Economic Moats: Spotting Durable Competitive Advantages
Learn how to identify economic moats, the five main types with real examples, and how to test whether a company’s competitive advantage is actually durable.
Investing
Margin Calls Explained: Maintenance Margin Step by Step
A step-by-step walkthrough of maintenance margin and margin calls, with a worked example showing when a broker force-liquidates a position.
Guidance and Estimate Revisions: Why They Move Stocks
How company guidance and analyst estimate revisions move stock prices, why revisions momentum matters, and what traders and investors should watch.
Short Selling Mechanics: Borrow Fees, Recalls and Squeezes
How short selling works: stock borrowing, borrow fees, recall risk, and the mechanics of a short squeeze, explained for retail traders and investors.
Valuation Multiples Compared: EV/EBITDA, P/S and PEG
EV/EBITDA, P/S and PEG compared: when each multiple fits, where they mislead, and how traders and long-term investors should use them.
How Stock Indices Are Built: S&P 500, Nasdaq 100 and DAX
How the S&P 500, Nasdaq 100 and DAX pick and weight their members, why concentration risk matters, and what it means for traders and long-term investors.
ROE and ROIC: Measuring the Quality of a Business
ROE can be inflated by leverage while ROIC strips out the debt effect. Learn how to compare the two when judging business quality.
Large, Mid and Small Caps: How Market Cap Shapes Risk
How large, mid and small cap stocks differ in volatility, liquidity and index membership, with separate notes for traders and long-term investors.
Free Cash Flow: The Number Behind Real Value
Learn how to calculate free cash flow, why it differs from net income, and the warning signs that cash flow statements reveal about a company’s real value.
Settlement Explained: What T+1 Means for Your Trades
T+1 settlement explained for US and UK investors: when trades settle, when cash becomes free to withdraw, and how to avoid good-faith violations.