I know this has been asked before but i would like to just make sure my understanding is correct.
I buy 500 bullets on IBM do I then buy 500 shares of ibm stock and when stock starts to drop i sell the stock and i am synthetically short. to cover i buy back stock. now i understand I can do this over and over during the day with the same bullets. What happens with the long stock I bought to cover at the end of day? Is it taken by firm to cover put or do i have to sell it?
I hope someone can help,

I buy 500 bullets on IBM do I then buy 500 shares of ibm stock and when stock starts to drop i sell the stock and i am synthetically short. to cover i buy back stock. now i understand I can do this over and over during the day with the same bullets. What happens with the long stock I bought to cover at the end of day? Is it taken by firm to cover put or do i have to sell it?
I hope someone can help,