When is NQ contract rollover? Dates, volume roll and backtest gaps

When is the NQ contract rollover?

When is NQ contract rollover? Four times a year. The E-mini Nasdaq-100 future (NQ) trades on a quarterly cycle: March (H), June (M), September (U) and December (Z). Each contract stops trading on the third Friday of its month, and most volume moves to the next contract about a week before that Friday.

The two dates are different, and the difference matters. The expiration date is the exchange rule: trading in an NQ contract ends at 9:30 a.m. Eastern Time on the third Friday of the contract month. The practical roll date is when traders actually move: in the week before expiration, the expiring contract gets thin and the next contract takes over. If you wait for the Friday, you are trading the quieter contract for several days. The contract size of $20 × index and the tick of 0.25 points ($5.00) stay the same across all four contracts, which you can check in the free futures contract calculator. Exchanges can change these values, so confirm them on the exchange's contract page before you trade.

The Micro contract (MNQ) follows the same cycle and the same expiration, so the roll plan below applies to both; the specs of each are compared in NQ and MNQ futures: Nasdaq-100 specs, sessions and backtest costs.

When should I roll NQ futures in practice?

Roll on the day the next contract's daily volume passes the expiring contract's volume, and do the exit and the entry in the same session. Volume is the fairest judge because it tells you where the fills are. The calendar tells you roughly which week; the chart tells you which day.

1. From the Monday of roll week, put both contracts on one screen and compare the previous day's volume.
2. When the next contract's volume is higher, that is your roll day. In most quarters this falls a few days before the third Friday.
3. Close the position in the old contract and open the same size in the new one in the same session, so you are never flat and never doubled by mistake.
4. Move stop and target orders to the new contract and adjust the price levels by the gap between the two contracts, which the next section explains.

A strategy that holds positions for weeks will meet this situation every quarter, and the strategy types in futures algo trading strategies: 5 types and how to backtest each that hold overnight are the ones that need a written roll rule.

How do rollovers affect a backtest?

A backtest on a continuous NQ series contains a price jump at every roll, and if that jump is left in, the equity curve shows profit or loss that no trader ever had. A continuous contract is a single price history built by joining the quarterly contracts end to end. The old and new contract trade at different prices on the roll day, because the new one carries about three more months of financing cost minus expected dividends. A roll gap is that difference, appearing as a jump at the join.

Back-adjusting is the method that shifts all earlier prices by the gap so the join is smooth. The alternative is to keep the raw join and tell the backtest that the jump is not a trade. Either way is honest; leaving the jump in is not.

How much this matters depends on how often a strategy is in a position at the roll. The run below is an example from AlphaPrime (Valynox): NQ daily bars from 2019-01-02 to 2025-06-30, long and short, one contract, with a moving-average rule as the only entry and exit. It is a stand-in rule, not a rollover rule, chosen to show a position that lives through many rolls. The candidate is the one the search kept out of about a thousand it tried (1,024), for its return against its drawdown; picking the best one after the fact flatters the result, and nothing here says the rule earned that money or that a reader can expect it.

Time in market of 91.75 percent across 26 quarterly rolls means almost every roll happened with a position open. On a series with raw joins, each of those 26 gaps would have gone straight into the result. The series you load decides this, so check the join before the first run; futures backtesting done right: specs, rollover, tick value, costs covers how to inspect it. Once the data is sound, backtesting in AlphaPrime runs every candidate on your own bar data with fees, slippage and next-bar execution, so a search over a long NQ history is already judged after normal trade costs; the roll costs of the next section are the part you add yourself.

What does a roll cost, and how do you put it in the backtest?

One roll costs an extra round trip of commission and slippage plus the spread between the two contracts, and a strategy that holds all year pays it four times. A smooth back-adjusted series hides this, because the join looks like one bar following another. The real trader paid to exit and to enter.

Two ways to charge it in a backtest:

1. Add the roll cost to the per-trade cost. Count how many rolls an average trade crosses, multiply by the roll cost, and add that to the slippage setting. Simple, and it keeps the ranking of candidates honest during the search.
2. Charge each roll date directly if your platform can place a forced exit and re-entry on the roll day. More exact, more work.

Set these costs together with the session and data settings listed in ES and NQ futures backtesting: five things to set first, before the first run rather than after. Then rerun your best NQ candidate with roll costs doubled: a strategy that holds for weeks should barely move, while one that only survived because of a smooth join will show it.