65-Day Academy · Day 45 · Building a Portfolio
Single Stocks vs the Index — an Honest Comparison
What single stocks offer
Upside the index cannot: concentrated wins (a 10-bagger moves a stock portfolio; it moves an index fund 0.5%), engagement with businesses you understand, and the ability to AVOID what you know is bad. What they cost: single-company catastrophe risk (individual stocks can go to zero; the index cannot), the work (day 15–21's analysis, forever), and behavioral exposure (your biases act on every name).
The honest hybrid
The evidence-backed core-satellite structure: a core index position (most of the capital, market return, zero effort) plus a satellite of individual positions (capital you can afford to be wrong about, where your analysis is genuinely better than the market's). The core caps the damage of your worst satellite decision; the satellites keep you learning. What kills accounts is the reverse: 90% single stocks and "I'll add an ETF later."
What you'll practise
True or false: an individual stock can lose 100% of its value; a broad-market index ETF effectively cannot.
10 XP in the app · introductory
Sources
- Common Sense InvestingJohn Bogle
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All lessons are for educational purposes only and are not individualized financial advice, a recommendation, or a solicitation to buy or sell any security. Options involve substantial risk and are not suitable for every investor.