How can put options be used to buy shares at a lower price?
"Cart's answer describes well one aspects of puts: protective puts; which means using puts as insurance against a decline in the price of shares that you own.  That's a popular use of puts.  But I think the wording of your question is angling for another strategy: Writing puts. Consider: Cart's strategy refers to the buyer of a put.  But, on the transaction's other side is a seller of the put – and ultimately somebody created or wrote that put contract in the first place!  That first seller of the put – that is, the seller that isn't just selling one they themselves bought – is the put writer. When you write a put, you are taking on the obligation to buy the other side's stock at the put exercise price if the stock price falls below that exercise price by the expiry date.  For taking on the obligation, you receive a premium, like how an insurance company charges a premium to insure against a loss. Example:  Imagine ABC Co. stock is trading at $25.00.  You write a put contract agreeing to buy 100 shares of ABC at $20.00 per share (the exercise price) by a given expiration date.  Say you receive $2.00/share premium from the put buyer.  You now have the obligation to purchase the shares from the put buyer in the event they are below $20.00 per share when the option expires – or, technically any time before then, if the buyer chooses to exercise the option early. Assuming no early assignment, one of two things will happen at the option expiration date: ABC trades at or above $20.00 per share. In this case, the put option will expire worthless in the hands of the put buyer.  You will have pocketed the $200 and be absolved from your obligation.  This case, where ABC trades above the exercise price, is the maximum profit potential. ABC trades below $20.00 per share.  In this case, the put option will be assigned and you'll need to fork over $2000 to the put buyer in exchange for his 100 ABC shares.  If those shares are worth less than $18.00 in the market, then you've suffered a loss to the extent they are below that price (times 100), because remember – you pocketed $200 premium in the first place.  If the shares are between $18.00 to $20.00, you're still profitable, but not to the full extent of the premium received. You can see that by having written a put it's possible to acquire ABC stock at a price lower than the market price – because you received some premium in the process of writing your put.  If you don't ""succeed"" in acquiring shares on your first write (because the shares didn't get below the exercise price), you can continue to write puts and collect premium until you do get assigned. I have read the book ""Money for Nothing (And Your Stocks for FREE!)"" by Canadian author Derek Foster.  Despite the flashy title, the book essentially describes Derek's strategy for writing puts against dividend-paying value stocks he would love to own.  Derek picks quality companies that pay a dividend, and uses put writing to get in at lower-than-market prices.  Four Pillars reviewed the book and interviewed Derek Foster: Money for Nothing: Book Review and Interview with Derek Foster. Writing puts entails risk.  If the stock price drops to zero then you'll end up paying the put exercise price to acquire worthless shares!  So your down-side can easily be multiples of the premium collected.  Don't do this until and unless you understand exactly how this works.  It's advanced. Note also that your broker isn't likely to permit you to write puts without having sufficient cash or margin in your account to cover the case where you are forced to buy the stock.  You're better off having cash to secure your put buys, otherwise you may be forced into leverage (borrowing) when assigned.  Additional Resources: The Montreal Exchange options guide (PDF) that Cart already linked to is an excellent free resource for learning about options.  Refer to page 39, ""Writing secured put options"", for the strategy above. Other major options exchanges and organizations also provide high-quality free learning material:" If you are looking for a simple formula or buying order / strategy to guarantee a lower buying price, unfortunately this does not exist.  Otherwise, all investors would employ this strategy and the financial markets would no longer have an validity (aka arbitrage).  Buying any investment contains a certain level of risk (other than US treasuries of course). Having said that, there are many option buying strategies that can employed to help increase your ROR or hedge an existing position.  Most of these strategies are based a predicted future direction of a stock on the investor's part.  For example, you hold the Ford stock and feel they are releasing their earnings report next week.  You feel that they will not meet investors' expectations.  You don't want to sell your shares but what you can do is buy put options.  If the stock does indeed go down then you make money on your put options. Here is a document on options.  It is moderately technical but very good if you want a good introduction on the subject.  The strategy that I described above is on pg 33. http://www.m-x.ca/f_publications_en/en.guide.options.pdf
Put options are contracts to sell. You pay me a fee for the right to put the stock (or other underlying security) in my hands if you want to. That happens on a specific date (the strike date) and a specified price (the strike price). You can decide not to exercise that right, but I must follow through and let you sell it to me if you want to. Put options can be used by the purchaser to cap losses. For example: You purchase a PUT option for GE Oct19 13.00 from me. On October 19th, you can make me let you sell your GE stock to me for $13.00 a share. If the price for GE has fallen to $12.00, that would be a good idea. If its now at $15.00 a share, you will probably keep the GE or sell it at the current market price. Call options are contracts to buy. The same idea only in the other direction: You pay me a fee for the right to call the stock away from me. Calls also have a strike date and strike price. Like a put, you can choose not to exercises it. You can choose to buy the stock from me (on the strike date for the strike price), but I have to let you buy it from me if you want to.  