This income would never be reported on your own tax return. However, this income is not treated as the equivalent of W2 income for the purposes of determining whether the child is required to file.
This income is treated as unearned income. If the dependent child has unearned income of just $1050, a tax return must be filed for the child. You would create an additional username to file his/her return, and indicate that he/she is being claimed as a dependent.