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Stock Options Explained

Updated on April 9, 2009

An Investment Management Tool

An option is simply the right, for a specified period of time, to buy or sell an item at a guaranteed price. Stock options then, are rights to buy or sell shares of stock at a guaranteed price during the life of the option.

There are two types of stock options - "puts" which give the holder the right to sell the stock at guaranteed price; and, "calls" which give the holder the right to buy the stock at a guaranteed price. Of course, you have to pay to purchase a stock option. The investor who owns the stock in question sells the option. If the option is exercised then the stock must be sold to the holder of the option if the option is a call (which gives the right to purchase the stock) and the stock must be purchased by the holder if the option is a put (which gives the right to sell the stock).

To the uninitiated, stock options might seem like gambling and some of those operating in the options market are essentially gambling. However, unlike gambling, in which money simply moves from one person to another with no new value created, stock options do perform a socially useful and productive service.

The most common use of call options occurs when an owner of a certain stock is unsure as to whether the price will rise or fall in the next three months. So, this investor "writes" (sellers of options are said to "write" the option) an option contract that specifies sale price higher than the current price of the stock and sells it in the market. If the price of the stock rises to the price specified in the contract (called the "strike" price) the owner will have to sell it. Granted, if the stock keeps rising the writer of the option loses the opportunity for a windfall profit. However, an option strategy like this is a conservative one designed to lock in a predetermined profit and not make a windfall. If, on the other hand the stock never rises above the strike price the seller of the call pockets the price received for the option and keeps the stock.

A second common use of call options involves the giving of stock options to managers, and sometimes employees, of a business as an incentive to work harder to increase revenue and profits. When profits increase the price of the stock usually rises and this becomes a bonus for good work at no cost to the company. The stock here is the stock of the company issuing the option and the shares upon which the options are written are stock that the company has previously purchased (companies can, and due, purchase shares of their own stock and this is called "treasury" stock). In this scenario the options are written for a much longer period than the usual three months and if the stock price has risen above the strike price when the option comes due the employee can exercise the option, buy the stock at the lower strike price and resell it at the higher market price and pocket the profit (actually, there is a market for options and the value of the options increases in proportion to the increase in stock so, in reality, the employee simply sells the option and pockets the profit). Of course, if the stock price has not increased the option expires worthless.

When a person writes a put they are promising to purchase the stock from the buyer of the put at an agreed upon price. An example of the use of a put would be an investor who expects the price of a stock to fall. This investor then borrows stock from someone who owns it, promising to replace it by a specified future date and paying a fee to the owner of the stock. If the stock falls in price as expected the investor buys the shares back at the new, lower price and gives them back to the person from whom he borrowed them. Selling stock you do not own is called "selling short" and it is risky because the short seller can lose money if the stock's price rises rather than falls. To protect themselves against this a short seller can sell a put thereby limiting his loss if the stock price doesn't fall.

Who would purchase a put? Consider the case where a person dies and leaves an estate containing a large number of shares in a company. The family of the deceased needs the money represented by the stock and want the executor to sell the stock and invest it in something more conservative. But it will take a few months before the estate is settled and the court allows the sale of the stock. Fearing that the stock may fall in value, the executor buys the put giving the estate the right, but not the obligation, to sell the stock at the strike price which is close to the current price. If the price of the stock rises the heirs get more money, but, if the price falls the heirs are guaranteed the strike price.


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    • profile image

      options trading 

      8 years ago

      I really appreciate your post and you explain each and every point very well.Thanks for sharing this information.And I’ll love to read your next post too.

      "options trading

    • profile image


      8 years ago

      The risk here is that the stock price doesn't move and the option expiers leaving the speculator out by the few hundred dollars paid for the option.




    • profile image


      8 years ago

      Hi there. that's an awesome article ! I liked it , I especially like the way you emphasize on research...

    • reviewadon profile image


      9 years ago

      thanks for putting in the time with this hub, info really helped me out.

    • profile image


      9 years ago

      I found the angle about a person handling an estate an unusual one. It's not everyday people think about handling post mortem affairs of someone with an investment portfolio but your point is a good one.

    • avatarlagi profile image


      10 years ago

      optionis part derrivatives transaction right, a little bit confusing to me, right now I prefer low risk investment :)

    • profile image


      11 years ago

      Great hub, Anything you do without the proper research and you do not know the odds ahead of time is called gambling: stocks, options, new job, marriage, etc..

    • profile image


      11 years ago

      Good article. I'm now hoping to find a good book or two on the subject as well. Thx

    • Chuck profile imageAUTHOR

      Chuck Nugent 

      12 years ago from Tucson, Arizona

      Thanks for the comment Paul, glad you enjoyed the article. I haven't done a lot of research on options other than a little unsuccessful speculation buying calls on gold mining shares years ago when I was young, single and could afford to lose money. Since then, my options experience has been confined to trying to explain them and their uses in understandable terms to my students. Chuck

    • Paul Edmondson profile image

      Paul Edmondson 

      12 years ago from Burlingame, CA

      Hi Chuch, Fantastic Hub. Options can be a bit confusing. Have you done any research on the strategy of collaring with options?

    • Chuck profile imageAUTHOR

      Chuck Nugent 

      12 years ago from Tucson, Arizona

      Thanks for the comment. Options only involve gambling or speculating when you you purchase an existing option without any stock to cover it or when you write a put or call without owning the underlying stock (in these cases you have to borrow the stock from your broker and then be prepared to purchase stock to replace this stock if your strategy doesn't work as planned).

      Those engaging these riskier strategies do perform a service though in that they provide the extra participants needed in the market so that those who are using options as a conservative hedging strategy (which is not gambling or speculating) have buyers available and waiting. Without these people who are using options to speculate, the only way a person hedging a position could execute the strategy would be if they could find some other investor trying to do the same thing in the opposite direction.

      Also, the buying of options for speculation purposes only is a means by which one can take advantage of an anticipated rise or fall in a stock without having to go to the expense of actually buying the stock. An options buyer can have access to several hundred or thousand shares of stock for a relatively small investment. A rise of a dollar a share on 10,000 shares is a $10,000 gross return. With options one does not have to have the large amounts of money needed to purchase 10,000 shares of a stock costing $15, $30, $50 or more per share in order to take advantage of an anticipated move. The risk here is that the stock price doesn't move and the option expiers leaving the speculator out by the few hundred dollars paid for the options.

      Thanks again for the comment.

    • profile image


      12 years ago

      Interesting article. Ido not study the maarket enought to "gamble" in the option market.


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