Purchasing options between the bid and ask prices, or even at the bid price or below?
I understand the question, I think. The tough thing is that trades over the next brief time are random, or appear so. So, just as when a stock is $10.00 bid / $10.05 ask, if you place an order below the ask, a tick down in price may get you a fill, or if the next trades are flat to higher, you might see the close at $10.50, and no fill as it never went down to your limit.  This process is no different for options than for stocks.  When I want to trade options, I make sure the strike has decent volume, and enter a market order. Edit - I reworded a bit to clarify. The Black–Scholes is a model, not a rigid equation. Say I discover an option that's underpriced, but it trades under right until it expires. It's not like there's a reversion to the mean that will occur. There are some very sophisticated traders who use these tools to trade in some very high volumes, for them, it may produce results. For the small trader you need to know why you want to buy a stock or its option and not worry about the last $0.25 of its price. "Yes, almost always. I trade some of the most illiquid single stock options, and I would be absolutely murdered if I didn't try to work orders between the bid/ask.  When I say illiquid, I mean almost non-existent: ~50 monthly contracts on ALL contracts for a given underlying.  Spreads of 30% or more. The only time you shouldn't try to work an order, in my opinion, is when you think you need to trade immediately (rare), if implied volatility (IV) has moved to such a degree that the market makers (MM) won't hit your order while they're offering fair IV (they'll sometimes come down to meet you at their ""real"" price to get the exchange's liquidity rebate), or if the bid/ask spread is a penny. For illiquid single stock options, you need to be extremely mindful of implied and statistical volatility.  You can't just try to always put your order in the middle.  The MMs will play with the middle to get you to buy at higher IVs and sell at lower. The only way you can hope that an order working below the bid / above the ask will get filled is if a big player overwhelms the MMs' (who are lined up on the bid and ask) current orders and hits yours with one large order.  I've never seen this happen. The only other way is like you said: if the market moves against you, the orders in front of yours disappear, and someone hits your order, but I think that defeats the intent of your question." "People must simply be willing to match your orders if they know about it. You can sniff orders out if you can see them or predict them. For instance, you can look at an order book and decide who you want to get filled at, especially if you are looking at different quotes from different exchanges. So you can get a ""better"" fill just by looking at what someone is willing to pay to enter/exit their order as well as what exchange they placed their order through, and send an order to that specific exchange to match them. You (or a program) can just watch the level 2's and place an order as soon as you see one you like. The orders on the level2's do not reveal ALL interested market participants. Also many brokers have difficulty updating options quotes. Finally, options & market volatility can inflate or decrease the price of options by large percentages very quickly." I frequently do this on NADEX, selling out-of-the-money binary  calls. NADEX is highly illiquid, and the bid/ask is almost always from  the market maker. Out-of-the-money binary calls lose value quickly  (NADEX daily options exist for only ~21 hours). If I place an  above-ask order, it either gets filled quickly (within a few minutes)  due to a spike in the underlying, or not at all. I compensate by  changing my price hourly.  As Joe notes, one of Black-Scholes inputs is volatility, but price  determines (implied) volatility, so this is circular. In other words, you can  treat the bid/ask prices as bid/ask volatilities. This isn't as  far-fetched as it seems:  http://www.cmegroup.com/trading/fx/volatility-quoting-fx-options.html This sometimes happens to me. It depends on how liquid the option is. Normally what I see happening is that the order book mutates itself around my order. I interpret this to mean that the order book is primarily market makers. They see a retail investor (me) come in and, since they don't have any interest in this illiquid option, they back off. Some other retail investor (or whatever) steps in with a market order, and we get matched up. I get a fill because I become the market maker for a brief while. On highly liquid options, buy limits at the bid tend to get swallowed because the market makers are working the spread. With very small orders (a contract or two) on very liquid options, I've had luck getting quick fills in the middle of the spread, which I attribute to MM's rebalancing their holdings on the cheap, although sometimes I like to think there's some other anal-retentive like me out there that hates to see such a lopsided book. :) I haven't noticed any particular tendency for this to happen more with puts or calls, or with buy vs sell transactions. For a while I had a suspicion that this was happening with strikes where IV didn't match IV of other strikes, but I never cared enough to chase it down as it was a minor part of my overall P/L.
