Gatsby does not currently support borrowing and trading on margin. As such, all accounts are cash accounts by default.
We do, however, offer a limited margin account to allow for spread trading. Unlike a traditional margin, limited margin will not leverage the assets in your account to generate additional buying power.
If you are interested in a limited margin account, please reach out to our support team at firstname.lastname@example.org.
You can find details on fees for margin balances here.