Charm

AAA

DEFINITION of 'Charm'

The rate at which the delta of an option or warrant will change over time. Charm refers to the second order derivative of an option's value - once to time and once to the price. It is also the derivative of theta, which measures the time decay of an option's value. This value decreases as the option approaches maturity.

INVESTOPEDIA EXPLAINS 'Charm'

Charm is used by investors who employ a delta-hedging option trading strategy, and provides the investor with information on the delta of an option on a per-year basis. As the number of days left on the options contract gets smaller and smaller, charm becomes more volatile and less accurate.




RELATED TERMS
  1. Delta

    The ratio comparing the change in the price of the underlying ...
  2. Theta

    A measure of the rate of decline in the value of an option due ...
  3. Delta Hedging

    An options strategy that aims to reduce (hedge) the risk associated ...
  4. Time Decay

    The ratio of the change in an option's price to the decrease ...
  5. Greeks

    Dimensions of risk involved in taking a position in an option ...
  6. Quantitative Analysis

    A business or financial analysis technique that seeks to understand ...
RELATED FAQS
  1. What risks should I consider taking a short put position?

    The risks to consider before taking a short put position are the odds of sustained weakness in the asset price and a spike ... Read Full Answer >>
  2. What happens if a software glitch fails to execute the strike price I set?

    If you've ever suffered the frustrating experience of having an order not filled or had a strike price fail to execute because ... Read Full Answer >>
  3. In what market situations might a short put be a profitable trade?

    Short puts would be a profitable trade in low-volatility bull markets or range-bound markets. Selling puts is a strategy ... Read Full Answer >>
  4. What is the relationship between implied volatility and the volatility skew?

    The volatility skew refers to the shape of implied volatilities for options graphed across the range of strike prices for ... Read Full Answer >>
  5. How is a short call used in a collar option strategy?

    An investor uses a short call sold above the current market price to collect a premium in a collar option strategy. The core ... Read Full Answer >>
  6. Why should investors consider the fully diluted share amount?

    Investors should consider a company's fully diluted share amount before purchasing the company's stock, because it could ... Read Full Answer >>
Related Articles
  1. Options & Futures

    An Introduction To Gamma-Delta Neutral Option Spreads

    Find the middle ground between conservative and high-risk option strategies.
  2. Options & Futures

    Getting To Know The "Greeks"

    Understanding price influences on options positions requires learning about delta, theta, vega and gamma.
  3. Options & Futures

    Capturing Profits With Position-Delta Neutral Trading

    This trading strategy will show you how to gain from a decline in implied volatility on any movement of the underlying.
  4. Options & Futures

    Options Trading Strategies: Understanding Position Delta

    Learn more about the position delta hedge ratio and how it can tell you the number of contracts needed to hedge a position in the underlying asset.
  5. Options & Futures

    Using "The Greeks" To Understand Options

    These risk-exposure measurements help traders detect how sensitive a specific trade is to price, volatility and time decay.
  6. Options & Futures

    Using Options Tools To Trade Foreign-Exchange Spot

    Find out how delta, gamma, risk reversals and volatility can all help predict movements in the cash market.
  7. Investing Basics

    What is a Greenshoe Option?

    A greenshoe option is a provision in an underwriting agreement that allows the underwriter to buy up to 15% of the shares in an IPO at the offer price.
  8. Investing Basics

    What Does a Clearing House Do?

    A clearing house is a third-party agency or separate entity that acts as a go-between for buyers and sellers in financial markets.
  9. Options & Futures

    How The New NYSE Binary Options Work

    The New York Stock Exchange has launched its own version of binary options called Binary Return Derivatives Options or ByRDs.
  10. Mutual Funds & ETFs

    4 Ways You Can Invest In Gold Without Holding It

    Owning gold can be a store of value and a hedge against unexpected inflation. Holding physical gold, however, can be cumbersome and costly. Fortunately, there are several ways to own gold without ...

You May Also Like

Hot Definitions
  1. National Currency

    The currency or legal tender issued by a nation's central bank or monetary authority. The national currency of a nation is ...
  2. Treasury Yield

    The return on investment, expressed as a percentage, on the debt obligations of the U.S. government. Treasuries are considered ...
  3. Bund

    A bond issued by Germany's federal government, or the German word for "bond." Bunds are the German equivalent of U.S. Treasury ...
  4. European Central Bank - ECB

    The central bank responsible for the monetary system of the European Union (EU) and the euro currency. The bank was formed ...
  5. Quantitative Easing

    An unconventional monetary policy in which a central bank purchases private sector financial assets in order to lower interest ...
  6. Current Account Deficit

    A measurement of a country’s trade in which the value of goods and services it imports exceeds the value of goods and services ...
Trading Center
×

You are using adblocking software

Want access to all of Investopedia? Add us to your “whitelist”
so you'll never miss a feature!