I would make a change to the answer from olchauvin: If you buy a call, that's because you expect that the value of call options will go up. So if you still think that options prices will go up, then a sell-off in the stock may be a good point to buy more calls for cheaper. It would be your call at that point (no pun intended). Here is some theory which may help. An options trader in a bank would say that the value of a call option can go up for two reasons: The VIX index is a measure of the levels of implied volatility, so you could intuitively say that when you trade options you are taking a view on two components: the underlying stock, and the level of the VIX index. Importantly, as you get closer to the expiry date this second effect diminishes: big jumps up in the VIX will produce smaller increases in the value of the call option. Taking this point to its limit, at maturity the value of the call option is only dependent on the price of the underlying stock. An options trader would say that the vega of a call option decreases as it gets closer to expiry. A consequence of this is that if pure options traders are naturally less inclined to buy and hold to expiry (because otherwise they would really just be taking a view on the stock price rather than the stock price & the implied volatility surface). Trading options without thinking too much about implied volatities is of course a valid strategy -- maybe you just use them because you will automatically have a mechanism which limits losses on your positions. But I am just trying to give you an impression of the bigger picture. By buying the call option, you are getting the benefit of purchasing the underlying shares (that is, if the shares go up in value, you make money), but transferring the risk of the shares reducing in value. This is more apparent when you are using the option to offset an explicit risk that you hold. For example, if you have a short position, you are at unlimited risk of the position going up in value. You could decide you only want to take the risk that it might rise to $X. In that case, you could buy a call option with $X strike price. Then you have transferred the risk that the position goes over $X to the counterpart, since, even if the shares are trading at $X+$Y you can close out the short position by purchasing the shares at $X, while the option counterpart will lose $Y. There are usually so many different options around for the same stock that some are rarely traded. Especially if the price has moved since the option was issued, nobody might be interested in that particular option at that price anymore. So the asking price might be something that someone asked for ages ago and that is much higher than anyone would reasonably pay today.  With a bid of $20 and an ask of $30, nobody is trading, but the value of that option is somewhere between $20 and $30. If the value is below $25, someone will notice your $25 bid and sell. I can't speak for all brokerages but the one I use requires cash accounts to have cash available to purchase the stock in this situation. With the cash available you would be able to purchase the stock if the option was exercised.  Hope this helps I think George's answer explains fairly well why the brokerages don't allow this - it's not an exchange rule, it's just that the brokerage has to have the shares to lend, and normally those shares come from people's margin, which is impossible on a non-marginable stock. To address the question of what the alternatives are, on popular stocks like SIRI, a deep In-The-Money put is a fairly accurate emulation of an actual short interest.  If you look at the options on SIRI you will see that a $3 (or higher) put has a delta of -$1, which is the same delta as an actual short share. You also don't have to worry about problems like margin calls when buying options.  The only thing you have to worry about is the expiration date, which isn't generally a major issue if you're buying in-the-money options... unless you're very wrong about the direction of the stock, in which case you could lose everything, but that's always a risk with penny stocks no matter how you trade them. At least with a put option, the maximum amount you can lose is whatever you spent on the contract.  With a short sale, a bull rush on the stock could potentially wipe out your entire margin.  That's why, when betting on downward motion in a microcap or penny stock, I actually prefer to use options.  Just be aware that option contracts can generally only move in increments of $0.05, and that your brokerage will probably impose a bid-ask spread of up to $0.10, so the share price has to move down at least 10 cents (or 10% on a roughly $1 stock like SIRI) for you to just break even; definitely don't attempt to use this as a day-trading tool and go for longer expirations if you can. "When you buy a put option, you're buying the right to sell stock at the ""strike"" price. To understand why you have to pay separately for that, consider the other side of the transaction. If I agree to trade stock for money at above market rates, I need to make up the difference somewhere or face bankruptcy.  That risk of loss is what the option price is about. You might assume that means the market expects the price of AMD to fall to 8.01 from it's current price of 8.06 by the option expiration date. But that would also mean call options below the market price is worthless. But that's not quite true; people who price options need to factor in volatility, since things change with time. The price MIGHT fall, and traders need to account for that risk. So 1.99 roughly represents the probability of AMD rising to 10. There's probably some technical analysis one can do to the chain, but I don't see any abnormality of AMD here." Yes. There are levels of option trading permission. For example, I've never set myself up for naked put writing.  But, if you already have the call spread, buying back the shorted call will leave you with a long call. This wouldn't be an issue. As long as you have the cash/margin to buy back that higher strike call. A few observations - A limit order can certainly work, as you've seen.  I've put in such an order far beyond the true value, and gotten back a realistic bid/ask within 10 minutes or so. That at least gave me an idea where to set my limit.  When this doesn't work, an exercise is always another way to go. You'll get the full intrinsic value, but no time value, by definition.  