Answer: 2500
Step-by-step explanation:
From the question, we are informed that acustomer who has a fully paid long position in ABC stock goes "short against the box" for a credit to his account of $50,000 and that ABC is a NASDAQ stock.
Then, to get the minimum maintenance margin requirement, we should know that FINRA has a 5% minimum maintenance margin on the long side. This will then be:
= 5% of 50,000
= 5% × 50,000
= 2500 minimum