Why would someone want to sell call options?
You appear to be thinking of option writers as if they were individuals with small, nondiversified, holdings and a particular view on what the underlying is going to do.  This is not the best way to think about them. Option writers are typically large institutions with large portfolios and that provide services in all sorts of different areas. At the same time as they are writing calls on a particular stock, they are writing puts on it and options on other stocks.  They are buying and selling the underlying and all kinds of different derivatives.  They are not necessarily writing the option because they are expecting or hoping to benefit from a price move.  It's just small part of their business.  They write the option if the option price is good enough that they think they are selling it for very slightly more than it's worth.   Asking why an option writer creates a call is like asking why a grocery store keeps buying groceries from their distributors.  Don't they know the price of food may not always rise?  Sure, but their business is selling the food for slightly more than they pay for it, not speculating on what will happen to its price.  Most option writers are doing the same thing, except what they are buying and selling is sets of cash flows and risk.   As a general rule, the business model of option writers is to profit from the few cents of spread or mispricing, not from aggregate changes in the price of the underlying.  They should and often do maintain balanced portfolios so their option writing activities don't expose them to a lot of risk. Also note that there could be lots of reasons for writing options, even if you do have a particular view.  For example, perhaps the option writer thinks volatility of the underlying will decrease.  Writing a call could be part of an overall strategy that profits from this view. "Covered calls, that is where the writer owns the underlying security, aren't the only type of calls one can write. Writing ""uncovered calls,"" wherein one does NOT own the underlying, are a way to profit from a price drop. For example, write the call for a $5 premium, then when the underlying price drops, buy it back for $4, and pocket the $1 profit." I do this often with shares that I own - mostly as a learning/experience-building exercise, since I don't own enough individual stocks to make me rich (and don't risk enough to make me broke). Suppose I own 1,000 shares of X.  I don't expect my shares to go down, but I want to be compensated in case they do go down.  Sure, I could put in a stop-loss order, but another option is to sell a call above where the stock is now (out-of-the-money).   So I get the premium regardless of what happens.  From there three things can happen: So a covered call essentially lets you give up some upside for some compensation against downward moves.  Mathematically it's roughly equivalent to selling a put option - you make a little money (from the premium) if the stock goes up but can lose a lot if the stock plummets. So you would sell call options if: I have an example of a trade I made some time ago.  By entering the position as a covered call, I was out of pocket $5.10, and if the stock traded flat, i.e. closed at the same $7.10 16 months hence, I was up 39% or nearly 30%/yr. As compared to the stock holder, if the stock fell 28%, I'd still break even, vs his loss of 28%. Last, if the stock shot up, I'd get 7.50/5.10 or a 47% return, vs the shareholder who would need a price of $10.44 to reflect that return. Of course, a huge jump in the shares, say to $15, would benefit the option buyer, and I would have left money on the table. But this didn't happen. The stock was at $8 at expiration, and I got my 47% return. The option buyer got 50 cents for his $2 bet.  Note, the $2 option price reflected a very high implied volatility.
