Investing Case Studies | Real-World Examples & Lessons

Costco Wholesale storefront with shopping, quality, people, and price icons on the left

Costco: A Case Study in Competitive Advantage

Introduction Why has Costco consistently outperformed many retailers for decades? The answer isn’t simply low prices or warehouse stores. Costco has built a business model that combines customer loyalty, operational efficiency, disciplined management, and a powerful competitive advantage. For fundamental investors, Costco offers an excellent case study of how a well-designed business can create long-term […]

Costco: A Case Study in Competitive Advantage Read More »

Evaluating an IPO with icons for understand, analyze, assess, and determine, alongside a rocket launch and rising chart

How to Evaluate an IPO Using Fundamental Investing Principles: Lessons from the SpaceX IPO

Case Studies

IPO Investing Is Exciting—And Dangerous Initial Public Offerings (IPOs) generate enormous excitement. Investors are drawn to innovative companies, compelling stories, and the possibility of owning the next great business before it becomes a household name. The upcoming SpaceX IPO has generated exactly this kind of enthusiasm, with the company expected to become one of the

How to Evaluate an IPO Using Fundamental Investing Principles: Lessons from the SpaceX IPO Read More »

Case Study: Dexter Shoes — Warren Buffett’s Worst Investment

Case Studies

Even the best investors make mistakes. Warren Buffett has called his investment in Dexter Shoes: “The worst deal I’ve ever made.” At first, Dexter looked like a great business. But over time, it became completely worthless. In this case study, you’ll learn: The Investment: What Happened? In 1993, Berkshire Hathaway acquired Dexter Shoes. At the

Case Study: Dexter Shoes — Warren Buffett’s Worst Investment Read More »

Case Study: Apple — A Great Investment Explained Using Buffett’s Framework

Case Studies

What does a great investment actually look like in the real world? Apple is one of the best modern examples. In 2011, many investors were uncertain about Apple’s future. But those using fundamental investing principles saw something different: A high-quality business trading at an attractive price. In this case study, you’ll learn: The Situation in

Case Study: Apple — A Great Investment Explained Using Buffett’s Framework Read More »

Clean, modern infographic of Warren Buffett evaluating companies, featuring his portrait beside a stack of investing books, with blue and teal tones, minimalist financial chart background, and key principles like understanding the business, competitive advantage, financial strength, and long-term thinking in a Sans-Serif design

How Warren Buffett Evaluates Companies: A Simple Investing Framework

Case Studies

Warren Buffett is one of the most successful investors of all time. But his approach is surprisingly simple. He doesn’t chase trends.He doesn’t try to predict the market. Instead, he focuses on understanding businesses. At the Fundamental Investing Institute, we teach a similar approach—evaluating companies based on fundamentals, not speculation. In this guide, you’ll learn:

How Warren Buffett Evaluates Companies: A Simple Investing Framework Read More »

Warren Buffett partnership years graphic

Reflection on Warren Buffett’s Career: The Partnership Years

Case Studies

This post is part of an ongoing series reflecting on Warren Buffett’s career and investment philosophy. Buffett on Scale and Structural Advantage In 1999, at the height of the dotcom bubble, Warren Buffett gave an interview for BusinessWeek. Buffett was discussing how the combination of an over-heated stock market and Berkshire Hathaway’s large size made

Reflection on Warren Buffett’s Career: The Partnership Years Read More »

Desk with notebook and pen representing Warren Buffett’s early education and formative years studying business and investing fundamentals

Reflections on Warren Buffett’s Career: Early Influences

Case Studies

Early Life and Family Influences In the first post in this series, I wrote a bit about how I encountered Warren Buffett’s investment philosophy as an undergraduate student (read it here). In this post, I discuss Warren Buffett’s early years and some of the influences that shaped his early career. Warren Buffett was born on

Reflections on Warren Buffett’s Career: Early Influences Read More »

Bookcases filled with books in a library. Signifying Warren Buffett early learning.

Reflections on Warren Buffett’s Career

Case Studies

Part One: Early Influences, Long-Term Discipline, and Learning to Think About Business Why Reflect on Warren Buffett Now On January 1st, 2026, Warren Buffett officially stepped down as the CEO of Berkshire Hathaway, Inc., the sprawling conglomerate and investment holding company that Buffett, alongside his late partner Charlie Munger, built up over five decades. As

Reflections on Warren Buffett’s Career Read More »

Woman and Man small business owners in front of their store with an open sign.

Small Business Acquisition – The Management Factor

Case Studies

In a previous blog post, The Risks of Financial Leverage in Small Business Acquisitions, I discussed the increased number of online influencers. They are promoting small business acquisitions as a path to creating wealth. While there are plenty of entrepreneurs who have become very wealthy acquiring small businesses, these deals are not without risk. Influencers

Small Business Acquisition – The Management Factor Read More »

mans hand holding a pen with a clipboard of papers with financial information

The Risks of Financial Leverage in Small Business Acquisitions

Case Studies

Why Small Business Acquisitions Look So Attractive Many business influencer’s have been touting the benefits of acquiring a small business and installing an operator. As someone who has invested in a handful of small businesses and has consulted for many more, I thought it would be remiss of me not to highlight some of the

The Risks of Financial Leverage in Small Business Acquisitions Read More »

Real-World Examples

Business Analysis

Fundamentals-First

Costco: A Case Study in Competitive Advantage

How to Evaluate an IPO Using Fundamental Investing Principles: Lessons from the SpaceX IPO

Case Study: Dexter Shoes — Warren Buffett’s Worst Investment

Case Study: Apple — A Great Investment Explained Using Buffett’s Framework

How Warren Buffett Evaluates Companies: A Simple Investing Framework

Reflection on Warren Buffett’s Career: The Partnership Years

Reflections on Warren Buffett’s Career: Early Influences

Reflections on Warren Buffett’s Career

Small Business Acquisition – The Management Factor

The Risks of Financial Leverage in Small Business Acquisitions

New to Stock Investing?Start Here.

Real-World Examples

Business Analysis

Fundamentals-First

Filter posts by category

Case Studies

New to Stock Investing?
Start Here.