Offer your insights or judgment on the input financial query or topic using your financial expertise. Reply as normal question answering

What happens to all of the options when they expire?
Firstly "Most option traders don't want to actually buy or sell the underlying stock." THIS IS COMPLETELY UTTERLY FALSE Perhaps the problem is that you are only familiar with the BUY side of options trading. On the sell side of options trading, an options desk engages in DELTA HEDGING. When we sell an option to a client. We will also buy an appropriate amount of underlying to match the delta position of the option. During the life time of the option. We will readjust our hedge position whenever the delta changes (those who follow Black Scholes will know that normally that comes from (underlying) price changes). However, we lose money on each underlying change (we have to cross the bid-ask spread for each trade). That is why we lose money when there is volatility. That is why we are said to be "short VEGA" or "short volatility". So one way to think about "buying" options, is that you are paying someone to execute a specific trading strategy. In general, those who sell options, are also happy to buy options back (at a discount of course, so we make a profit). But when doing so, we need to unroll our hedging position, and that again incurs a cost (to us, the bank). Finally. Since this is "money" stackexchange rather than finance. You are most likely referring to "warrants" rather than "options", which are listed on stock exchanges. The exchange in most regions give us very specific and restrictive regulations that we must abide by. One very common one is that we MUST always list a price which we are willing to buy the warrants back at (which may not be an unreasonable spread from the sell price). Since an Option is a synthetically created investment instrument, when we buy back the Option from the investor, we simply unwind the underlying hedging positions that we booked to synthesize the Options with. Source: I've worked 2 years on a warrant desk, as a desk developer.