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Written by Thomas & Øyvind — NorwegianSpark · Last updated: April 2026
Learn about ETF investing, index funds, passive investing strategies, and portfolio construction.
This page is for educational purposes only and does not constitute financial advice.
An Exchange-Traded Fund (ETF) bundles dozens, hundreds, or even thousands of individual securities into a single tradeable unit. When you buy one share of a global stock ETF, you instantly own a tiny slice of companies across the entire world — from Apple and Microsoft to Nestlé and Toyota.
Index ETFs track a specific benchmark — like the S&P 500, MSCI World, or FTSE All-World — rather than relying on a fund manager to pick winners. This passive approach keeps costs extremely low (often 0.03–0.20% per year) and removes the human biases that plague active fund management.
The S&P 500 is the most-watched stock index in the world, representing roughly 80% of the US equity market by capitalisation. Historically it has delivered around 10% annualised returns before inflation — a remarkable track record over nearly a century of data.
However, concentrating entirely in US stocks leaves your portfolio exposed to a single economy. Global diversification — combining US, developed international, and emerging market ETFs — reduces country-specific risk while capturing growth wherever it occurs. Many investors use an all-world ETF as a one-fund solution for instant diversification across 40+ countries.
We are currently reviewing ETF brokers and index fund platforms to recommend on this page. Our comparison will cover expense ratios, platform fees, available indices, and tax-wrapper options.
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