Consider these facts:

• The current Minimum Initial Margin requirement is 50%.
• Maintenance Margin requirements are 30%.
• You buy 1,000 shares of Acme Enterprises for a price of $50 per share, using the maximum amount of borrowed money allowable.
• The day after you buy, the stock price rises to $55 per share. On the second day it drops to $40 per share.
• With the stock at $40 per share now;

How many more whole shares of stock can you now buy without adding any money to your account?