Futures margin confuses every new trader for the same reason: the word margin means something completely different here than it does in stocks. In stocks, margin is borrowed money you pay interest on. In futures, margin is a good-faith deposit: the amount your broker holds while you control the contract. Nothing is borrowed, and there is no interest. But there are two different margin numbers, and mixing them up is how accounts get blown on day one.
Overnight (initial) margin is set by the exchange and it is the real cost of holding a position past the session close: for NQ it runs in the tens of thousands of dollars per contract, adjusted as volatility changes. Day trading (intraday) margin is set by your broker and only applies while the session is open: many futures brokers let you day trade NQ for a few thousand dollars per contract, and some go far lower. Hold into the close without overnight margin and the broker liquidates you automatically, at whatever price the market is offering.
Here is the trap. A broker offering $1,000 day margin on a contract worth hundreds of thousands of dollars is not telling you the trade is safe: it is handing you maximum leverage and letting the market educate you. Margin tells you the minimum deposit. Risk is decided by point value times stop distance: NQ moves $20 per point and MNQ moves $2, so a routine 30-point stop is $600 or $60 depending on the contract, no matter what the margin was. Your position size should come from the sizing formula and your account, never from what the broker will technically allow.
Futures margin is enforced in real time. If your account equity drops below the maintenance requirement while you hold a position, retail futures brokers do not call you: their risk engine flattens you, often at the worst price of the move. This is also why sizing to the margin minimum is fatal: one normal NQ rotation against a maxed-out account triggers liquidation before your trade idea even gets to be wrong.
Margin decides what you are allowed to trade. Levels decide what is worth trading: ours are free three times every trading day on the NQ levels page, with the full profile in Pro.
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