Understanding Theta

Understanding Theta: The Silent Killer of Option Buyers

Nov 13, 2025

In this lesson, we explored Theta, one of the most important — and most overlooked — Greeks in options trading.

Theta tells you how much value your option is expected to lose each day just from the passage of time. As expiration approaches, this time decay accelerates, especially in the final 30 days. 

If you’re buying options without understanding Theta, you’re likely bleeding money and don’t even realize it. In this video, I showed:

  • A Theta decay curve to visualize how quickly time value disappears
  • A sample options chain to see real Theta values in action
  • The difference between being on the right vs wrong side of Theta

Remember, time decay never sleeps — so you need to either use it to your advantage or defend against it properly.

If you want to truly understand options, you must master the Greeks. This lesson is your first step in understanding how time works against you or for you in every single trade. 

🎥 Watch the full video above — and if you have a question, just drop it in the comments. I might cover it in a future lesson.

 

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