# Black scholes call put option right

The Black-Scholes model assumes the risk-free interest rate is constant and known. There is no true risk-free interest rate however, . Government Treasury Bills (T-Bills) are often used to model a risk-free interest rate.

## Black-Scholes Model - QuickMBA

Dear Sir ,

thanks for the reply.. but i am not able to collect the Historical Volatility , Risk Free Rate,Dividened Yield data.. could u please send me one example file for the stock NIFTY.

Regards

### Black Scholes Option Calculator - Option Trading Tips

this model doesn t work, no matter what you put in on the basic page for values, it has an invalid name error (#name?) for all the results cells. Even when you first open the thing, the default values the creator put in don t even work

In the future we may wish to price many differing types of exotic options via Finite Difference Methods. Thus it is sensible to create a VanillaOption class to encapsulate this functionality. In particular, we are going to encapsulate the storage of the parameters of a European vanilla option. Despite the fact that the interest rate, $r$, and the volatility, $\sigma$, are not part of an option term sheet , we will include them as parameters for simplicity.

Ok, it s working now. I saved & closed the excel file, opened again, and the results were there, in the blue areas! FYI, I had enabled all the macros in Security of the macros . Can t wait to play with the file now.

Because 8775 dOne(S, X, T, r, v, d) v * Sqr(T) 8776 is the same thing as 8775 dTwo(S, X, T, r, v, d) 8776 .

If you are not familiar with the Black-Scholes model, its parameters, and (at least the logic of) the formulas, you may first want to see this page.

This page is a guide to creating your own option pricing Excel spreadsheet, in line with the Black-Scholes model (extended for dividends by Merton). Here you can get a ready-made Black-Scholes Excel calculator with charts and additional features such as parameter calculations and simulations.

hi, thanks for the worksheet. However, I am troubled by the calculated P/L on expiration. It should be made of two straight lines,joined at the strike price, right? but I did not get that. For example, for a put with strike $9, premium used is$, the P/L for underlying price of 7, 8, 9, 65 were , , -, -, when they should be , , -, -5,96, isn t that correct?

We're now ready to begin turning our mathematical algorithm into a C++ implementation. At this stage it isn't immediately obvious how we will go about doing this. One could create a monolithic procedural code to calculate the entire solution. However, frequent QuantStarters will know that this is a suboptimal approach for many reasons. Instead we will make use of the object-oriented paradigm, as well as previous code that we have already written, in order to save development time.