Spreadsheet Tools

We have decommissioned the IOI Tools site and replaced them with two downloadable spreadsheets. The IOI Valuation Model allows you to model the main drivers of value as discussed in The Intelligent Option Investor. The BSM Cone Tool allows you to download stock price data for U.S.-listed companies and input implied volatility and valuation range data to create a BSM Cone.

IOI Valuation Model | BSM Cone Tool


Web Appendices

Web Appendix I works through an actual investment analysis. Web Appendix II delves into the topic of valuation ranges.

Appendix I | Appendix II



A few mistakes and typographical errors slipped through the writing and editing process. Many thanks to the sharp-eyed readers who pointed out these issues!