Warren Buffets Investment Tenets

First, like many successful formulas, Buffett's looks simple. But simple does not mean easy. To guide him in his decisions, Buffett uses 12 investing tenets, or key considerations, which are categorized in the areas of: business, management, financial measures and value (see detailed explanations below). Buffett's tenets may sound cliché and easy to understand, but they can be very difficult to execute. For example, one tenet asks if management is candid with shareholders. This is simple to ask and simple to understand, but it is not easy to answer. Conversely, there are interesting examples of the reverse: concepts that appear complex yet are easy to execute, such as economic value added (EVA). The full calculation of EVA is not easy to comprehend, and the explanation of EVA tends to be complex. But once you understand that EVA is a laundry list of adjustments - and once armed with the formula - it is fairly easy to calculate EVA for any company.

Second, the Buffett “way” can be viewed as a core, traditional style of investing that is open to adaptation. Even Hagstrom, who is a practicing Buffett disciple, or "Buffettologist," modified his own approach along the way to include technology stocks, a category Buffett conspicuously continues to avoid. One of the compelling aspects of Buffettology is its flexibility alongside its phenomenal success. If it were a religion, it would not be dogmatic but instead self-reflective and adaptive to the times. This is a good thing. Day traders may require rigid discipline and adherence to a formula (for example, as a means of controlling emotions), but it can be argued that successful investors ought to be willing to adapt their mental models to current environments. (It's not always bad to copy someone, especially when it's one of the greatest investors ever.

Business

Buffett adamantly restricts himself to his "circle of competence" - businesses he can understand and analyze. As Hagstrom writes, investment success is...