How come I can't sell short certain stocks? My broker says “no shares are available”
In finance, short selling (also known as shorting or going short) is the practice of selling assets, usually securities, that have been borrowed from a third party (usually a broker) with the intention of buying identical assets back at a later date to return to the lender. Remember your broker has to borrow it from somewhere, other clients or if they hold those specific stocks themselves. So if it isn't possible for them to lend you those stocks, they wouldn't. High P/E stocks would find more sellers than buyers, and if the broker has to deliver them, it would be a nightmare for him to deliver all those stocks, which he had lent you(others) back to whom he had borrowed from, as well as to people who had gone long(buy) when you went short(sell). And if every body is selling there is going to be a dearth of stocks to be borrowed from as everybody around is selling instead of buying. Shorts are difficult because you have to find someone to lend the stock to you. In contrast, put options don't require that. They also have some nice properties like you're only out the contract price. The options chain for BSFT will give you an idea of where the market is.  Keep in mind that BSFT only IPO'd last year and announced blowout earnings recently. Make sure the P:E you're looking at is using recent earnings reports! "You can't short a stock unless there is someone willing and able to ""lend"" shares to you. And there are several reasons why that might not be the case. First, BSFT is a ""new"" stock, which means that NO ONE has held it very long. It's much easier to short IBM or Exxon Mobil, where there are some long-term holders who would like to earn a little extra money lending you THEIR shares. But if ""everyone"" involved is busy buying or selling the stock, there won't be many people to lend it. That's not manipulation, that's just the market. Another reason may be a large ""short"" interest. That is many OTHERS have shorted it before you. That's dangerous for you, because if some lenders want to pull their shares off the market, they can cause a ""short squeeze"" that will drive the price much higher.  And stock shortages can be orchestrated by the company or large investors to artificially drive the price higher. Unless you have a lot of experience, don't try shorting small cap stocks. Try to gain some experience with large caps like IBM or Exxon Mobil first. Those are stocks that people at least can't ""play games"" with. YOu will win or lose based on the market itself."
Adding to the answers above, there is another source of risk: if one of the companies you are short receives a bid to be purchased by another company, the price will most probably rocket... Thanks for your reply. I’m not familiar with the term “Held-For-Trading Security”. My securities are generally held as collateral against my shorts. To clarify, I am just trying to track the “money in” and “money out” entries in my account for the shorts I write. The transaction is relatively straight forward, except there is a ton of information attached! In simple terms, for the ticker CSR and short contract CSRUQ8, the relevant entries look something like this: There are no entries for expiries. I need to ensure that funds are available for future margin calls and assignments. The sale side using covered calls is as involved. I don't think that the trading volume would impact a broker's ability to find shares to short.  You might think that a lot more people are trying to short a stock during regular trading hours than in the pre-market, and that's probably true.  But what's also true is that a lot more people are covering their shorts during regular trading hours than in the pre-market.  For stocks that have difficulty in finding shares to short, any time someone covers a short is an opportunity for you to enter a short. If you want to short a stock and your broker is rejecting your order because they can't find shares to short, then I would recommend that you continue placing that order throughout the day.  You might get lucky and submit one of those orders right after someone else has covered their short and before anyone else can enter a short.  I have had success doing this in the past. "As @ApplePie pointed out in their answer, at any given time there is a finite amount of stock available in a company. One subtlety you may be missing is that there is always a price associated with an offer to buy shares. That is, you don't put in an order simply to buy 1 share of ABC, you put in an order to buy 1 share of ABC for $10. If no one is willing to sell a share of ABC for $10, then your order will go unfilled. This happens millions of times a day as traders try to figure the cheapest price they can get for a stock. Practically speaking, there is always a price at which people are willing to sell their shares. You can put in a market order for 1 share of ABC, which says essentially ""I want one share of ABC, and I will pay whatever the market deems to be the price"". Your broker will find you 1 share, but you may be very unhappy about the price you have to pay! While it's very rare for a market to have nobody willing to sell at any price, it occasionally