For example: You purchase a CALL option for GE Oct19 16.00 option from me. On October 19th, you can buy my GE stock from me for $16.00 a share. If the current price is $17.50, you should make me let you buy if from me for $16.00. If its less than $16.00, you could by it at the current market price for less. Commonly, options are for a block of 100 shares of the underlying security. Note: this is a general description. Options can be very complicated. The fee you pay for the option and the transaction fees associated with the shares affects whether or not exercising is financially beneficial. Options can be VERY RISKY. You can loose all your money as there is no innate value in the option, only how it relates to the underlying security. Before your brokerage will let you trade, there are disclosures you must read and affirm that you understand the risk. As others have posted, the company gains capital in return for its new shares. However, the share price can still fall. The problem is that the share marked is affected by supply and demand like any other marked.  If the company just issues the new shares at marked price, they will have problems finding buyers.  The people who are willing to pay that price has already bought as many shares as they want. The company does this to raise capital, and depends on the shares actually selling for this to work.  So, they issue shares at below marked price to attract buyers and the shares get diluted.  In the end the share will usually end up somewhere between the old marked price and the issue price. The old share owners are probably not too happy about this and will not accept this plan. (At least here in Norway, share issue has to be accepted at a shareholder meeting) So, what is often done instead is to issue buy options for the required number of shares at the below-marked price.  These options are given (for free) to the current share holders proportional to their current holding. If everybody exercises their options they get new cheap shares that compensates for the loss of share value.  If they don't have the capital themselves, they can sell the options and get compensation that way instead. "Great answer by @duffbeer. Only thing to add is that the option itself becomes a tradeable asset. Here's my go at filling out the answer from @duffbeer. ""Hey kid... So you have this brand-new video game Manic Mazes that you paid $50 for on Jan 1st that you want to sell two months from now"" ""Yes, Mr. Video Game Broker, but I want to lock in a price so I know how much to save for a new Tickle Me Elmo for my baby sister."" ""Ok, for $3, I'll sell you a 'Put' option so you can sell the game to me for $40 in two months."" Kid says ""Ok!"", sends $3 to Mr Game Broker who sends our kid a piece of paper saying: The holder of this piece of paper can sell the game Manic Mazes to Mr Game Broker for $40 on March 1st. .... One month later .... News comes out that Manic Mazes is full of bugs, and the price in the shops is heavily discounted to $30. Mr Options Trader realizes that our kid holds a contract written by Mr Game Broker which effectively allows our kid to sell the game at $10 over the price of the new game, so maybe about $15 over the price in the second-hand market (which he reckons might be about $25 on March 1st). He calls up our kid. ""Hey kid, you know that Put option that Mr Game Broker sold to you you a month ago, wanna sell it to me for $13?"" (He wants to get it a couple of bucks cheaper than his $15 fair valuation.) Kid thinks:  hmmm ... that would be a $10 net profit for me on that Put Option, but I wouldn't be able to sell the game for $40 next month, I'd likely only get something like $25 for it. So I would kind-of be getting $10 now rather than potentially getting $12 in a month. Note: The $12 is because there could be $15 from exercising the put option (selling for $40 a game worth only $25 in the second-hand market) minus the original cost of $3 for the Put option. Kid likes the idea and replies: ""Done!"". Next day kid sends the Put option contract to Mr Options Trader and receives $13 in return. Our kid bought the Put option and later sold it for a profit, and all of this happened before the option reached its expiry date." according to the Options Industry council ( http://www.optionseducation.org/tools/faq/splits_mergers_spinoffs_bankruptcies.html ) put options  the shares (and therefore the options) may continue trading OTC but if the shares completely stop trading then: if the courts cancel the shares, whereby common shareholders receive nothing, calls will become worthless and an investor who exercises a put would receive 100 times the strike price and deliver nothing. The reason for this is that it is not the company whose shares you have the option on that you have a contract with but the counterparty who wrote the option. If the counterparty goes bankrupt then you may not get paid out (depending on assets available at liquidation - this is counterparty risk) but, unless the two are the same, if the company whose shares you have a put option on declares bankruptcy then you will get paid I doubt that this exists, but it could theoretically. After all, a share is kind of an option to a company's future success, and so a call is already a second level on indirection. The better approach would be to 'create your own Put-Puts', by investing less money (A) in the Put you wanted to invest into, and put the smaller rest (B) in the share itself or a Call. That way, if the original Put is successful, at max (B) is lost, and if it is unsuccessful, the loss on (A) is covered by a gain on (B). Potentially, if you do the math, you can reach a mathematical equivalent situation to a Put-Put by buying the right amount and kind of Calls. However, we know already that buying a Put and a Call is a poor strategy, so that would mean a Put-Put would also be a poor strategy. This is allowed somewhat infrequently.  You can often purchase stocks through DRIPs which might have little or no commission.  For example Duke Energy (DUK) runs their plan internally, so you are buying from them directly.  There is no setup fee, or reinvestment fee.  There is a fee to sell. Other companies might have someone else manage the DRIP but might subsidize some transaction costs giving you low cost to invest.  Often DRIPs charge relatively large amounts to sell and they are not very nimble if trading is what you are after. You can also go to work for a company, and often they allow you to buy stock from them at a discount (around 15% discount is common). You can use a discount broker as well.  