How Warren Buffett Picks Stocks: A Deep Dive Into His Framework

Over six decades of investing, Warren Buffett has compounded capital at approximately 20% annually — roughly double the S&P 500's long-term return. While many attribute this to genius or luck, a close reading of his annual letters and public statements reveals a remarkably consistent and learnable framework.

At its core, Buffett's approach can be distilled into four questions: Does the business have a durable competitive advantage? Is management honest and competent? Is the business simple enough to understand? And is the price attractive relative to intrinsic value?

The Moat Concept

Buffett's concept of an "economic moat" — a sustainable competitive advantage that protects a business from competitors — is perhaps his most influential contribution to investment thinking. He identifies four primary sources of moats: cost advantages, switching costs, network effects, and intangible assets like brands and patents.

The practical application for retail investors is straightforward: before buying any stock, ask whether a well-funded competitor could easily replicate what the business does. If the answer is no, you may have found a business worth studying further.