happens that no one is willing to buy at any price. This causes a market crash, as in the 2007-2008 financial crisis, when suddenly everyone became very suspicious of how much debt the major banks actually held, and for a few days, very few traders were willing to buy bank stocks at any price." "A ""covered put"" of the form of being short, and buying at the strike price if the ""put ... is put"" (excercise), is off the table simply because you can't do shorts in the retirement account. Even if you feel you ""win"" the argument that you're hedged by being short, any broker can say, ""we simply forbid shorts"" and that's that. A ""covered put"" of the form of posting the cash, and spending it to buy at the strike price if the ""put ... is put"" (excercise), might be forbidden by brokerages because, frankly, how do you account for the ""dedicated"" cash? Is it locked down like margin is, or escrow, or what? I don't know offhand how I would address that in my very own firm. Thus, any broker could say, ""we forbid it"" and that's that. The other answers are very interesting in conjunction with this. JoeTaxpayer says, very paraphrased, 'just cuz it's legal doesn't mean we have to offer it.' Jaydles says (again, completely paraphrasing), 'complex stuff for a safe little retirement savings account;' 'difficult to administer' (as I said, how do you account for it); and 'tradition' So maybe look at Scott, per Thorn's answer, LOL. It appears that you can shop around on this issue." "Being ""Long"" something means you own it.  Being ""Short"" something means you have created an obligation that you have sold to someone else.  If I am long 100 shares of MSFT, that means that I possess 100 shares of MSFT.  If I am short 100 shares of MSFT, that means that my broker let me borrow 100 shares of MSFT, and I chose to sell them.  While I am short 100 shares of MSFT, I owe 100 shares of MSFT to my broker whenever he demands them back.  Until he demands them back, I owe interest on the value of those 100 shares.  You short a stock when you feel it is about to drop in price.  The idea there is that if MSFT is at $50 and I short it, I borrow 100 shares from my broker and sell for $5000.  If MSFT falls to $48 the next day, I buy back the 100 shares and give them back to my broker.  I pocket the difference ($50 - $48 = $2/share x 100 shares = $200), minus interest owed.  Call and Put options.  People manage the risk of owning a stock or speculate on the future move of a stock by buying and selling calls and puts.  Call and Put options have 3 important components.  The stock symbol they are actionable against (MSFT in this case), the ""strike price"" - $52 in this case, and an expiration, June.  If you buy a MSFT June $52 Call, you are buying the right to purchase MSFT stock before June options expiration (3rd Saturday of the month).  They are priced per share (let's say this one cost $0.10/share), and sold in 100 share blocks called a ""contract"".  If you buy 1 MSFT June $52 call in this scenario, it would cost you 100 shares x $0.10/share = $10.  If you own this call and the stock spikes to $56 before June, you may exercise your right to purchase this stock (for $52), then immediately sell the stock (at the current price of $56) for a profit of $4 / share ($400 in this case), minus commissions.  This is an overly simplified view of this transaction, as this rarely happens, but I have explained it so you understand the value of the option.  Typically the exercise of the option is not used, but the option is sold to another party for an equivalent value.  You can also sell a Call.  Let's say you own 100 shares of MSFT and you would like to make an extra $0.10 a share because you DON'T think the stock price will be up to $52/share by the end of June.  So you go to your online brokerage and sell one contract, and receive the $0.10 premium per share, being $10.  If the end of June comes and nobody exercises the option you sold, you get to keep the $10 as pure profit (minus commission)!  If they do exercise their option, your broker makes you sell your 100 shares of MSFT to that party for the $52 price.  If the stock shot up to $56, you don't get to gain from that price move, as you have already committed to selling it to somebody at the $52 price.  Again, this exercise scenario is overly simplified, but you should understand the process.  A Put is the opposite of a Call.  If you own 100 shares of MSFT, and you fear a fall in price, you may buy a PUT with a strike price at your threshold of pain.  You might buy a $48 June MSFT Put because you fear the stock falling before June.  If the stock does fall below the $48, you are guaranteed that somebody will buy yours at $48, limiting your loss.  You will have paid a premium for this right (maybe $0.52/share for example).  If the stock never gets down to $48 at the end of June, your option to sell is then worthless, as who would sell their stock at $48 when the market will pay you more?  Owning a Put can be treated like owning insurance on the stock from a loss in stock price.  Alternatively, if you think there is no way possible it will get down to $48 before the end of June, you may SELL a $48 MSFT June Put.  