TradeKing, which is not the lowest cost broker, allows buys and sells at 4.95 per trade.  If trading 100 shares that is similar in cost to the DUK DRIP. In the first case, if you wish to own the stock, you just exercise the option, and buy it for the strike price. Else, you can sell the option just before expiration, it will be priced very close to its in-the-money value. Timothy Sykes specializes in this type of trade, according to his website. He has some recommendations for brokers that allow shorting low-priced stocks: "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." "fennec has a very good answer but i feel it provides too much information. So i'll just try to explain what that sentence says. Put option is the right to sell a stock. ""16 puts on Cisco at 71 cents"", means John comes to Jim and says, i'll give you 71 cent now, if you allow me to sell one share of Cisco to you at $16 at some point in the future ( on expiration date).  NYT quote says 1000 puts that means 1000 contracts - he bought a right to sell 100,000 shares of Cisco on some day at $16/share. Call option - same idea: right to buy a stock." The least expensive way to buy such small amounts is through ING's Sharebuilder service. You can perform a real-time trade for $9, or you can add a one-time trade to their investment schedule for $4 (transaction will be processed on the next upcoming Tuesday morning). They also allow you to purchase fractional shares. Yes, theoretically you can flip the shares you agreed to buy and make a profit, but you're banking on the market behaving in some very precise and potentially unlikely ways.  In practice it's very tricky for you to successfully navigate paying arbitrarily more for a stock than it's currently listed for, and selling it back again for enough to cover the difference.  Yes, the price could drop to $28, but it could just as easily drop to $27.73 (or further) and now you're hurting, before even taking into account the potentially hefty commissions involved. Another way to think about it is to recognize that an option transaction is a bet; the buyer is betting a small amount of money that a stock will move in the direction they expect, the seller is betting a large amount of money that the same stock will not.  One of you has to lose.  And unless you've some reason to be solidly confident in your predictive powers the loser, long term, is quite likely to be you. Now that said, it is possible (particularly when selling puts) to create win-win scenarios for yourself, where you're betting one direction, but you'd be perfectly happy with the alternative(s).   Here's an example.  Suppose, unrelated to the option chain, you've come to the conclusion that you'd be happy paying $28 for BBY.  It's currently (June 2011) at ~$31, so you can't buy it on the open market for a price you'd be happy with.  But you could sell a $28 put, promising to buy it at that price should someone want to sell it (presumably, because the price is now below $28). Either the put expires worthless and you pocket a few bucks and you're basically no worse off because the stock is still overpriced by your estimates, or the option is executed, and you receive 100 shares of BBY at a price you previously decided you were willing to pay.  Even if the list price is now lower, long term you expect the stock to be worth more than $28.  Conceptually, this makes selling a put very similar to being paid to place a limit order to buy the stock itself. Of course, you could be wrong in your estimate (too low, and you now have a position that might not become profitable; too high, and you never get in and instead just watch the stock gain in value), but that is not unique to options - if you're bad at estimating value (which is not to be confused with predicting price movement) you're doomed just about whatever you do. You can execute block trades on the options market and get exercised for shares to create a very large position in Energy Transfer Partners LP without moving the stock market. You can then place limit sell orders, after selling directly into the market and keep an overhang of low priced shares (the technical analysis traders won't know what you specifically are doing, and will call this 'resistance'). If you hit nice even numbers (multiples of 5, multiples of 10) with your sell orders, you can exacerbate selling as many market participants will have their own stop loss orders at those numbers, causing other people to sell at lower and lower prices automatically, and simultaneously keep your massive ask in effect. If your position is bigger than the demand then you can keep a stock lower. The secondary market doesn't inherently affect a company in any way. But many companies have borrowed against the price of their shares, and if you get the share price low enough they can get suddenly margin called and be unable to service their existing debt. You will also lose a lot of money doing this, so you can also buy puts along the way or attempt to execute a collar to lower your own losses. The collar strategy is nice because it is unlikely that other traders and analysts will notice what you are doing, since there are calls, puts and share orders involved in creating it. One person may notice the block trade for the calls initially, but nobody will notice it is part of a larger strategy with multiple legs. With the share position, you may also be able to vote on some things, but that solely depends on the conditions of the shares. An option gives you the legal right to buy stock. However, you cannot exercise a stock option unless you have the ability to buy the stock. In the United States, securities not fully registered with the SEC for public sale cannot be purchased except by qualified investors. $15 - $5 = $10 How did you possibly buy a put for less than the intrinsic value of the option, at $8.25 So we can infer that you would have had to get this put when the stock price was AT LEAST $6.75, but given the 3 months of theta left, it was likely above $7 The value of the put if the price of the underlying asset (the stock ABC) meandered between $5 - $7 would be somewhere between $10 - $8 at expiration. So you don't really stand to lose much in this scenario, and can make a decent gain in this scenario. I mean decent if you were trading stocks and were trying to beat the S&P or keep up with Warren Buffett, but a pretty poor gain since you are trading options! If the stock moves above $7 this is where the put starts to substantially lose value.