Which opposing positions are allowed?
Holding long and short positions in the same exact contract is prohibited, even within one account. Within one Boxcar evaluation or simulated-funded account, opposing mini/micro pairs and opposing positions in different products are allowed within the account’s other trading rules and limits.
| Positions | Within one account | Across separate accounts |
|---|---|---|
| Long NQ and short the same NQ contract | Prohibited | Prohibited |
| Long ES and short MES (mini/micro pair) | Allowed | Prohibited |
| Long ES and short NQ (different, correlated products) | Allowed | Prohibited |
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Do not offset risk across accounts
Opposing positions in the same or correlated products across separate accounts are prohibited. This includes your own accounts, another trader’s accounts, and accounts held at different firms.
Example: a follower misses the exit
Assume two of your Boxcar evaluation or simulated-funded accounts start long one NQ contract with the same expiration. A missed follower exit can create the following sequence.
One short plus one long nets to zero across the accounts; the last row is still prohibited because the accounts hold opposing positions.
| Event | Leader A | Follower B |
|---|---|---|
| Both entries fill | Long 1 | Long 1 |
| Only the leader’s exit fills | Flat | Long 1 |
| Leader opens a short before follower exits | Short 1 | Long 1 |
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Violations and unclear setups
A first violation can result in affected balances being returned to the prior-day level. Repeated violations can result in breached accounts and loss of access to Boxcar.
For a setup the published examples do not cover, support needs the product symbols, contract expirations, directions, account IDs and account stages to clarify the rule before you trade.