HOWEVER, if the stock does dip down below $48, somebody will exercise their option and force you to buy their stock for $48.  Imagine a scenario that MSFT drops to $30 on some drastically terrible news.  While everybody else may buy the stock at $30, you are obligated to buy shares for $48.  Not good!  When you sold the option, somebody paid you a premium for buying that right from you.  Often times you will always keep this premium.  Sometimes though, you will have to buy a stock at a steep price compared to market.  Now options strategies are combinations of buying and selling calls and puts on the same stock.  Example -- I could buy a $52 MSFT June Call, and sell a $55 MSFT June Call.  I would pay money for the $52 Call that I am long, and receive money for the $55 Call that I am short.  The money I receive from the short $55 Call helps offset the cost of buying the $52 Call.  If the stock were to go up, I would enjoy the profit within in $52-$55 range, essentially, maxing out my profit at $3/share - what the long/short call spread cost me.  There are dozens of strategies of mixing and matching long and short calls and puts depending on what you expect the stock to do, and what you want to profit or protect yourself from.  A derivative is any financial device that is derived from some other factor.  Options are one of the most simple types of derivatives.  The value of the option is derived from the real stock price.  Bingo?  That's a derivative.  Lotto?  That is also a derivative.  Power companies buy weather derivatives to hedge their energy requirements.  There are people selling derivatives based on the number of sunny days in Omaha.  Remember those calls and puts on stock prices?  There are people that sell calls and puts based on the number of sunny days in Omaha.  Sounds kind of ridiculous -- but now imagine that you are a solar power company that gets ""free"" electricity from the sun and they sell that to their customers.  On cloudy days, the solar power company is still on the hook to provide energy to their customers, but they must buy it from a more expensive source.  If they own the ""Sunny Days in Omaha"" derivative, they can make money for every cloudy day over the annual average, thus, hedging their obligation for providing more expensive electricity on cloudy days.  For that derivative to work, somebody in the derivative market puts a price on what he believes the odds are of too many cloudy days happening, and somebody who wants to protect his interests from an over abundance of cloudy days purchases this derivative.  The energy company buying this derivative has a known cost for the cost of the derivative and works this into their business model.  Knowing that they will be compensated for any excessive cloudy days allows them to stabilize their pricing and reduce their risk.  The person selling the derivative profits if the number of sunny days is higher than average.  The people selling these types of derivatives study the weather in order to make their offers appropriately.  This particular example is a fictitious one (I don't believe there is a derivative called ""Sunny days in Omaha""), but the concept is real, and the derivatives are based on anything from sunny days, to BLS unemployment statistics, to the apartment vacancy rate of NYC, to the cost of a gallon of milk in Maine.  For every situation, somebody is looking to protect themselves from something, and somebody else believes they can profit from it.  Now these examples are highly simplified, many derivatives are highly technical, comprised of multiple indicators as a part of its risk profile, and extremely difficult to explain.  These things might sound ridiculous, but if you ran a lemonade stand in Omaha, that sunny days derivative just might be your best friend..." For Canada No distinction is made in the regulation between “naked” or “covered” short sales. However, the practice of “naked” short selling, while not specifically enumerated or proscribed as such, may violate other provisions of securities legislation or self-regulatory organization rules where the transaction fails to settle. Specifically, section 126.1 of the Securities Act prohibits activities that result or contribute “to a misleading appearance of trading activity in, or an artificial price for, a security or derivative of a security” or that perpetrate a fraud on any person or company. Part 3 of National Instrument 23-101 Trading Rules contains similar prohibitions against manipulation and fraud, although a person or company that complies with similar requirements established by a recognized exchange, quotation and trade reporting system or regulation services provider is exempt from their application. Under section 127(1) of the Securities Act, the OSC also has a “public interest jurisdiction” to make a wide range of orders that, in its opinion, are in the public interest in light of the purposes of the Securities Act (notwithstanding that the subject activity is not specifically proscribed by legislation). The TSX Rule Book also imposes certain obligations on its “participating organizations” in connection with trades that fail to settle (see, for example, Rule 5-301 Buy-Ins).  