{"id":175534,"date":"2020-08-31T16:26:00","date_gmt":"2020-08-31T20:26:00","guid":{"rendered":"https:\/\/ibkrcampus.com\/trading-lessons\/introduction-to-options-the-greeks\/"},"modified":"2023-12-28T14:30:20","modified_gmt":"2023-12-28T19:30:20","slug":"introduction-to-options-the-greeks","status":"publish","type":"trading-lessons","link":"https:\/\/www.interactivebrokers.com\/campus\/trading-lessons\/introduction-to-options-the-greeks\/","title":{"rendered":"Introduction to Options &#8211; The Greeks"},"content":{"rendered":"<p>The Options Greeks&nbsp;lesson&nbsp;is designed to familiarize traders with a set of risk factors used to monitor a portfolio&#8217;s profile (known as \u201c<strong>The Greeks<\/strong>\u201d). In this&nbsp;lesson, you will learn why some option prices are&nbsp;more or less responsive&nbsp;to changing prices in the value of the underlying security.<\/p>\n<p>In this&nbsp;lesson, we will explain the definition of each of the Greek variables and explain to you, using an interactive options calculator, what influences days to expiration, interest rates, and the proximity between the option strike price and the price of the underlying have on the price of an option over time.<\/p>\n<p><strong>Risk Measures: Introduction<\/strong><\/p>\n<p>When option traders understand what basic inputs determine the pricing model, they are ready to move into dealing with option portfolio\u2019s risk measures or \u201cGreeks\u201d. These risk variables are called \u201cthe Greeks\u201d because, with the exception of Vega, each risk measure is represented by a letter of the Greek alphabet. The Greeks are dependent upon the inputs for an option\u2019s pricing model.<\/p>\n<p>This&nbsp;lesson&nbsp;assumes that the viewer is familiar with basic options risks,&nbsp;strategies&nbsp;and terminology.&nbsp; As discussed in prior&nbsp;lessons, options trading provides additional leverage to trading equities, and thus carries increased risk.&nbsp;&nbsp;Options involve risk and are not suitable for all investors. For more information read the \u201cCharacteristics and Risks of Standardized Options\u201d. For a copy, call 312 542-6901.&nbsp;An option buyer can lose the entire premium. The option seller may have unlimited risk of loss.<\/p>\n<p>This lesson incorporates an<a href=\"https:\/\/www.optionseducation.org\/toolsoptionquotes\/optionscalculator\" target=\"_blank\" rel=\"noopener\"> online options calculator <\/a>from the Options Industry Council.&nbsp;It\u2019s&nbsp;a free interactive resource available from&nbsp;OptionsEducation.org<\/p>\n<p>Throughout this lesson we explain why each variable impacts the price of an options, and we use the calculator to illustrate those changes. Access the calculator to type the inputs on screen and note the change to call and put prices as&nbsp;you vary them.<\/p>\n<p><strong>Call Delta<\/strong><\/p>\n<p>Delta represents the&nbsp;theoretical&nbsp;change in an option\u2019s price for a&nbsp;$1&nbsp;change in the&nbsp;price of the&nbsp;underlying asset.<\/p>\n<p><img decoding=\"async\" class=\"alignnone size-medium wp-image-12207 lazyload\" data-src=\"\/campus\/wp-content\/uploads\/sites\/2\/2023\/01\/Delta-Call-Option.jpg\" alt=\"\" width=\"897\" height=\"506\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 897px; aspect-ratio: 897\/506;\">For a call option, Delta will range from 0 to 1.&nbsp; As the price of the underlying asset increases beyond the strike price and gets further in the money, the Delta will increase and approach 1, meaning that there is a greater change to the price of the option relative to the change in price of the underlying asset. An \u201cat the money\u201d option generally has a Delta of approximately 0.5. Alternatively, Delta can be thought of as the probability than an option will finish \u201cin the money.\u201d<\/p>\n<p><strong>Put Delta<\/strong><\/p>\n<p>For a put option, Delta will range from -1 to 0.&nbsp;&nbsp;As the price of the underlying asset decreases below the strike price and gets further in the money, the Delta will decrease and approach -1, meaning that there is a greater change to the price of the option relative to the change in price of the underlying asset An \u201cat the money\u201d option will have a Delta of -0.5. Alternatively, the Delta\u2019s absolute value can also be thought of as the probability than an option will land \u201cin the money\u201d.<\/p>\n<p><img decoding=\"async\" class=\"alignnone size-medium wp-image-12208 lazyload\" data-src=\"\/campus\/wp-content\/uploads\/sites\/2\/2023\/01\/Delta-Put-Option.jpg\" alt=\"\" width=\"838\" height=\"506\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 838px; aspect-ratio: 838\/506;\"><strong>Delta Explanation<\/strong><\/p>\n<ul>\n<li>As an example,&nbsp; if the underlying asset price were to rise from $35.90 to $36.90 (a $1.00 increase), the average Delta would approximate the change in the option price.