Answer:
Equity= $7,000
Explanation:
A customer has an existing short margin account that contains credit of $16,000
The short position in ABC stock is worth $10,000
The SMA in the account is $1,000
Therefore, if the market value of ABC falls down to $9,000 then, the equity can be calculated as follows
Equity= $16,000-$9,000
=$7,000
Hence the equity is $7,000