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Worked case studies

Understanding financial statements in the abstract is useful, but understanding them in context is essential. This chapter examines the actual financial statements of real companies, both well-run businesses and notorious frauds. By comparing the statements across these cases, you will see how different business models, different industries, and different management teams produce different financial patterns.

The cases in this chapter cover three categories. First are successful, mature public companies that exemplify strong financial management and transparent reporting: Apple, Costco, and Visa. These are companies with clear business models, strong margins, growing profits, and honest disclosure. Reading their statements teaches you what a well-run company looks like.

Second are companies in distress or with deteriorating fundamentals: Netflix during its streaming-transition period, or companies facing secular headwinds. These cases teach you how to spot trouble before it becomes obvious to the market.

Third are famous frauds and accounting scandals: Enron, Wirecard, and Theranos. These cases teach you what deception looks like and what red flags to watch for. Many of the patterns in these frauds are visible in the financial statements years before the fraud became public.

Apple: ecosystem moat and margin power​

Apple's financial statements over the past decade show a business that has built an ecosystem moat—customers who buy iPhones also buy Apple Watches, AirPods, and other products that are designed to work seamlessly with the iPhone. This ecosystem creates pricing power and high margins.

The income statement reveals gross margins in the 40-46 percent range, substantially higher than most manufacturing businesses. This high margin is possible because Apple sells branded, differentiated products rather than commodity hardware. The balance sheet shows minimal inventory (products move quickly) and a large cash balance (Apple conserves cash rather than returning all profit to shareholders). The cash flow statement shows massive operating cash flow and minimal capital expenditure requirements (Apple outsources manufacturing).

Reading Apple's statements teaches you how a premium brand builder creates value. The statements also show you how Apple manages and discloses its complexity: the company serves consumers (iPhones, Macs), professionals (iPad Pro, MacBook Pro), and enterprises. The segment reporting is transparent about which segments are growing, the customer base is global, and the business model is capital-light.

Costco: working capital leverage and scale​

Costco's financial statements show a very different business model: a retailer that offers value through scale and efficiency. The gross margin is thin—usually in the 10-12 percent range. But the company generates enormous operating cash flow because of its working capital advantage.

Costco collects membership fees in advance, so customers pay before the company has bought inventory. Costco then pays suppliers slowly, negotiating longer payment terms. This timing advantage—getting paid before you pay suppliers—creates a positive working capital cycle and massive operating cash flow.

Reading Costco's statements teaches you that profit margin is not the only source of value creation. A business with thin margins but superior working capital management can generate more cash and be worth more than a high-margin business with poor working capital management. Costco's financial statements show why investors should pay attention to working capital turnover and payment terms, not just gross margin.

Visa: network economics and capital light​

Visa is a payment processor that does not own physical card networks or payment infrastructure in the way a bank does. The financial statements show capital-light economics: operating cash flow is high, capital expenditure is minimal, and most of the profit flows directly to the bottom line.

The business model is a network: the more merchants and cardholders using the network, the more transactions flow through, the more Visa earns. This network effect creates a moat. Competitors cannot easily displace Visa because consumers and merchants want to use the network where everyone else already is.

Reading Visa's statements teaches you to recognize network economics. The statements show high margins, low capital intensity, predictable recurring revenue from established customers, and organic growth driven by penetration of existing networks. Companies with these characteristics (Apple, Visa, many software companies) tend to be very profitable over time.

Deterioration: Netflix and the streaming wars​

Netflix's financial statements from 2015 versus 2022 show a business in transition. In 2015, Netflix had positive operating cash flow and was profitable. But the business was in the early stages of disrupting cable television. Capital expenditure on content was rising, the subscriber base was growing, and profit margins were compressed.

By 2022, Netflix had essentially won the streaming wars, but profitability was under pressure from rising content costs and saturation in developed markets. The financial statements show how growth slows as markets mature, and how capital intensity can increase if the business model requires more investment to grow.

Reading Netflix's statements over time teaches you how to anticipate business transitions. Growing companies often have lower margins and higher capital intensity because they are reinvesting aggressively in growth. Mature companies should have higher margins and lower capital intensity. When this pattern reverses—a company that was becoming more profitable instead becomes less profitable—it signals trouble.

Fraud: Enron's hollow shell​

Enron's financial statements from 2000 (the year before it collapsed) show a company that looked profitable on the income statement but which was hiding massive losses in off-balance-sheet partnerships. The balance sheet showed substantial assets, but many of these were investments in special-purpose entities that existed only to conceal debt. The cash flow statement showed operating cash flow, but much of this cash came from financing activities and asset sales, not from profitable operations.

Reading Enron's statements teaches you that a clean income statement does not guarantee a healthy company. Enron's reported profits were real in the sense that they were booked according to accounting rules, but they were not real in the sense that they did not come from genuine business operations. The statements also show how operating cash flow can be inflated through financing activities and asset sales.

Fraud: Wirecard's fictional revenue​

Wirecard was a payment processor that claimed to have enormous operations in Asia and Africa, with revenues growing at triple-digit rates. The financial statements showed revenue growth and profitability. But the revenue was largely fictional—recorded from customers and transactions that did not exist.

The red flags in Wirecard's statements were visible to anyone who looked carefully. Operating cash flow did not match profits. Receivables were growing faster than revenue. The company's auditors (Ernst & Young) gave clean opinions despite these red flags. The company's disclosures were vague about the nature of its business and the breakdown of revenue by customer.

Reading Wirecard's statements teaches you how to spot revenue red flags. When receivables grow much faster than revenue, when operating cash flow lags profits, when a company is vague about its revenue breakdown, these are warning signs of potential problems.

What these cases teach​

The case studies in this chapter are drawn from publicly available financial statements. By comparing successful companies to struggling companies to fraudulent companies, you see what healthy financial statements look like, what distress looks like, and what deception looks like.

The key insight across all these cases is consistency. A healthy company's financial statements tell a coherent story: the income statement, balance sheet, and cash flow statement are all internally consistent and aligned with the business description. A distressed or fraudulent company shows inconsistencies: the income statement shows profit but the cash flow statement does not, the balance sheet shows assets that are difficult to understand, the business description does not align with the actual financial metrics.

Reading these case studies and comparing them to companies you are considering investing in will teach you to spot these inconsistencies and red flags in the companies you analyze.

Articles in this chapter​