"This is a really bad idea. You are asking to be forced to pay for something at a time when you most likely NOT want to buy it. Why? There is no stability (much less any degree of predictability) to give up the right to control when and for how much you would be willing to own the S&P500. Just don't do it.....""generate stable income"" and ""selling puts"" is an oxymoron.  ===retired investment advisor" So, child, your goal is to make money? This is usually achieved by selling goods (say, lemonade) at a price that exceeds their cost (say, sugar, water and, well, lemons). Options, at first, are very much same in that you can buy the right to engage in a specific future trade. You make money in this situation if the eventual returns from the scheduled trade cover the cost of purchasing the option. Otherwise you can simply opt out of the trade -- you purchased the right to trade, after all, not any type of obligation. Makes sense? Good. Because what follows is what makes options a little different. That is, if you sell that same right to engage in a specific trade the situation is seemingly reversed: you lock in your return at the outset, but the costs aren't fully realized until the trade is either consumed or declined by the owner of the option. And keep in mind that it is always the owner of the option who is in the driver's seat; they may sell the option, hold on to it and do nothing, or use it to engage in the anticipated trade. And that's really all there's to it. "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." Here is a quick and dirty explanation of options. In a nutshell, you pay a certain amount to buy a contract that gives you the right, but not the obligation, to buy or sell a stock at a predetermined price at some date in the future. They come in a few flavors:  I'll give you $100 if you let me buy 10,000 shares of XYZ for $10 more   per share than it is trading at today any time before   August 10th. I'll give you $100 if you promise to buy 10,000 shares of XYZ from me   for $10 less per share than it is trading at today if I ask before August 10th. There are also two main types based on the expiration behavior:  There are lots of strategies that employ options, too many to go into.  Two key uses are.. Leverage: Buying Call options can give you a much higher return on your investment than just investing in the actual stock. However, with much higher risk of losing all of your investment instead of just some of it when the stock drops. Hedging: If you already own the underlying stock, put options can be used to buy down risk of serious drops in a holding. &gt; The only problem I see with stock options is that they expire  You're on to something: the reason why some prefer to write (sell) options instead of buying. Neutral to bullish on crude oil? Sell puts on /CL at 90-95% probability OTM. You keep your money if the underlying moves up or does nothing, within the days to expiration. "With stocks, you can buy or sell. If you sell first, that's called 'shorting.' As in ""I think linkedin is too high, I'm going to short it."" With options, the terminology is different, the normal process is to buy to open/sell to close, but if you were shorting the option itself, you would first sell to open, i.e you are selling a position to start it, effectively selling it short. Eventually, you may close it out, by buying to close.  Options trading is not for the amateur. If you plan to trade, study first and be very cautious." "Bull means the investor is betting on a rising market. Puts are a type of stock option where the seller of a put option promises to buy 100 shares of stock from the buyer of the put option at a pre-agreed price called the strike price on any day before expiration day.  The buyer of the put option does not have to sell (it is optional, thats why it is called buying an option).  However, the seller of the put is required to make good on their promise to the buyer. The broker can require the seller of the put option to have a deposit, called margin, to help make sure that they can make good on the promise.   Profit... The buyer can profit from the put option if the stock price moves down substantially.   The buyer of the put option does not need to own the stock, he can sell the option to someone else.  If the buyer of the put option also owns the stock, the put option can be thought of like an insurance policy on the value of the stock.  The seller of the put option profits if the stock price stays the same or rises.  Basically, the seller comes out best if they can sell put options that no one ends up using by expiration day. A spread is an investment consisting of buying one option and selling another. Let's put bull and put and spread together with an example from Apple. So, if you believed Apple Inc. AAPL (currently 595.32) was going up or staying the same through JAN you could sell the 600 JAN put and buy the 550 put.  If the price rises beyond 600, your profit would be the difference in price of the puts.  Let's explore this a little deeper (prices from google finance 31 Oct 2012): Worst Case:  AAPL drops below 550.  The bull put spread investor owes (600-550)x100 shares = $5000 in JAN but received $2,035 for taking this risk. EDIT 2016: The ""worst case"" was the outcome in this example, the AAPL stock price on options expiry Jan 18, 2013 was about $500/share. Net profit = $2,035 - $5,000 = -$2965 = LOSS of $2965 Best Case:  AAPL stays above 600 on expiration day in JAN. Net Profit = $2,035 - 0 = $2035 Break Even:  If AAPL drops to 579.65, the value of the 600 JAN AAPL put sold will equal the $2,035 collected and the bull put spread investor will break even. Commissions have been ignored in this example." The important thing to realize is, what would you do, if you didn't have the call? If you didn't have call options, but you wanted to have a position in that particular stock, you would have to actually purchase it. But, having purchased the shares, you are at risk to lose up to the entire value of them-- if the company folded or something like that.  