CFA CFA Level 2 CFA Lvl 2 Derivatives. Risk Neutral, No arbitrage

CFA Lvl 2 Derivatives. Risk Neutral, No arbitrage

  • This topic has 1 reply, 2 voices, and was last updated Mar-19 by ec_test.
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    • projectpat

      Hi guys,

      Little confused about some of the derivatives stuff. What is the difference or the relationship between the risk neutral probability model of valuing calls puts, and the no arbitrage, and expectations approaches. Should they be considered as separate models?

    • ec_test

      Hi there!

      They are different models:

      1. Binomial model – Uses up and down risk-adjusted probabilities
      Up probability = 1+Rf-D/U-D

      2. When you say the “no-arbitrage,” model I’m assuming you mean the European Put-Call Parity equation from which you could derive the price of a call or a put.

      C0 + PV(Bond)=P0 + Long Stock

      3. Expectation approach – It is the Black-Scholes-Merton Model

      Yes, they are different models and the vignettes will generally tell you which model to use to calculate the value of the call or put.   

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