Tagged Questions
1
vote
2answers
85 views
Relationship between European, American options volatility
Suppose, if the price of a European option (say a put) can be shown to be monotone in volatility (say for any maturity), does it follow that American options has to be monotone in volatility?
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3
votes
2answers
197 views
Black-Scholes and Fundamentals
So basically
$dS_t=\mu S_tdt+\sigma S_tdWt$
and
$\mu=r-\frac12\sigma^2$
I have just been thinking about this later equation. This is very interesting because it ties together risk-free ...
0
votes
2answers
203 views
Why the implied volatilities calculated are so different
I Calculated facebook option(expired in 12/4/13) Implied Volatility with the Bisection Method. The program will be attached at the end. The results for different strike prices are so different:
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0
votes
1answer
67 views
volatility Table and BS formula
assume I have implied FX volatility Delta-Term table from broker. I have time noticed as 2M, 3M. what do I have to put into BS formula, is it 2/12 or "count the business days"/"daycount basis"?
I am ...
3
votes
1answer
340 views
Can American options with no dividends and zero risk-free rate be treated as European?
Let's say you've got American options on a future of a stock index. There are no dividends, and no risk-free rate either (assume $r=0$). Can these options then be treated as European from the ...
7
votes
1answer
656 views
How should I estimate the implied volatility skew term when calculating the skew-adjusted delta?
I'm trying to come up with the implied volatility skew adjusted delta for SPY options. I'm working with the following formula:
Skew Adjusted Delta = Black Scholes Delta + Vega * Vol Skew Slope.
I ...
8
votes
1answer
293 views
What are the main differences in Jump Volatility and Local Volatility
Is a JV model simply Local Vol + Jump Diffusion?
If so, it seems logical that an existing JV model be able to be used for valuation of both Vanilla and Exotic options. Is this true? Does a Local ...
5
votes
1answer
338 views
Extensions of Black-Scholes model
For the Black-Scholes model my feeling is that the volatility parameter is like sweeping stuff under the rug.
Are there models which improve on the volatility aspect of Black-Scholes by adding other ...
9
votes
1answer
248 views
Appropriate measure of Volatility for economic returns from an asset?
I am doing research on uncertainty analysis and risk assessment for oil field development. For doing economic forecast and valuation I use Real Options theory, which is almost similar to theory used ...
