Options trading may seem overwhelming, but they're easy to understand if you know a few key points. Investor portfolios are usually constructed with several asset classes. These may be stocks, bonds, ETFs, and even mutual funds. Options are another asset class, and when used correctly, they offer many advantages that trading stocks and ETFs alone cannot.
- An聽option聽is a contract giving the buyer the right, but not the obligation, to buy (in the case of a call) or sell (in the case of a put) the underlying asset at a specific price on or before a certain date.
- People use options for income,聽to聽speculate,聽and to聽hedge risk.
- Options are聽known as derivatives聽because they derive their value from an underlying asset.
- A stock option contract typically represents 100 shares of the underlying stock, but options may be written on any sort of underlying asset from bonds to currencies to commodities.
What Are Options?
Options are contracts that give the bearer the right, but not the obligation, to either buy or sell an amount of some underlying asset at a pre-determined price at or before the contract expires. Options can be purchased like most other asset classes with brokerage investment accounts.
Options are powerful because they can enhance an individual鈥檚 portfolio. They do this through added income, protection, and even leverage. Depending on the situation, there is usually an option scenario appropriate for an investor鈥檚 goal. A popular example would be using options as an effective聽hedge聽against a declining stock market to limit downside losses. Options can also be used to generate recurring income. Additionally, they are often used for speculative purposes such as wagering on the direction of a stock.
There is no free lunch with stocks and bonds. Options are no different. Options trading involves certain risks that the investor must be aware of before making a trade. This is why, when trading options with a broker, you usually see a disclaimer similar to the following:
Options involve risks and are not suitable for everyone. Options trading can be speculative in nature and carry substantial risk of loss.
Options as Derivatives
Options belong to the larger group of securities known as聽derivatives. A derivative's price is dependent on or聽derived聽from the price of something else. As an example, wine is a derivative of grapes ketchup is a derivative of tomatoes, and a stock option is a derivative of a stock. Options are derivatives of financial securities鈥攖heir value depends on the price of some other asset. Examples of derivatives include聽calls, puts,聽futures,聽forwards,聽swaps, and聽mortgage-backed securities, among others.
Call and Put Options
Options are a type of聽derivative聽security. An option is a derivative because its price is intrinsically linked to the price of something else. If you buy an options聽contract,聽it grants you the right, but not the obligation to buy or sell an underlying asset at a set price on or before a certain date.
Call Option Example
A potential homeowner sees a new development going up. That person may want the right to purchase a home in the future, but will only want to exercise that right once certain developments around the area are built.
The potential home buyer would benefit from the option of buying or not. Imagine they can buy a call option from the developer to buy the home at say $400,000 at any point in the next three years. Well, they can鈥攜ou know it as a non-refundable deposit. Naturally, the developer wouldn鈥檛 grant such an option for free. The potential home buyer needs to contribute a down-payment to lock in that right.
With respect to an option, this cost is known as the聽premium. It is the price of the option contract. In our home example, the deposit might be $20,000 that the buyer pays the developer. Let鈥檚 say two years have passed, and now the developments are built and zoning has been approved. The home buyer exercises the option and buys the home for $400,000 because that is the contract purchased.
The market value of that home may have doubled to $800,000. But because the down payment locked in a pre-determined price, the buyer pays $400,000. Now, in an alternate scenario, say the zoning approval doesn鈥檛 come through until year four. This is one year past the expiration of this option. Now the home buyer must pay the market price because the contract has expired. In either case, the developer keeps the original $20,000 collected.
Call Option Basics
Put Option Example
Now, think of a put option as an insurance policy. If you own your home, you are likely familiar with purchasing homeowner鈥檚 insurance. A homeowner buys a homeowner鈥檚 policy to protect their home from damage. They pay an amount called the premium, for some amount of time, let鈥檚 say a year. The policy has a face value and gives the insurance holder protection in the event the home is damaged.
What if, instead of a home, your asset was a stock or index investment? Similarly, if an investor wants insurance on his/her S&P 500 index portfolio, they can purchase put options. An investor may fear that a bear market is near and may be unwilling to lose more than 10% of their long position in the S&P 500 index. If the S&P 500 is currently trading at $2500, he/she can purchase a put option giving the right to sell the index at $2250, for example, at any point in the next two years.
If in six months the market crashes by 20% (500 points on the index), he or she has made 250 points by being able to sell the index at $2250 when it is trading at $2000鈥攁 combined loss of just 10%. In fact, even if the market drops to zero, the loss would only be 10% if this put option is held. Again, purchasing the option will carry a cost (the premium), and if the market doesn鈥檛 drop during that period, the maximum loss on the option is just the premium spent.
Put Option Basics
Buying, Selling Calls/Puts
There are four things you can do with options:
- Buy calls
- Sell calls
- Buy puts
- Sell puts
Buying stock gives you a long position. Buying a call option gives you a potential long position in the underlying stock. Short-selling a stock gives you a short position. Selling a naked or uncovered call gives you a potential short position in the underlying stock.
