power4XL Microsoft Excel Resource Center
Free Macros, Formulas, Functions, Tutorials, Downloads, Add-Ins & More!


What users have said about power4XL

June 23, 2006

Thank you!

I have been investing in options for about 4 years, and Ive created some pretty elaborate spreadsheets for evaluating my strategy, including my own crude implementation of Black-Scholes.  However, my entire investment strategy depends on both historic volatility and implied volatility, and Ive never had an easy way to model/measure these in a spreadsheet.

(I worked for Microsoft for 8 years and I quit in 2005 because I was making more money trading options than I was making in salary.  I felt like I was losing money by spending time at work J  Im an audio/video guy, not a software developer my coding skills are very basic.)

I am very impressed with the macros youve provided they are easy to use, complete, accurate, well documented, and as far as Ive been able to tell very robust (i.e., bug free with appropriate error trapping).

Your macros are just the tools I need to help me tackle this project! 

David Workman

September 2, 2006


Outstanding, just outstanding.

All the Best.

J. B. Hughes

September 2, 2006

I would like to thank you very much for working with me during the installation of your Power4XL.

This Macro will definitely help me with my options trading. The Power4XL Macros are exactly what I needed.

Thanks Again,
Greg Gould


Copyright notice:  This site and all content, including computer code and spreadsheet examples, are copyright 2006 by Fritz Dooley.  License is granted for individual users to download examples and to copy code directly into user's spreadsheets and Visual Basic for Applications files.  Users may not redistribute code in any way.  Providing hyperlinks to this web site is encouraged, but posting code and examples on other web sites is expressly forbidden.  "Microsoft" is a registered trademark of Microsoft Corporation.   Neither this web site nor Fritz Dooley is affiliated with Microsoft Corporation.