The customer's position profit and loss is (2040-2000)*20* 10=8000.
The total profit of customers is 18000.
The customer holds 20 lots that day.
Occupancy deposit 2040*20* 10*5%=40800.
The risk degree of the customer is 40800/(100000+18000) = 0.34576.
Customer risk is not high, only 30 positions.