Building a portfolio

Position Sizing: How Much to Put Into One InvestmentPosition sizing decides what a mistake costs. See why a 90% fall in one holding costs 1.8% or 45% of a portfolio, and how investors set limits. 5 min → Margin Call: How Leverage Turns a Market Fall Into a Forced SaleWith $50,000 of your own money and $50,000 borrowed, a 33% fall triggers a margin call and a 50% fall wipes you out. How leverage creates forced sellers. 5 min → Risk Tolerance: How to Choose a Risk Level You Can Actually HoldFind your risk tolerance with three questions, the halve-it test and what 100% stocks, 60/40 and a gold mix lost at their worst since 2004. 5 min → What Is an ETF? Low-Cost Building Blocks for Your PortfolioWhat is an ETF? How index ETFs work, why costs compound (0.1% vs 2% over 30 years), five things to check, and the building-block approach. 5 min → Core Satellite Portfolio: A Safe Home for Your Own Investment IdeasHow a core satellite portfolio works: an 80–90% systematic core, a 10–20% satellite for your ideas, and what a failed idea costs on $100,000. 5 min → Multi Asset Portfolio: Why Hold Several Asset Classes at OnceA five-asset mix had a worst fall of 20.9% vs 54.6% for stocks (2007–2026, hypothetical). Why a multi asset portfolio cuts risk, and what it costs. 5 min → Risk Parity: Why Equal Dollars Are Not Equal RiskIn a 60/40 portfolio, stocks carried 86% of the risk (2007–2026). See how risk parity weights spread risk more evenly across asset classes. 5 min → Volatility targeting: sizing investments by risk, not by dollarsWhy $1 in Bitcoin carries about 4x the risk of $1 in the S&P 500, how equal-risk weights split $100, and how volatility targeting adjusts size. 5 min → Investment Fees: The Four Layers of Cost and What 1% Really CostsInvestment fees come in four layers. On $100,000 over 30 years at 7%, the gap between 0.1% and 1% in costs is about $166,000. How to add up your own. 5 min → Investment Plan: How to Write Yours on a Single PageHow to write an investment plan on one page: goals, risk level, allocation, rules, routine, and crisis notes for −10%, −20% and −30% falls. 5 min → Portfolio Review: A One-Hour Monthly Routine in Four StepsA portfolio review takes about one hour a month: check signals, compare weights to targets, act only where the plan says so, then log it. Here's how. 5 min → Investing Every Month: What 26 Years of Regular Saving Shows$500 a month into the S&P 500 from 2000 grew to about $930,000 in a hypothetical backtest. See why the crash years did the most work. 5 min → Behavioral Biases in Investing: The Four That Cost the MostLoss aversion, recency, FOMO and overconfidence push investors to buy high and sell low. How each bias works and the habits that help contain it. 5 min → How to Analyze a Company: Five Numbers in Ten MinutesGrowth, margins, cash flow, debt and valuation: a ten-minute method to read any business, with red flags and a two-company example. 5 min → Value vs Growth Stocks: What Five Themes Reveal About Deep FallsValue vs growth stocks through five sector themes: semiconductors fell 85.9%, uranium 93.5%. How theme cycles work and how investors size them. 5 min →