tool methodology for spread, depth and cost-to-trade measurement concepts.
CFTC futures risk disclosure for stop-order, margin-call and loss-beyond-deposit risk.

Sources were reviewed August 28, 2026. Contract arithmetic is grounded in the cited CME rules; cost reserves, stress bands and account limits are hypothetical workflow inputs that must be replaced with current trader-specific evidence. Examples are educational calculations, not forecasts, recommendations or reported trades.