Warren Buffett's Master Investment Checklist

This article was put together following requests from our patrons, who wanted a clear and practical guide inspired by Warren Buffett’s investment philosophy.

Over a career spanning more than 65 years, Buffett has shared an extraordinary amount of wisdom about how to evaluate businesses and make sound investment decisions. We have attempted to gather the most essential parts of that wisdom and present it in a format that’s easy to use and revisit whenever needed.

At the heart of this guide is a comprehensive checklist designed to help investors assess the quality of a business, its financial strength, and whether the stock offers a reasonable margin of safety. In addition to general principles, we’ve included tailored checklists for specific industries Buffett has often invested in, such as insurance, banking, utilities, FMCG, and technology, as each of these sectors has its own nuances.

The guide also highlights warning signs to watch for. Some situations are red flags, which should be avoided entirely. Others are yellow flags, i.e. situations where investors may proceed, but with extreme caution and keep their exposure limited. These distinctions are important for avoiding costly mistakes.

Finally, we outline Buffett’s approach to portfolio construction, including principles that can help individual investors build their own “million-dollar portfolio” over time. While Buffett’s scale and resources are unmatched, the core ideas behind his strategy are surprisingly accessible and adaptable for smaller investors.

We hope this checklist becomes a valuable tool for anyone looking to apply Buffett’s time-tested approach to their own investing journey.