A call option reduces the potential loss, since you are at worst only out the cost of the call, and you also lose a little on the upside, since you had to pay for the call, which will certainly have some premium over buying the underlying share directly. Risk can be defined as reducing the variability of outcomes, so since calls/shorts etc. reduce potential losses and also slightly reduce potential gains, they pretty much by definition reduce risk. It's also worth noting, that when you buy a call, the seller could also be seen as hedging the risk of price decreases while also guaranteeing that they have a buyer at a certain price. So, they may be more concerned about having cash flow at the right time, while at the same time reducing the cost of the share losing in value than they are losing the potential upside if you do exercise the option. Shorts work in the same way but opposite direction to calls, and forwards and futures contracts are more about cash flow management: making sure you have the right amount of money in the right currency at the right time regardless of changes in the costs of raw materials or currencies. While either party may lose on the transaction due to price fluctuations, both parties stand to gain by being able to know exactly what they will get, and exactly what they will have to pay for it, so that certainty is worth something, and certainly better for some firms than leaving positions exposed. Of course you can use them for speculative purposes, and a good number of firms/people do but that's not really why they were invented. I think the best answer that doesn't make the buyer look like a moron is this. Buyer had previously sold a covered call.  They wanted to act on a different opportunity so they did a closing buy/write with a spread of a couple cents below asking for the stock, but it dipped a couple cents and the purchase of those options to close resolved at 4 cents due to lack of sellers. 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. "During market hours, there are a lot of dealers offering to buy and sell all exchange traded stocks. Dealers don't actually care about the company's fundamentals and they set their prices purely based on order flow. If more people start to buy than sell, the dealer notices his inventory going down and starts upping the price (both his bid and ask). There are also traders who may not be ""dealers"", but are willing to sell if the price goes high enough or buy if the price goes low enough. This keeps the prices humming along smoothly. During normal trading hours, if you buy something and turn around and sell it two minutes later, you'll probably be losing a couple cents per share. Outside normal market hours, the dealers who continue to have a bid and ask listed know that they don't have access to good price information --  there isn't a liquid market of continuous buying and selling for the dealer to set prices he considers safe. So what does he do? He widens the spread. He doesn't know what the market will open tomorrow at and doesn't know if he'll be able to react quickly to news. So instead of bidding $34.48 and offering at $34.52, he'll move that out to $33 and $36. The dealer still makes money sometimes off this because maybe some trader realized that he has options expiring tomorrow, or a short position that he's going to get a margin call on, or some kind of event that pretty much forces him to trade. Or maybe he's just panicking and overreacting to some news. So why not trade after hours? Because there's no liquidity, and trading when there's no liquidity costs you a lot." "The two dimensions are to open the trade (creating a position) and to buy or sell (becoming long or short the option). If you already own an option, you bought it to open and then you would sell it to close. If you don't own an option, you can either buy it to open, or sell it (short it) to open. If you are already short an option, you can buy it back to close. If you sell to open covered, the point is you're creating a ""covered call"" which means you own the stock, and then sell a call. Since you own the stock, the covered call has a lot of the risk of loss removed, though it also subtracts much of the reward possible from your stock." There is less liquidity because they are less volatile. Option traders aren't exactly risk averse (read: are degenerate gamblers) and the other market participants that use options don't have much use for deep in the money options. Also, just trade more liquid assets and equities if you want liquid options. At-the-money options, and at-the-money options strategies have hundreds and thousand percent payoffs on relatively mundane price changes in the underlying asset. Good questions. I can only add that it may be valuable if the company is bought, they may buy the options. Happened to me in previous company. "This is the best tl;dr I could make, [original](https://www.bloomberg.com/news/articles/2017-06-19/oil-s-slide-stalls-as-investors-weigh-stockpiles-against-libya) reduced by 70%. (I'm a bot) ***** &gt; The amount of oil stored in tankers reached a 2017 high of 111.9 million barrels earlier this month, according to Paris-based tracking company Kpler SAS. Oil has slipped below $45 a barrel as supplies in the U.S. remain plentiful and drillers continue to add rigs, raising concerns output cuts by the Organization of Petroleum Exporting Countries and allies including Russia won&amp;#039;t succeed in draining bloated stockpiles.  &gt; Crude stockpiles remain more than 100 million barrels above the five-year average, according to data from the EIA. 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