<\/li>\n<li>Underlying Price, Strike Price, Interest Rate, Volatility and Days to Expiration inputs will have an impact on the Delta. You can change the model inputs in the Options Calculator and click \u201cCalculate\u201d to better understand the impact of the model inputs on the Delta.<\/li>\n<\/ul>\n<p><strong>Gamma<\/strong><\/p>\n<ul>\n<li>Gamma represents the rate of change of delta for a given change in the underlying asset\u2019s price.<\/li>\n<li>Gamma is largest \u201cat the money\u201d and becomes smaller as options move further into or out of the money.<\/li>\n<li>The change in an option\u2019s price (before expiration) is represented by a curved line and not a flat line.<\/li>\n<li>The Delta represents the change at any given point on the curved line, and the Gamma describes the change in the delta or curvature in the line.<\/li>\n<li>For calculus fans, it is the second order derivative. Understanding the Gamma in a portfolio is critical for a trader that is trying to&nbsp;continuously hedge a portfolio.<\/li>\n<\/ul>\n<p><img decoding=\"async\" class=\"alignnone size-medium wp-image-12209 lazyload\" data-src=\"\/campus\/wp-content\/uploads\/sites\/2\/2022\/11\/Gamma-1.jpg\" alt=\"\" width=\"871\" height=\"506\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 871px; aspect-ratio: 871\/506;\"><strong>Gamma Explanation<\/strong><\/p>\n<ul>\n<li>As an example, if the underlying asset price were to rise from&nbsp;$35.90 to $36.90&nbsp;($1.00), the old Delta plus the average Gamma would approximate the new Delta.<\/li>\n<li>Change the model inputs on the Options Calculator and click \u201cCalculate\u201d to better understand the impact of the model inputs on the Gamma.<\/li>\n<\/ul>\n<p><strong>Theta<\/strong><\/p>\n<p>Theta describes the relationship between time and the price of an option.<\/p>\n<p>Theta only impacts the extrinsic&nbsp;value&nbsp;of an option.&nbsp;That\u2019s&nbsp;because&nbsp;intrinsic&nbsp;value&nbsp;does not&nbsp;erode, it only moves with a change in the underlying asset price. As an option nears expiration, Theta will become increasingly negative.<\/p>\n<p><strong>Theta Explanation<\/strong><\/p>\n<p>The closer an option is to&nbsp;expiration,&nbsp;the&nbsp;less&nbsp;time value&nbsp;(extrinsic value)&nbsp;remains. Theta measures the approximate&nbsp;decline in an option\u2019s premium due to the passage of time.&nbsp; In other words, it measures that rate&nbsp;at&nbsp;which an option\u2019s extrinsic value is declining.<\/p>\n<p><strong>Theta Calculator<\/strong><\/p>\n<p>Change the&nbsp;Options Calculator&nbsp;model inputs and click \u201cCalculate\u201d to better understand the impact of the model inputs on the Theta.<\/p>\n<p><strong>Vega<\/strong><\/p>\n<p>Vega represents the change in an option\u2019s price due to a change in its implied volatility. Vega is always greatest for an \u201cat the money\u201d option and decreases as the underlying asset price moves increasingly \u201cinto the money\u201d&nbsp;or&nbsp;\u201cout of the money.\u201d<\/p>\n<p><img decoding=\"async\" class=\"alignnone size-medium wp-image-12210 lazyload\" data-src=\"\/campus\/wp-content\/uploads\/sites\/2\/2023\/01\/Vega.jpg\" alt=\"\" width=\"855\" height=\"506\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 855px; aspect-ratio: 855\/506;\"><strong>Vega Explanation<\/strong><\/p>\n<p>An increase in volatility of 1% will change the option\u2019s price by approximately the average of&nbsp;the&nbsp;Vega.<\/p>\n<p><strong>Vega Calculator<\/strong><\/p>\n<p>Change the model inputs&nbsp;on the Options Calculator&nbsp;and click \u201cCalculate\u201d to better understand the impact of the model inputs on the Vega.<\/p>\n<p><strong>Rho Definition<\/strong><\/p>\n<p>Rho represents an option\u2019s price sensitivity to interest rates. The greater the underlying asset price and&nbsp;remaining&nbsp;days to expiration, the greater the Rho.<\/p>\n<p><img decoding=\"async\" class=\"alignnone size-medium wp-image-12211 lazyload\" data-src=\"\/campus\/wp-content\/uploads\/sites\/2\/2023\/01\/Rho.jpg\" alt=\"\" width=\"861\" height=\"506\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 861px; aspect-ratio: 861\/506;\"><strong>Rho Explanation<\/strong><\/p>\n<p>As an example, if the interest rate were to rise from 3.5% to 4.5%, the average value of Rho would approximate the change in the option\u2019s price.