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The implied volatility in the Black-Scholes framework is not a constant but a function of both the strike price (“smile/skew”) and the time to expiry. A popular approach to recovering the volatility surface is through the use of deterministic volatility function models via Dupire's equation. A new method for volatility surface calibration based on the Mellin transform is proposed. An explicit formula for the volatility surface is obtained in terms of the Mellin transform of the call option price with respect to the strike price, and a numerical algorithm is provided. Results of numeri...

Shannon: and who knows when that will be? let's talk about it now with politics editor of the halftime report and author of every man a king. welcome. let's start with the gop race, the only one with challenges for jim jordan and kevin mccarthy but mccarthy has detractors. we went to be very clear the position of our activist is if the definition of insanity is doing the same thing over and over again and expecting a different result a vote for kevin mccarthy for minority leader is insanity. >> not in a good way. not a fun insanity. the problem jim jordan has, they have the inverse problem of ...

>> shannon: who knows when that will be. thank you. let's talk about it with fox news politics editor chris stirewalt. and author of "every man a king," including him. let's start with the g.o.p. race. the only thing where there is this challenge, jim jordan and kevin mccarthy. mccarthy has some detractors. saying "we want to be clear that the position of our activists is that if the definition of insanity is doing the same thing over and over again and expecting a different result, then a vote for kevin mccarthy is a vote for insanity." >> and not in a good way. the problem jim jordan has is ...

Look at what mitch mcconnell said to local kentucky paper. he was -- we know wind is going to be in our face. we don't know whether it is going to be a category 3, 4 or 5. so it is a hurricane warning. >> it is definitely a hurricane warning. that was before the prospect of trade war which turned these hurricane winds into gale-force winds. the chinese are not dumb. their wisconsin cheese, kentucky bourbon. democrats are having the inverse problem, who hates the president more, who can be tougher on the president. as the democratic campaign committee has already warned that doesn't appeal to t...

Change sells when you are 18-years-old it has a lot of energy behind it when your friends are doing it all the more. when you think about 50% of college graduates not being able to find a job, unprecedented spending and expansion of government it makes you think seriously about the issues. >> mike: sam, thank you. peter? >> last row christopher. >> hi. i have the inverse problem, i have three jobs. me, i supported barack obama in 2008. one of the things for me going to cause me to vote for him again in 2012 is the affordable care act. 6.6 million americans are covered under that mandate that a...