This may be a bit hard to follow but -
Ok lets say i bought some shares at 16 , i take a call out on 17 and the share price goes to 20 , the stock will be exercised at the call of 17. Do i have to pay out anything else after that becuase the share went very well?
You will recieve $17 for the shares. You get to keep the call premium received. You will be charged commission for being assigned. That's it.
I would also like to know if i bought a share at 16 , i take a call out on 17 and the price during that month fluctuates from 16 to 20 and closes at 15.
Is the person that bought the premium allowed to sell my shares at any time of the month or only on the close date. ?
It is always possible if a call option is in the money, that you may be assigned early. The call taker has the right to exercize at any time before expiry if the option is American style which it most certainly will be.
But it is unlikely unless there is an economic benefit for the taker of the option. If there is no dividend payable during the life of the option, there is NO economic benefit from the taker exercizing early, even if the option is at times substantially in the money. That said, there is still a small chance that some idiot will exercize early.
If the option is in the money, and there is a dividend payable, you will almost certainly be assigned early.
Sorry if these seem like straight forward questions but im getting mixed responses ranging from books to people.
Why am I not surprised?
Also if i bought at 16 , put a call on 17 and then used the premium to purchase a put option 1 -2 dollars below buy price to cover me if things go bad. If the call is a month exp will the put have to have 2 months or is it fine to just have the month.
You can do this, but it will alter your greeks. In fact what you will have is a synthetic vertical bull call spread (or synthetic diagonal if you use a longer expiry). Better to just trade the straight out vertical as it will use less capital
Sorry if this is all over the place . Tell me if it dont make sense