def METHOD_NAME(self, named_value: str) -> list:
    liquidiation_values_across_accounts_dict = (
        self._get_named_value_across_accounts(named_value)
    )
    currencies = [
        list(account_dict.keys())
        for account_dict in liquidiation_values_across_accounts_dict.values()
    ]
    currencies = sum(currencies, [])  # flatten
    return list(set(currencies))