Buying a put option gives you a聽potential聽short聽position in the underlying stock. Selling a naked, or unmarried, put gives you a potential long position in the underlying stock. Keeping these four scenarios straight is crucial.
People who buy options are called holders and those who sell options are called聽writers聽of options. Here is the important distinction between holders and writers:
- Call holders and put holders (buyers) are not obligated to buy or sell. They have the choice to exercise their rights. This limits the risk of buyers of options to only the premium spent.
- Call writers and put writers (sellers), however,聽are聽obligated to buy or sell if the option expires in-the-money (more on that below). This means that a seller may be required to make good on a promise to buy or sell. It also implies that option sellers have exposure to more, and in some cases,聽unlimited, risks.聽This means聽writers can lose much more than the price of the options premium.
Why Use Options
Speculation is a wager on future price direction. A speculator might think the price of a stock will go up, perhaps based on fundamental analysis or technical analysis. A speculator might buy the stock or buy a call option on the stock. Speculating with a聽call option鈥攊nstead of buying the stock outright鈥攊s attractive to some traders since options provide聽leverage. An聽out-of-the-money聽call option may only cost a few dollars or even cents compared to the full price of a $100 stock.
Options were really invented for hedging purposes. Hedging with options is meant to reduce risk at a reasonable cost. Here, we can think of using options like an insurance policy. Just as you insure your house or car, options can be used to insure your investments against a downturn.
Imagine that you want to buy technology stocks. But you also want to limit losses. By using put options, you could limit your downside risk and enjoy all the upside in a cost-effective way. For聽short sellers, call options can be used to limit losses if wrong鈥攅specially during a聽short squeeze.
How Options Work
In terms of valuing option contracts, it is essentially all about determining the probabilities of future price events. The more likely something is to occur, the more expensive an option would be that profits from that event. For instance, a call value goes up as the stock (underlying) goes up. This is the key to understanding the relative value of options.
The less time there is until expiry, the less value an option will have. This is because the chances of聽a price move聽in the underlying stock diminish as we draw closer to expiry. This is why an option is a聽wasting聽asset. If you buy a one-month option that is out of the money, and the stock doesn鈥檛 move, the option becomes less valuable with each passing day. Since time is a component to the price of an option, a one-month option is going to be less valuable than a three-month option. This is because with more time available, the probability of a price move in your favor increases, and vice versa.
Accordingly, the same option strike that expires in a year will cost more than the same strike for one month. This wasting feature of options is a result of聽time decay. The same option will be worth less tomorrow than it is today if the price of the stock doesn鈥檛 move.
Volatility also increases the price of an option. This is because uncertainty pushes the odds of an outcome higher. If the volatility of the underlying asset increases, larger price swings increase the possibilities of substantial moves both up and down. Greater price swings will increase the chances of an event occurring. Therefore, the greater the volatility, the greater the price of the option. Options trading and volatility are intrinsically linked to each other in this way.
On most U.S. exchanges, a stock option contract is the option to buy or sell 100 shares; that's why you must multiply the contract premium by 100 to get the total amount you鈥檒l have to spend to buy the call.
|What happened to our option investment|
|May 1||May 21||Expiry Date|
The majority of the time, holders choose to take their profits by trading out (closing out) their position. This means that option holders sell their options in the market, and writers buy their positions back to close. According to the聽CBOE, only about 10% of options are exercised, 60% are traded (closed) out, and 30% expire worthlessly.
Fluctuations in option prices can be explained by聽intrinsic value聽and聽extrinsic value, which is also known as聽time value. An option's premium is the combination of its intrinsic value and聽time value. Intrinsic value is the聽in-the-money聽amount of an options contract, which, for a call option, is the amount above the strike price that the stock is trading. Time value represents the added value an investor has to pay for an option above the intrinsic value. This聽is聽the extrinsic value or time value. So, the price of the option in our example can be thought of as the following:
|Premium =||Intrinsic Value +||Time Value|
In real life, options almost always trade at some level above their intrinsic value, because the probability of an event occurring is never absolutely zero, even if it is highly unlikely.
Types of Options
American and European Options
American options聽can be exercised at any time between the date of purchase and the expiration date.聽European options聽are different from American options in that they can聽only聽be exercised at the end of their lives on their expiration date. The distinction between American and European options has nothing to do with geography, only with early exercise. Many options on stock indexes are of the European type. Because the right to exercise early has some value, an American option typically carries a higher premium than an otherwise identical European option. This is because the early exercise feature is desirable and commands a premium.
There are also聽exotic options, which are exotic because there might be a variation on the payoff profiles from the plain vanilla options.聽Or they can become totally different products all together with "optionality" embedded in them. For example,聽binary options聽have a simple payoff structure that is determined聽if聽the payoff event happens regardless of the degree. Other types of exotic options include knock-out, knock-in,聽barrier options,聽lookback options,聽Asian options, and聽Bermudan options. Again, exotic options are typically for professional derivatives traders.
Options Expiration & Liquidity
Options can also be categorized by their duration. Short-term options are those that expire generally within a year. Long-term options with expirations greater than a year are classified as聽long-term equity anticipation securities or LEAPs. LEAPS are identical to regular options, they just have longer durations.