<\/p>\n<p><strong>Rho Calculator<\/strong><\/p>\n<p>Change the model inputs&nbsp;on the Options Calculator&nbsp;and click \u201cCalculate\u201d to better understand the impact of the model inputs on the Rho.<\/p>\n<p><strong>Putting it Together: Price Model<\/strong><\/p>\n<p>Now&nbsp;let\u2019s&nbsp;put it all together.&nbsp;Using the following assumptions, we can see the estimated value of a&nbsp;call&nbsp;option.<\/p>\n<ul>\n<li>Let\u2019s&nbsp;use a&nbsp;Share&nbsp;Price&nbsp;of&nbsp;$35.90,<\/li>\n<li>A&nbsp;Strike&nbsp;Price&nbsp;of&nbsp;$40.00,<\/li>\n<li>And assume an&nbsp;Interest Rate&nbsp;of&nbsp;4&nbsp;percent,<\/li>\n<li>Let\u2019s&nbsp;assume an&nbsp;Implied&nbsp;Volatility&nbsp;reading of&nbsp;38.8% for the underlying,<\/li>\n<li>And say the option contracts has 38 days to expire.<\/li>\n<li>The Call Price works out to be almost 54-cents ($0.5388).<\/li>\n<\/ul>\n<p><img decoding=\"async\" class=\"alignnone size-medium wp-image-12212 lazyload\" data-src=\"\/campus\/wp-content\/uploads\/sites\/2\/2023\/01\/Options-Greeks.jpg\" alt=\"\" width=\"960\" height=\"469\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 960px; aspect-ratio: 960\/469;\"><strong>Delta<\/strong><\/p>\n<p>The measure returned for Delta is&nbsp;0.2214. This means that for every $1.00 move in the underlying asset\u2019s&nbsp;price the option&nbsp;value will change&nbsp;by approximately&nbsp;22-cents&nbsp;(ignoring the impact of Gamma). Alternatively, there is a 22% chance that the option will expire at or above the strike price of $40.00.<\/p>\n<p><strong>Gamma<\/strong><\/p>\n<p>The Gamma reading of&nbsp;0.0661&nbsp;tells us that should the underlying price rise by $1.00, then Delta will rise by approximately 6.6 cents, because of the curvature in the option\u2019s price line.<\/p>\n<p><strong>Theta<\/strong><\/p>\n<p>The reading&nbsp;of&nbsp;&nbsp;-0.0184&nbsp;for Theta tells us that the value of the&nbsp;option contract&nbsp;drops approximately 1.8 cents for each day that passes.<\/p>\n<p><strong>Vega<\/strong><\/p>\n<p>The Vega of&nbsp;0.0344&nbsp;tells us that if implied volatility were to increase from 38.8% to&nbsp;39.8%, then the&nbsp;value&nbsp;of the option would increase by approximately 3.4 cents.<\/p>\n<p><strong>Rho<\/strong><\/p>\n<p>The reading of 0.0077 for Rho tells us that if interest rates were to increase from 4% to 5%, the option\u2019s&nbsp;value&nbsp;would increase by approximately 0.77 cents.<\/p>\n<p><strong>Options Calculator<\/strong><\/p>\n<p>Now that we have covered the Greek risk factors, we encourage you to play with the&nbsp;<strong>free <a href=\"https:\/\/www.optionseducation.org\/toolsoptionquotes\/optionscalculator\" target=\"_blank\" rel=\"noopener\">OIC&nbsp;Options Calculato<\/a>r<\/strong> to understand how changes in&nbsp;all&nbsp;of&nbsp;the inputs&nbsp;are likely to&nbsp;affect an option\u2019s price and Greeks. It should be noted that inputs rarely change in isolation and so it is important to test the changing multiple inputs at the same time.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Learn why prices of some options are more or less responsive to changes in the value of the underlying security. Define each of the \u2018Greek\u2019 variables (Delta, Gamma, Theta, Vega, Rho); using an interactive options calculator.  Understand the factors that influence the price of an option over time, including days to expiration, interest rates, and the proximity between the option strike price and the price of the underlying.<\/p>\n","protected":false},"author":899,"featured_media":175540,"parent":0,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"contributors-categories":[13576],"traders-academy":[13126,13128,13132],"class_list":{"0":"post-175534","1":"trading-lessons","2":"type-trading-lessons","3":"status-publish","4":"has-post-thumbnail","6":"contributors-categories-interactive-brokers","7":"traders-academy-intermediate-trading","8":"traders-academy-level","9":"traders-academy-trading-lesson"},"pp_statuses_selecting_workflow":false,"pp_workflow_action":"current","pp_status_selection":"publish","acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.9 (Yoast SEO v27.3) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Archives | Traders&#039; Academy | IBKR Campus<\/title>\n<meta name=\"description\" content=\"Understand the factors that influence the price of an option over time, including days to expiration, interest rates, and the proximity between the...\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.interactivebrokers.com\/campus\/wp-json\/wp\/v2\/trading-lessons\/175534\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Introduction to Options - 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