Consequences of not closing an open short sell position?
You would generally have to pay interest for everyday you hold the position overnight.  If you never close the position and the stock price goes to zero, you will be closed out and credited with your profit. If you never close the position and the stock price keeps going up and up, your potential loss is an unlimited amount of money.  Of course your broker may close you out early for a number of reasons, particularly if your loss goes above the amount of capital you have in your trading account. 2 things may happen. Either your positions are closed by the broker and the loss or profit is credited to your account. Else it is carried over to the next day and you pay interest on the stocks lent to you. What happens will be decided by the agreement signed between you and your broker.
In India, as suggested above, short/long position can be taken either in F&O or Spot market. The F&O segment short/long can be kept open for appx. 3 months by taking position on the far contract. In intra-day/Spot market, usually the position has to be squared at the end of day or the broker will square it during expiry (forcibly). However, having said that, it is a broker specific feature, as per National Stock Exchange (NSE) or Bombay Stock Exchange (BSE) any transaction has to be settled at the end of T+2 days (T being the trade day). Some brokers allow intra-day positions to be open for T+1 or T+2 days as long as the margin is provided. This is a broker specific discretion as the actual settlement is on T+2 (or in some cases as the exchange specifies). So, in general, to short a stock for a longer time, F&O segment should be used. For every seller, there's a buyer. Buyers may have any reason for wanting to buy (bargain shopping, foolish belief in a crazy business, etc).  The party (brokerage, market maker, individual) owning the stock at the time the company goes out of business is the loser . But in a general panic, not every company is going to go out of business. So the party owning those stocks can expect to recover some, or all, of the value at some point in the future. Brokerages all reserve the right to limit margin trading (required for short selling), and during a panic would likely not allow you to short a stock they feel is a high risk for them. "&gt; It just has to finish below the strike price of the short (which can be higher than the stock's current price).  You're talking about a put option.   That's one ""short"" strategy, but it's not shorting a stock, so the terminology is a little jumbled.   There are reasons to not do straight options, because they can be quite risky, and you have to get the time frame correct." The only time I've bothered with stop orders is when I think the position is in a particularly volatile state and there is an earnings report pending.  In this situation it's an easily debatable thing to do.  If I'm so concerned that the earnings report will be enough to cause a wild downswing that I'd place a stop order, maybe I should just drop the position now.   I subscribe to the school of thought that you don't sell your MVPs.  I've bought a few things on a whim that really performed well over the few years to follow.  To me it doesn't make sense to pick a return at which I would turn off the spigot.  So generally it doesn't make sense to hold orders that would force a sale, either after some upside or downside occurs. Additionally, if I've chosen something as a long term hold.  I never spend all my cash opening up a position.  I've frequently opened positions that subsequently experienced a decline, when that happens I buy more. Meaningless side thought: With the election coming I've been seriously considering pulling some of my gains off the table.  My big apprehension with doing that is that I have no near-term alternative use for the money.  So what's the point of selling a position I'm otherwise comfortable with just to pay taxes on the gain then probably buy back in? In this example, Client A has to buy shares to return them to Client B for his sale (closing Client A's short position).  Client B then sells the shares.  The end result is there are no shares within the brokerage clientele anymore, so Client A can't borrow them anymore.    The broker is just an intermediary, they wouldn't go out and acquire securities on their own for the benefit of a client wanting to short it, as they would be taking on the risk of the opposite position.  This would be in addition to the risk they already take on when allowing people to short sell -- which is that Client A won't have the money to buy the shares it owes to Client B, in which case the broker has to make Client B whole. "Below is just a little information on short selling from my small unique book ""The small stock trader"":  Short selling is an advanced stock trading tool with unique risks and rewards. It is primarily a short-term trading strategy of a technical nature, mostly done by small stock traders, market makers, and hedge funds. Most small stock traders mainly use short selling as a short-term speculation tool when they feel the stock price is a bit overvalued. Most long-term short positions are taken by fundamental-oriented long/short equity hedge funds that have identified some major weaknesses in the company. There a few things you should consider before shorting stocks: Despite all the mystique and blame surrounding short selling, especially during bear markets, I personally think regular short selling, not naked short selling, has a more positive impact on the stock market, as: Lastly, small stock traders should not expect to make significant profits by short selling, as even most of the great stock traders (Jesse Livermore, Bernard Baruch, Gerald Loeb, Nicolas Darvas, William O’Neil, and Steven Cohen,) have hardly made significant money from their shorts. it is safe to say that odds are stacked against short sellers. Over the last century or so, Western large caps have returned an annual average of between 8 and 10 percent while the returns of small caps have been slightly higher.  I hope the above little information from my small unique book was a little helpful! Mika (author of ""The small stock trader"")" "To summarize, there are three basic ways: (3) is the truly dangerous one. If there is a lot of short interest in a stock, but for some reason the stock goes up, suddenly a lot of people will be scrambling to buy that stock to cover their short position -- which will drive the price up even further, making the problem worse.  Pretty soon, a bunch of smart rich guys will be poor guys who are suddenly very aware that they aren't as smart as they thought they were.  Eight years ago, such a ""short squeeze"", as it's called, made the price of VW quadruple in two days.  You could hear the Heinies howl from Hamburg to Haldenwanger. There are ways to protect yourself, of course.  