Options can also be distinguished by when their expiration date falls. Sets of options now expire weekly on each Friday, at the end of the month, or even on a daily basis. Index and ETF options also sometimes offer quarterly expiries.
Reading Options Tables
More and more traders are finding option data through online sources. (For related reading, see "Best Online Stock Brokers for Options Trading 2019") While each source has its own format for presenting the data, the key components generally include the following variables:
- Volume (VLM) simply tells you how many contracts of a particular option were traded during the latest session.
- The "bid" price is the latest price level at which a market participant wishes to buy a particular option.
- The "ask" price is the latest price offered by a market participant to sell a particular option.
- Implied Bid Volatility (IMPL BID VOL) can be thought of as the future uncertainty of price direction and speed. This value is calculated by an option-pricing model such as the聽Black-Scholes model and represents the level of expected future volatility based on the current price of the option.
- Open Interest (OPTN OP) number indicates the total number of contracts of a particular option that have been opened. Open interest decreases as open trades are closed.
- Delta聽can be thought of as a probability. For instance, a 30-delta option has roughly a 30% chance of expiring in-the-money.
- Gamma (GMM) is the speed the option is moving in or out-of-the-money.聽Gamma can also be thought of as the movement of the delta.
- Vega聽is a Greek value that indicates the amount by which the price of the option would be expected to change based on a one-point change in implied volatility.
- Theta is the Greek value that indicates how much value an option will lose with the passage of one day's time.
- The "strike price" is the price at which the buyer of the option can buy or sell the underlying security if he/she chooses to exercise the option.
Buying at the bid and selling at the ask is how聽market makers聽make their living.
The simplest options position is a聽long call聽(or put) by itself. This position profits if the price of the underlying rises (falls), and your downside is limited to loss of the option premium spent. If you simultaneously buy a call and put option with the same strike and expiration, you鈥檝e created a聽straddle.
This position pays off if the underlying price rises聽or聽falls dramatically; however, if the price remains relatively stable, you lose premium on both the call and the put. You would enter this strategy if you expect a large move in the stock but are not sure which direction.
Basically, you need the stock to have a move outside of a range. A similar strategy betting on an outsized move in the securities聽when you expect high volatility (uncertainty) is to buy a call and buy a put with different strikes and the same expiration鈥攌nown as a聽strangle.聽A strangle requires larger price moves in either direction to profit but is also less expensive than a straddle. On the other hand, being short either a straddle or a strangle (selling both options) would profit from a market that doesn鈥檛 move much.
Below is an explanation of straddles from my Options for Beginners course:
And here鈥檚 a description of strangles:
How to use Straddle Strategies
Spreads & Combinations
Spreads use two or more options positions of the same class. They combine having a market opinion (speculation) with limiting losses (hedging). Spreads often limit potential upside as well. Yet these strategies can still be desirable since they usually cost less when compared to a single options leg. Vertical spreads involve selling one option to buy another. Generally, the second option is the same type and same expiration, but a different strike.
A聽bull call spread, or聽bull call vertical spread, is created by buying a call and simultaneously selling another call with a higher strike price and the same expiration. The spread is profitable if the underlying asset increases in price, but the upside is limited due to the short call strike. The benefit, however, is that selling the higher strike call reduces the cost of buying the lower one. Similarly, a聽bear put spread, or bear put vertical spread, involves buying a put and selling a second put with a lower strike and the same expiration. If you buy and sell options with different expirations, it is known as a聽calendar spread or time spread.
Combinations are trades constructed with both a call and a put. There is a special type of combination known as a 鈥渟ynthetic.鈥 The point of a synthetic is to create an options position that behaves like an underlying asset, but without actually controlling the asset. Why not just buy the stock? Maybe some legal or regulatory reason restricts you from owning it. But you may be allowed to create a synthetic position using options.
A聽butterfly聽consists of options at three strikes, equally spaced apart, where all options are of the same type (either all calls or all puts) and have the same expiration. In a long butterfly, the middle strike option is sold and the outside strikes are bought in a ratio of 1:2:1 (buy one, sell two, buy one).
If this ratio does not hold, it is not a butterfly. The outside strikes are commonly referred to as the wings of the butterfly, and the inside strike as the body. The value of a butterfly can never fall below zero. Closely related to the butterfly is the condor - the difference is that the middle options are not at the same strike price.
Because options prices can be modeled mathematically with a model such as聽the Black-Scholes, many of the risks associated with options can also be modeled and understood. This particular feature of options actually makes them arguably聽less聽risky than other asset classes, or at least allows the risks associated with options to be understood and evaluated. Individual risks have been assigned Greek letter names, and are sometimes referred to simply as聽"the Greeks."
Below is a very basic way to begin thinking about the concepts of Greeks:
Using the Greeks to Understand Options
Options do not have to be difficult to understand once you grasp the basic concepts. Options can provide opportunities when used correctly and can be harmful when used incorrectly. (For related reading, see "Should an Investor Hold or Exercise an Option?")