Covered call writers and put-sellers know that option value is impacted by the change in stock price by the amount of its Delta. Delta, one of the option Greeks, is defined as the amount an option value will change for every $1.00 change in share value. If a call option priced at $2.00 with a […]

## Why Would Call Option Value Decline If Stock Price Rises? Evaluating Option Greeks

Posted on December 26, 2015 by Alan Ellman in Investment Basics, Option Trading Basics, Options Calculations, Stock Option Strategies

## Calculating the Greeks Using an Options Calculator

Posted on September 26, 2015 by Alan Ellman in Investment Basics, Option Trading Basics, Options Calculations

The Greeks are a mathematical means of estimating the risk of stock options. Delta measures the change in the option price due to a change in the stock price, Gamma measures the change in the option delta due to a change in the stock price, Theta measures the change in the option price due to […]

## RHO: Why Interest Rates Effect Our Option Premiums

Posted on November 15, 2014 by Alan Ellman in Investment Basics, Option Trading Basics, Options Calculations, Stock Option Strategies

Interest rates and the option Greeks play an important role in understanding option trading basics. Rho, not considered a major Greek, measures the change in an option’s price resulting from a 1% change in interest rates. When interest rates do change, it is normally by 25 basis points, not a full percentage point and that’s […]

## Greeks: Factors that Influence our Covered Call Premiums

Posted on July 7, 2012 by Alan Ellman in Option Trading Basics

We have all heard the term “the Greeks” as it applies to stock options. Most of us know that these factors somehow explain how certain parameters can impact the value of an option premium. To avoid facing some members of the BCI community claiming that “this is all Greek to me”, this article will serve as […]

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