Customers who have borrowed money to buy a house and are paying back. Stock mortgage customers refer to customers who have borrowed money to buy a house and are paying back, also known as stock mortgage customers. When banks or other financial institutions carry out housing mortgage loans, they usually divide the issued housing loans into two categories: stock loans and new loans. The stock house loan is a loan that has been issued and is being repaid on schedule, while the new mortgage refers to the newly issued loan recently. Banks or financial institutions can assess risks and formulate corresponding loan policies by counting the repayment and credit status of borrowers in stock houses.