Over the long run, the primary driver of a stock's market value appreciation is the growth in its underlying intrinsic value, specifically its earnings per share (EPS). This simple but profound concept grounds investing in business fundamentals, treating stocks as ownership stakes rather than speculative tickers.

Earning a high return on invested capital is only half the battle. True compounding requires the ability to redeploy large amounts of capital at similarly high rates. Amphenol achieves this through its disciplined M&A playbook in a fragmented market, answering the crucial question of reinvestment.

Industrial gases are essential for manufacturing, making failure catastrophic for customers. However, they only represent 1-2% of a customer's total costs. This combination of high failure cost and low relative spend creates an extremely sticky customer base with very low price sensitivity.

Contrary to the belief that a low P-E ratio is always better, a high ratio can signify a 'growth stock.' This indicates investors are willing to pay more because the company is reinvesting its earnings into future growth, betting on higher profitability over time.

High margins create stability but also invite competition. The ideal strategy is to operate with margins low enough to build customer loyalty and a competitive moat, while retaining the *ability* to raise prices when necessary. This balances long-term growth with short-term financial resilience.

During a market crash, Henry Singleton stopped acquiring companies and did the opposite: he used cash to buy back 90% of Teledyne's stock. While Wall Street saw this as failure, it was a rational trade—repurchasing his own company's earnings at a low multiple—which caused earnings per share to explode.

Instead of setting prices at launch and letting them erode, Novonesis implemented a discipline of having annual conversations about the value their products deliver. This shifted pricing from a 1-2% annual erosion to a 1-2% revenue growth contributor.

Financial models struggle to project sustained high growth rates (>30% YoY). Analysts naturally revert to the mean, causing them to undervalue companies that defy this and maintain high growth for years, creating an opportunity for investors who spot this persistence.

The 2018 merger of Linde and Praxair succeeded by combining Linde's world-class German engineering with Praxair's American focus on cost discipline and operational efficiency. This cultural blend created a more shareholder-friendly industrial powerhouse that expanded margins and free cash flow.