Why give up upside with a call spread, how can calls and puts span any payoff, and what is the VIX really measuring?
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The 50/60 call spread
Draw the payoff of buying the 50 call and writing the 60 call, zero below 50 and capped at 10 above 60, and record what the written call's premium buys and what it gives up.
The butterfly spread as a bet against volatility
Record that it pays while the stock stays within a range and nothing after a violent move, and name the gains at both ends it gives up.
Spanning: any payoff from calls and puts
State that any payoff can be approximated by a portfolio of calls and puts, and assemble one kinked payoff of your own from a few options as the example.
Implied volatility and the VIX
Describe inverting an observed option price for the volatility given , and , define the VIX as 30-day expected S&P 500 volatility, and contrast forward-looking with historical volatility using October 2008 levels.