Contrary to popular belief, earnings growth has a very low correlation with decadal stock returns. The primary driver is the change in the valuation multiple (e.g., P/E ratio expansion or contraction). The correlation between 10-year real returns and 10-year valuation changes is a staggering 0.9, while it is tiny for earnings growth.

The case of Netflix in 2016, with a P/E over 300, shows that high multiples can reflect a company strategically sacrificing short-term profits for global expansion. Instead of dismissing such stocks as expensive, investors should use second-order thinking to ask *why* the market is pricing in such high growth.

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.

Counterintuitively, data shows that companies in higher market cap bands (e.g., $10B to $100B) have a statistically better chance of achieving a 10x return than those in lower bands. This supports the strategy of doubling down on winners, as the 'next double' is often easier for established platform companies.

A specific arbitrage opportunity exists with serial acquirers. When they announce a deal that will significantly increase future earnings per share, the market often under-reacts. An investor can buy shares at a compressed forward multiple before the full impact of the acquisition is priced in.

Acquiring smaller companies at a 5-6x EBITDA multiple and integrating them to reach a larger scale allows you to sell the combined entity at a 10-12x multiple. This multiple expansion is a powerful, often overlooked financial driver of M&A strategies, creating value almost overnight.

Investment gains often come from "multiple expansion," where the market's perception of a business improves, causing it to trade at a higher valuation. This sentiment shift is frequently more impactful than pure earnings growth, and underestimating it is a primary reason for selling winning stocks too early.

A powerful investment pattern is the "Good Co./Bad Co." combination. The market often nets out a profitable division and a losing one, undervaluing the whole. When the losing division is shut down or spun off, earnings can double overnight, forcing a dramatic stock re-rating.

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.