Does constructive possession become actualized when a profit of $20 is realized in a forex trade, and this profit appears in the account immediately upon closing the trade on the trading platform?

There are two conditions for dealing in forex and currency trading: The first is that the transaction must be with currencies one actually owns. It is not permissible to take a margin or leverage from the broker, because it is a loan that leads to combining a loan with brokerage, which is forbidden in Islamic law. The second is the occurrence of qabḍ (possession/seizure) in the contract session, even if it is constructive. This means that the money enters the accounts of both parties in the same session, with the possibility of withdrawing and disposing of it.