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Pricing Options: Time

How the passage of time affects option prices

Recap

You've done it! This is the end of the article – great work. Before we move on, let's do a little recap:

Option Prices & Time

  • Extrinsic value decays as time passes
  • Long options are disadvantaged by time decay
  • Short options benefit from time decay
  • Time decay is measured by Theta (Θ)
  • Higher theta levels imply greater risk
  • Theta levels increase in magnitude as expiration nears

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how the gears turn