You can go short but also buy a call at a much higher price, thereby limiting your exposure, a strategy called a ""straddle"", but you also reduce your profit if you guessed right. It comes down to, as it always does, do you want to eat well, or to sleep well?" You're assuming options traded on the open market. To close open positions, a seller buys them back on the open market. If there's little on offer, this will drive the price up. In terms of pricing the asset, this functions in exactly the same way as a regular sell, so bids will have to be hit to fill the trade. When shorting an equity, currency is not borrowed; the equity is, so the value of per share liability is equal to it's last traded price or the ask if the equity is illiquid. Thus when opening a short position, the asks offer nothing to the process except competition for your order getting filled. Part of managing the trade is the interest rate risk.  If the asks are as illiquid as detailed in the question, it may be difficult even to locate the shares for borrowing. As a general rule, only illiquid  equities or those in free fall may be temporarily unable for shorting. Interactive Brokers posts their securities financing availabilities and could be used as a proxy guide for your broker. Yes there will be enough liquidity to sell your position barring some sort of Flash Crash anomaly. Volume generally rises on the day of expiration to increase this liquidity. Don't forget that there are many investment strategies--buying to cover a short position is closing out a trade similar to your case. "The question you are asking concerns the exercise of a short option position.  The other replies do not appear to address this situation. Suppose that Apple is trading at $96 and you sell a put option with a strike price of $95 for some future delivery date - say August 2016.  The option contract is for 100 shares and you sell the contract for a premium of $3.20. When you sell the option your account will be credited with the premium and debited with the broker commission.  The premium you receive will be $320 = 100 x $3.20.  The commission you pay will depend on you broker. Now suppose that the price of Apple drops to $90 and your option is exercised, either on expiry or prior to expiry.  Then you would be obliged to take delivery of 100 Apple shares at the contracted option strike price of $95 costing you $9,500 plus broker commission.  If you immediately sell the Apple shares you have purchased under your contract obligations, then assuming you sell the shares at the current market price of $90 you would realise a loss of $500 ( = 100x($95-$90) )plus commission.  Since you received a premium of $320 when you sold the put option, your net loss would be $500-$320 = $180 plus any commissions paid to your broker. Now let's look at the case of selling a call option.  Again assume that the price of Apple is $96 and you sell a call option for 100 shares with a strike price of $97 for a premium of $3.60.  The premium you receive would be $360 = 100 x $3.60.  You would also be debited for commission by your broker. Now suppose that the price of Apple shares rises to $101 and your option is exercised.  Then you would be obliged to deliver 100 Apple shares to the party exercising the option at the contracted strike price of $97.  If you did not own the shares to effect delivery, then you would need to purchase those shares in the market at the current market price of $101, and then sell them to the party exercising the option at the strike price of $97.  This would realise an immediate loss of $400 = 100 x ($101-$97) plus any  commission payable.  If you did own the shares, then you would simply deliver them and possibly pay some commission or a delivery fee to your broker.  Since you received $360 when you sold the option, your net loss would be $40 = $400-$360 plus any commission and fees payable to the broker. It is important to understand that in addition to these accounting items, short option positions carry with them a ""margin"" requirement.  You will need to maintain a margin deposit to show ""good faith"" so long as the short option position is open.  If the option you have sold moves against you, then you will be called upon to put up extra margin to cover any potential losses." You are NOT responsible for liquidating the position.  You will either end up retaining your 100 sh. after expiration, or they will be called away automatically. You don't have to do anything.  Extending profitability can mean different things, but a major consideration is whether or not you want to hold the stock or not.  If so, you can buy back the in-the-money call and sell another one at-the-money, or further out. There are lots of options. "Am I getting it right that in India in terms of short selling in F&O market its what in the rest of the world is called naked short and you actually make promise to depositary that you will deliver that security you sold on settlement without actually owning the security or going through SLB mechanism? In Future and Options; there is no concept of short selling. You buy a future for a security / index. On the settlement day; the exchange determines the settlement price. The trade is closed in cash. i.e. Based on the settlement price, you [and the other party] will either get money [other party looses money] or you loose money [other party gets the money]. Similarly for Options; on expiry, the all ""In Money"" [or At Money] Options are settled in cash and you are credit with funds [the option writer is debited with funds]. If the option is ""out of money"" it expires and you loose the premium you paid to exercise the option." An option is freely tradable, and all options (of the same kind) are equal. If your position is 0 and you sell 1 option, your new position in that option is -1. If the counterparty to your trade buys or sells more options to close, open, or even reopen their position afterwards, that doesn't matter to your position at all. Of course there's also the issue with American and European Options. European Options expire at their due date, but American Options expire at their due date or at any time before their due date if the holder decides they expire. With American Options, if a holder of an American Option decides to exercise the option, someone who is short the same option will be assigned as the counterparty (this is usually random). Expiry is after market close, so if one of your short American Options expires early, you will need to reopen the position the next day. Keep in mind dividends for slightly increased complexity. American and European Options do not in any way refer to the continents they are traded on, or to the location of the companies. These terms simply describe the expiry rules. "This simulation game uses actual historical S&P 500 data to test whether you can ""time the market."" You start with $10,000 invested, and it plays back 10 years of index values, in which time you can choose to sell (once), and if you do sell you can subsequently buy (once). Then you find out how you did relative to just holding what you started with.  If you play it enough times, you might eventually beat it once. I never did."