In other words, shares must be located by the broker before they can be sold short. A share may not be locatable because there are none available in the broker's inventory, that it cannot lend more than what it has on the books for trade.  A share may not be available because the interest rate that brokers are charging to borrow the share is considered too high by that broker, usually if it doesn't pass on borrowing costs to the customer.  There could be other reasons as well. If one broker doesn't have inventory, another might.  I recommend checking in on IB's list.  If they can't get it, my guess would be that no one can since IB passes on the cost to finance short sales. Short sellers have to pay interest on the borrowings to the shareholders. Although many times brokers don't pass on these earnings to the shareholders, this is the exchange. Exact rules may be different depending on the size of the investor, the specific broker, and the country.  For both the US and Canada, short sales occur only through one's margin account.  And shares that are borrowed for shorting only come from a margin account. Shares held in a cash account are not available for shorting.  From Wikipedia Short (finance) - The speculator instructs the broker to sell the shares and the   proceeds are credited to his broker's account at the firm upon which   the firm can earn interest. Generally, the short seller does not earn   interest on the short proceeds and cannot use or encumber the proceeds   for another transaction. As with many questions, I'd suggest you contact your broker for the exact details governing your account. The problem with short would be that even if the stock eventually falls, it might raise a lot in the meantime, and unless you have enough collateral, you may not survive till it happens.  To sell shares short, you first need to borrow them (as naked short is currently prohibited in US, as far as I know). Now, to borrow you need some collateral, which is supposed to be worth more that the asset you are borrowing, and usually substantially more, otherwise the risk for the creditor is too high. Suppose you borrowed 10K worth of shares, and gave 15K collateral (numbers are totally imaginary of course). Suppose the shares rose so that total cost is now 14K. At this moment, you will probably be demanded to either raise more collateral or close the position if you can not, thus generating you a 4K loss. Little use it would be to you if next day it fell to 1K - you already lost your money!  As Keynes once said, Markets can remain irrational longer than you can remain solvent. See also another answer which enumerates other issues with short selling. As noted by @MichaelPryor, options may be a safer way to do it. Or a short ETF like PSQ - lists of those are easy to find online. It would be nice if the broker could be instructed to clear out the position for you, but in my experience the broker will simply give you the shares that you can't afford, then freeze your account because you are over your margin limit, and issue a margin call. This happened to me recently because of a dumb mistake: options I paid $200 for and expected to expire worthless, ended up slightly ITM, so they were auto-exercised on Friday for about $20k, and my account was frozen (only able to close positions).  By the next Monday, market news had shifted the stock against me and I had to sell it at a loss of $1200 to meet the margin call.  This kind of thing is what gives option trading a reputation for danger: A supposedly max-$200-risk turned into a 6x greater loss.  I see no reason to ever exercise, I always try to close my positions, but these things can happen. why can't I just use the same trick with my own shares to make money on the way    down? Because if you sell shares out of your own portfolio, by definition, you are not selling short at all. If you sell something you own (and deliver it) - then there is no short involved. A short is defined as a net negative position - i.e. you sell shares you do not have. Selling shares you own is selling shares you own - no short involved. You must borrow the shares for a short because in the stock market, you must DELIVER. You can not deliver shares you do not own. The stock market does not work on promises - the person who bought the shares expects ownership of them with all rights that gives them. So you borrow them to deliver them, then return them when you buy them back. "When I have stock at my brokerage account, the title is in street name - the brokerage's name and the quantity I own is on the books of the brokerage (insured by SIPC, etc).  The brokerage loans ""my"" shares to a short seller and is happy to facilitate trades in both directions for commissions (it's a nice trick to get other parties to hold the inventory while you reap income from the churn); by selecting the account I have I don't get to choose to not loan out the shares." &gt; A short position also loses money if the stock just appreciates more slowly than the broader market, which is one way an overvaluation can correct itself.  Is there a derivative based on the literal second derivative (acceleration) of the stock price? If so, you'd be able to short those, yes? Some platforms/brokers have HTB indication for a stock symbol, meaning Hard To Borrow. That usually means you can't sell it short at the moment.