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Reinvestment Rate: Formula, Example and How to Read It
Learn what a company's reinvestment rate is, how to calculate it from financial statements, and how to pair it with ROIC to judge growth and value.
Rebalance Threshold Bands: How to Set Them and Use Them
Learn how rebalance threshold bands work, how to calculate a breach, how the 5/25 rule triggers, and how to fix drift using new cash before you sell.
Cost Basis Methods for Stocks: FIFO, Average Cost and More
Compare cost basis methods for stocks: FIFO, LIFO, specific identification and average cost. See a worked example and how to choose before you sell.
The Mr. Market Analogy: Graham's Lesson on Price vs. Value
Benjamin Graham's Mr. Market analogy explained with a worked example, a simple routine for using it, and the limits every investor should know.
Asset-Light Businesses: How They Work and How to Spot Them
What asset-light businesses are, how the model works, real examples, and the ratios investors use to tell a truly asset-light company from one that only looks it.
Working Capital Analysis: How Investors Read the Numbers
Learn how to do working capital analysis as an investor: the formula, what positive or negative figures signal, how to read trends, and the traps to avoid.
Gross Margin Expansion: What It Means and How to Judge It
Learn what gross margin expansion means, what drives it, and how to tell whether a rising margin is durable or a one-off before you buy the stock.
Loss Aversion in Investing: How to Spot It and Manage It
Loss aversion makes losses feel worse than equal gains feel good. See real examples, the research behind it, and practical rules to keep it from steering your portfolio.
Cash Runway Calculation: Formula, Examples and What It Tells Investors
Learn how to calculate cash runway step by step: the formula, gross vs. net burn, worked examples, and how investors read runway in a stock's filings.