The cash conversion cycle is one of those metrics that separates people who understand business from people who just watch stock prices.

It measures the time between when you pay for inventory and when you collect cash from customers. Shorter is better. Negative is magic.

Amazon and Costco collect money from customers before they pay suppliers. That's not just efficiency—it's a structural advantage that compounds over decades.

Most investors obsess over earnings. Smart ones watch cash flow. The wisest watch how long cash is trapped in the business cycle.

Time is the hidden cost nobody prices correctly.