Reading a Position with the Greeks: Delta, Gamma, Theta and Vega

Advanced · 12:25

Two traders take opposite sides of the same straddle with a delta near zero, and a $3 jump makes one about $92 and costs the other the same. This lesson shows how to read a whole position with the Greeks.

After this lesson you can

  • Add up a position's delta leg by leg, with short options counted as negative
  • Explain gamma and why it is biggest near the strike and close to expiration
  • Compare theta with the daily move a long-gamma position needs to break even
  • Know when to stop trusting the Greeks and reprice a position instead
  • Read a calendar spread by its five numbers, see how a long straddle earns from the swings, and avoid the five mistakes

Chapters

  1. 0:00Delta near zero, opposite results
  2. 1:09Adding up a position
  3. 2:18How fast delta changes
  4. 3:33Where gamma is biggest
  5. 4:32Paying for movement
  6. 5:44One position, five numbers
  7. 7:03Small moves only
  8. 8:13Earning from the swings
  9. 9:19The seller's side of the swing
  10. 10:26Five mistakes
  11. 11:19The whole lesson on one screen

In Chinese: Lesson 33 · 把整个账户当成一笔来看

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