Per your request in comment - You own a put, strike price $100. The stock (or ETF) is trading at $50. You buy the stock and tell the broker to exercise the put, i.e. deliver the stock to the buyer of the put. Depending on the day and even time, you'd get your $2 profit less the $5 commission. Jack's warning is correct, but more so for thinly traded options, either due to the options having little open interest or the stock not quite so popular. In your case you have a just-in-the-money strike for a highly traded stock near expiration. That makes for about the best liquidity one can ask for.  One warning is in order - Sometime friday afternoon, there will be a negative time premium. i.e. the bid might seem lower than in the money value. At exactly $110, why would I buy the option? Only if I can buy it, exercise, and sell the stock, all for a profit, even if just pennies. 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 You can*, if the market is open, in a normal trading phase (no auction phase), works, and there is an existing bid or offer on the product you want to trade, at the time the market learns of your order. Keep in mind there are 2 prices: bid and offer. If the current bid and current offer were the same, it would immediately result in a trade, and thus the bid and offer are no longer the same. Market Makers are paid / given lower fees in order to maintain buy and sell prices (called quotes) at most times. These conditions are usually all true, but commonly fail for these reasons: Most markets have an order type of market order that says buy/sell at any price. There are still sanity checks put in place on the price, with the exact rules for valid prices depending on the stock, so unless it's a penny stock you won't suddenly pay ten times a stock's value. *The amount you can buy sell is limited by the quantity that exists on the bid and offer. If there is a bid or offer, the quantity is always at least 1. The Bid price is simply the highest buy price currently being offered and the Ask price simply the lowest sell price being offered. The list of Bid and Ask prices is called the market depth. When the Bid and Ask prices match then a sale goes through. When looking to sell you would generally look at both the Bid and Ask prices. As a seller you want to be matched with the Bid price to get a sale, but you also need to check the current list of Ask prices. If the price you want to sell at is too high you will be placed down the Ask price list, and unless the price moves up to match your sell price you will not end up selling. On the other-hand, if your price to sell is too low and in fact much lower than the current lowest sell price you may get a quick sale but maybe at a lower price than you could have gotten. Similarly, when looking to buy, you would generally also look at both the Bid and Ask prices. As a buyer you want to be matched with the Ask price to get a sale, but you also need to check the current list of Bid prices. If the price you want to buy at is too low you will be placed down the Bid price list, and unless the price moves down to match your buy price you will no end up buying. On the other-hand, if your price to buy is too high and in fact much higher than the current highest buy price you may get a quick purchase but maybe at a higher price than you could have gotten. So, whether buying or selling, it is important to look at and consider both the Bid and Ask prices in the market depth. Not that I am aware. There are times that an option is available, but none have traded yet, and it takes a request to get a bid/ask, or you can make an offer and see if it's accepted. But the option chain itself has to be open. "The other two answers seem basically correct, but I wanted to add on thing:  While you can exercise an ""American style"" option at any time, it's almost never smart to do so before expiration.  In your example, when the underlying stock reaches $110, you can theoretically make $2/share by exercising your option (buying 100 shares @ $108/share) and immediately selling those 100 shares back to the market at $110/share.  This is all before commission. In more detail, you'll have these practical issues: You are going to have to pay commissions, which means you'll need a bigger spread to make this worthwhile.  You and those who have already answered have you finger on this part, but I include it for completeness. (Even at expiration, if the difference between the last close price and the strike price is pretty close, some ""in-the-money"" options will be allowed to expire unexercised when the holders can't cover the closing commission costs.) The market value of the option contract itself should also go up as the price of the underlying stock goes up.  Unless it's very close to expiration, the option contract should have some ""time value"" in its market price, so, if you want to close your position at this point, earlier then expiration, it will probably be better for you to sell the contract back to the market (for more money and only one commission) than to exercise and then close the stock position (for less money and two commissions). If you want to exercise and then flip the stock back as your exit strategy, you need to be aware of the settlement times.  You probably are not going to instantly have those 100 shares of stock credited to your account, so you may not be able to sell them right away, which could leave you subject to some risk of the price changing.  Alternatively, you could sell the stock short to lock in the price, but you'll have to be sure that your brokerage account is set up to allow that and understand how to do this." I don't know where your trade figures are from. ETrade, TD Ameritrade, Fidelity, etc all have trading costs under 10 USD per share, so I'm not sure where your costs are coming from. I doubt currency conversion or anything like that will double the cost. As for your question, the answer is: It depends How much trading will you do? In what types of investments? For example, Schwab charges no commission on ETF purchases, but this is not an advantage if you wont buy ETFs. Consider minimums. Different brokers have different minimum cash balance/deposit requirements, so make sure you can meet those. It's true that you can get real time quotes anywhere, but consider the other services. For example, TD Ameritrade pools research reports for many publicly traded companies which are nice to read about what analysts have to say. Different brokers given different research tools, so read about offerings and see what's most useful to you. You can open different brokerage accounts, but it's much more convenient to have a one-stop place where you can do all you trading. Pick a broker which is low cost and offers a variety of investments as well as good customer support and a straightforward system.