The shape of the universe
Across the eight sectors we track, 2,347 companies make up the current universe. Technology is the clear leader by headcount with 638 names — roughly 27% of everything we follow — anchored by the familiar heavyweights: Apple, Microsoft, NVIDIA, AMD, Salesforce and Intel. No other sector comes close in breadth.
Behind it sits a substantial middle tier. Industrials (447 companies) and Healthcare (387) together account for another third of the universe, and Basic Materials adds 334 more. The remaining four sectors — Consumer Cyclical (170), Energy (141), Financials (140) and Communication Services (90) — are narrower by count, even though several contain some of the largest businesses in the world.
A genuinely global tail
What stands out is how international the coverage runs once you look past the US mega-caps. The sample names are dotted with Shanghai (603992.SS), Hong Kong (9988.HK, 0700.HK), Taiwan (4588.TW), Korea (187660.KQ), India (RELIANCE.NS), Toronto (NVO.TO), Sydney (NVO.AX) and London (SHEL.L) listings. You also see the same business tracked across multiple venues — Tesla appears as TSLA, TL0.F and TL0.DE; Alphabet as both GOOGL and GOOG. That cross-listing matters for anyone reconciling positions: one company can show up under several tickers.
Breadth versus reported weight
Here the data gets interesting. Ranking by the reported total market capitalization produces a completely different order than ranking by company count. Technology, the broadest sector, carries a reported $22.7T — yet Financials ($159T), Energy ($107T) and Basic Materials ($47T) all print higher aggregate figures despite having a fraction of the names. Consumer Cyclical, home to Amazon and Tesla, shows the smallest reported total of all at roughly $577B.
That inversion is large enough that I would not take the headline capitalization numbers at face value without a second look. When a sector of 141 companies reports a higher aggregate than one of 638, the likeliest culprits are cross-listing double-counts or stale per-name figures rather than a true economic signal. Breadth (company counts) is the sturdier lens here; the aggregate caps deserve an audit before anyone builds a thesis on them.
What an investor might watch
Three things stand out. First, concentration risk: with more than a quarter of the universe in Technology and the mega-cap names doing the heavy lifting, broad exposure here is really a bet on a handful of businesses. Second, the materials and industrials tail — fertilizer, lithium, gold and shipping names like ZIM — offers genuine diversification away from that tech core. Third, data hygiene: before leaning on any sector-level aggregate, confirm that cross-listed duplicates (Tesla, Alphabet, the NVO pair) aren't inflating the totals. On a platform built to track holdings across many exchanges, clean deduplication is the difference between a real sector read and a mirage.