Hi,
I'm curious to know how option trading works. Say I have a put option and the price of the stock goes below the strike price. Is it possible to exercise the option by buying at the current price and immediately selling at the strike price and pocketing the difference without physically buying and selling the stock? In other words, I don't have the money to physically buy the stock first at the current price and then sell it at the strike price. Also, what are the commands on how to do this. I'm confused about the differences of "buy to open", "sell to close", "sell to open", and "buy to close". Any advice on how this works would be greatly appreciated.