The Magnificent 7 and market concentration

Educational content. No name is a recommendation. Past performance does not guarantee future results.

The race of the giants

Apple, Microsoft, Alphabet, Amazon, Nvidia, Meta, Tesla: the "Magnificent 7". The market-cap race of these seven names tells one of the most important — and least understood — stories for investors today: concentration.

(Dedicated video coming soon.) In the meantime, watch the full series:

Why it matters, even if you don't own those stocks

Most "passive" investors think they're buying the market with an index ETF. But when 7 stocks grow to a huge share of the index, "the market" effectively becomes a concentrated bet on 7 companies in the same sector. That isn't wrong per se — but it's worth knowing what you own:

• Apparent diversification (hundreds of stocks) can hide very high effective concentration at the top.
• The index's return in recent years was largely driven by those few names: it's concentrated beta, not a broad balanced exposure.
• When leadership reverses, the same concentration that pushed it up amplifies the way down.

The link to alpha, beta and risk

Buying the index today largely means buying the performance of those 7 stocks — i.e. beta to a narrow cluster. Understanding how much of your "market" is concentrated is the first step to decide whether that's enough. More in Alpha and Beta and in how to measure an investment.

Methodology

Market capitalization over time (market data source), reshuffling bar race. Period declared in the video; no projections.

Educational content, not a recommendation. Past performance does not guarantee future results.