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- Author: Alain Mercier
-
- Differences with the previous version (v1.1):
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- - Adding put valuation
- - Adding iota and epsilon derivatives
- - Correction in the vega formula
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-
- Program: The Black and Scholes spreadsheet
-
- Black v2.0 is a freeware program for the evaluation of a stock option using the Black and
- Scholes model ajusted for dividend. It gives the option value, delta, gamma, vega, theta
- iota and epsilon for call and put. This is an Excel 4 sheet and it can
- evaluate call and put stock option.
-
- The variables you need to input in the spreadsheet are the following :
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- Name of the variable Column and cell
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- Riskless rate F2
- Company name (optional) A6
- Stock price B6
- Strike price C6
- Expiration date D6
- Annual Standard deviation G6
- Annual dividend H6
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- Enter these variables just like the example given in the spreadsheet and that it. All
- the other values needed for the evaluation are calculated by the spreadsheet.
-
- The various derivatives that the Balck and Scholes model provides give us
- the variation in the option value for a variation of one unit in a specific
- element. In this spreadsheet here is their name an what they mean:
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- Name Definition
- ---- ------------
- delta Give the variation in the option value for a variation of one unit(1 $) in the price of the underlying stock.
- gamma Give the variation in delta for a variation of one unit(1$) in the price of the underlying stock.
- theta Give the variation in the option value for a variation of one unit(1 day) in the time to expiration of the option.
- vega* Give the variation in the option value for a variation of one unit(1 %) in the standard deviation of the option.
- iota Give the variation in the option value for a variation of one unit(1 %) in the riskless rate.
- epsilon Give the variation in the option value for a variation of one unit(1 $) in the strike price of the option.
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- * vega is also called eta, kappa, omega as well as epsilon in the litterature.
- Be cautious: Epsilon in this spreadsheet refer to the variation in the strike price.
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- To calculate the implied volatility of a stock go to the option value cell
- and use the Gold Seek item under the Tool menu in Excel.
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-
- For more information on the Black and Scholes model please refer to any good
- finance book.
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- This spreadsheet is freely distributable.
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- Thanks for using my program !
-
- Agreement
- NO WARRANTY: This software claims no warranty, implied or otherwise. This
- software is provided "AS IS". IF YOU DESAGREE DONÆT USE IT.
-
- NO LIABILITY FOR CONSEQUENTIAL DAMAGES: IN NO EVENT SHALL THE
- AUTHOR BE LIABLE FOR ANY DAMAGES WHATOVER (INCLUDING,
- WITHOUT LIMITATION, DAMAGES FOR LOSS OF BUSINESS PROFIT,
- BUSINESS INTERRUPTION, LOSS OF BUSINESS INFORMATION, OR OTHER
- PECUNIARY LOSS) ARISING OUT OF THE USE OF OR INABILITY TO USE
- THIS PRODUCT.
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