Before we devote our attention to more sophisticated option applications, it is important that we introduce a basic option foundation. While this introduction to options will be descriptive in its scope, its coverage will by no means be exhaustive. The sheer magnitude of option terminology and strategy could comprise an entire book on its own, and that is not our primary focus. For us to give our interpretation of existing material is much like making an entire career out of singing covers of popular songs of the past. Therefore, we will only be addressing the items necessary to understanding option basics and the techniques we will be presenting throughout the book. This simple introduction is tailored to those who are unfamiliar with options.
Whether they apply to stocks, indices, or futures, all options work in the same manner. Simply stated, an option is a financial instrument that allows the owner the right, but not the obligation, to acquire or to sell a predetermined number of shares of stock or futures contracts in a particular asset at a fixed price on or before a specified date. With each option contract, the holder can make any of three possible choices: exercise the option and obtain a position in the underlying asset; trade option, closing out the trader's position in the contract by performing an offsetting trade; or let the option expire if the contract lacks value at expiration, losing only what was paid for the option. We will discuss the benefits and implications of each action later in this chapter.
Option contracts are identified using quantity, asset expiration date, strike price, type, and premium. With the exception of the option's premium, each of these items is standardized upon issuance of a listed option contract. In other words, once an option contract is created, its rights are static; the price that one would pay for those rights is not; it is dynamic and determined by market forces. Seeing as there are many items which make up the definition of an option contract, it is important that each be addressed before moving on.

The first aspects of an option contract is the option's quantity. The number of shares or contracts that can be obtained upon exercising an exchange-listed option contract is standardized. Each stock option contract allows the holder of that option to control 100 shares of the underlying security while each futures option contract can be exercised to obtain one contract in the underlying futures contract.

Futures are leveraged assets typically representing a large, standardized quantity of an underlying security which expire at some predetermined date in the future. Each futures option contract allows the holder to control the total number of units that comprise the futures contract until the option is liquidated, but no later than its expiration date.

Another item that identifies the option contract is the asset itself. The asset refers to the type of investment that can be obtained by the option holder. This asset could be a futures contract, shares of stock in a company, or a cash settlement in the case of an index contract.

The type of option is critical in determining the trader's market outlook. Unlike trading stocks or futures themselves, option trading is not simply being long a particular market or short a particular market. Rather, there are two types of options, call options and put options, and two sides to each type, long or short, allowing the trader to take any of four possible positions. One can buy a call, sell a call, buy a put, sell a put, or any combination thereof. It is important to understand that trading call options is completely separate from trading put options. For every call buyer there is a call seller; while for every put buyer there is a put seller. Also keep in mind that option buyers have rights, while option sellers have obligations. For this reason, option buyers have a defined level of risk and option sellers have unlimited risk.

A call option is a standardized contract that gives the buyer the right, but not the obligation, to purchase a specific number of shares or contracts of an underlying security at the option's strike prices, or exercise price, sometime before the expiration date of the contract. Buying a call contract is similar to taking a long position in the underlying asset, and one would purchase a call option if one believed that the market value of the asset was going appreciate before the date the option expires. The most trader can lose by purchasing a call option is simply the price that he or she pays for the option; the most the trader can make is unlimited.

On the other side of the transaction, the seller, or writer, of a call options has the obligation, not the right, to sell a specific number of shares or contracts of an asset to the option buyer at the strike price, if the option is exercised prior to its expiration date. Selling a call contract acts as a proxy for a short position in the underlying asset, and one would sell a call option if one expected that the market value of the asset would either decline or move sideways. (See Payoff Diagram)

The most an option seller can make on the trade is the price he or she initially receives for the option contract; the most the trader can lose is unlimited. In order to offset a long position in a call option contract, one must sell a call option of the same quantity, type, expiration date, and strike price. Similarly, in order to offset a short position in a call option contract, one must buy a call option of the same quantity, type, expiration date, and strike price.

Long

With respect to this booklet's usage of the word, long describes a position (in stock and/or options) in which you have purchased and own that security in your brokerage account. For example, if you have purchased the right to buy 100 shares of a stock, and are holding that right in your account, you are long a call contract. If you have purchased the right to sell 100 shares of a stock, and are holding that right in your account, you are long a put contract. If you have purchased 1,000 shares of stock and are holding that stock in your brokerage account, or elsewhere, you are long 1,000 shares of stock.
When you are long an equity option contract:
You have the right to exercise that option at any time prior to its expiration.
Your potential loss is limited to the amount you paid for the option contract.

Short

With respect to this booklet's usage of the word, short describes a position in options in which you have written a contract (sold one that you did not own). In return, you now have the obligations inherent in the terms of that option contract. If the owner exercises the option, you have an obligation to meet. If you have sold the right to buy 100 shares of a stock to someone else, you are short a call contract. If you have sold the right to sell 100 shares of a stock to some-one else, you are short a put contract. When you write an option contract you are, in a sense, creating it. The writer of an option collects and keeps the premium received from its initial sale.
When you are short (i.e., the writer of ) an equity option contract:

• You can be assigned an exercise notice at any time during the life of the option contract. All option writers should be aware that assignment prior to expiration is a distinct possibility.

• Your potential loss on a short call is theoretically unlimited. For a put, the risk of loss is limited by the fact that the stock cannot fall below zero in price. Although technically limited, this potential loss could still be quite large if the underlying stock declines significantly in price.

A put option is a standardized contract that gives the buyer the right, but not the obligation, to sell a predetermined number of shares or contracts of an underlying security at the option's strike price, or exercise price, sometime before the expiration date of the contract.

A put contract is similar to taking a short position in the underlying asset, and one could purchase a put option contract if one believed that the market price of the asset was going to decline at some point before the date the option expires. The most a trader can lose by purchasing a put option is simply the price that he or she pays for the option; the most the trader can make is unlimited (in reality, it is the full value of the underlying asset which is realized if its price declines to zero).

Conversely, the seller, or writer, of a put option has the obligation, not the right, to buy a specific number of shares or contracts of an asset to the option buyer at the strike price, assuming the option is exercised prior to its expiration date. Selling a put contract acts as a substitute for a long position in the underlying asset, and a trader would sell a put contract if he or she expected the market value of the asset to either increase or move sideways. Again, the most an option seller can make on the trade is the price he or she initially receives for the option contract; the most the seller can lose is unlimited (in reality, the most one can lose is the full value of the underlying asset which is realized if its price declines to zero). (See Payoff Diagram)

In order to offset a long position in a put option contract, one must sell a put option of the same quantity, type, expiration date, and strike price. Similarly, in order to offset a short position in a put option contract, one must buy a put option of the same quantity, type, expiration date, and strike price.