The tracked universe spans 2,400 companies across eight sectors as of 20 October 2026. Two different lenses — how many names a sector holds versus how much market value it carries — tell two very different stories, and the gap between them is the most interesting feature in the data.
Breadth: Technology runs the board
By headcount, Technology is the heavyweight with 650 names, roughly 27% of the entire universe. The sample reads like a megacap roll call — Apple, Microsoft, NVIDIA — alongside the semiconductor supporting cast of AMD and Intel and the software bellwether Salesforce. Industrials follow at 456 companies, a sprawling and genuinely global set that runs from Honeywell and nVent to shipping line ZIM, eVTOL hopeful Archer Aviation, and listings in Shanghai and Taipei. Healthcare (396) and Basic Materials (343) round out the breadth leaders. At the thin end, Communication Services carries just 94 names despite including Alphabet, Meta, Netflix, Disney, and Tencent — a reminder that this sector is concentrated in a handful of giants rather than spread across many tickers.
Value: Financials and Energy dominate aggregate cap
Flip to aggregate market capitalisation and the ranking inverts. Financials tops the table at roughly $159.5T tracked, led by Berkshire Hathaway, JPMorgan, Visa, Mastercard, and Bank of America. Energy follows near $106.6T (Exxon, Shell, Reliance), and Basic Materials sits around $47.2T. Technology — the breadth champion — ranks fourth by value at about $23.1T. Most striking is Consumer Cyclical: despite housing Amazon and Tesla, its tracked cap is just ~$0.58T, the smallest of any sector and orders of magnitude below its marquee constituents' real heft.
What an investor should actually watch
The divergence is the signal. When a sector's value ranking contradicts both its company count and its member list — Financials and Energy carrying caps that dwarf Technology's — the aggregate figures deserve scrutiny before they drive any allocation decision.
Two data-hygiene issues stand out. First, cross-listings are being counted as distinct names: Tesla appears as both TL0.F and TL0.DE, Alphabet as GOOG and GOOGL, and Basic Materials and Energy carry duplicate pairs like NVO.TO/NVO.AX, GAL.V/GAL.L, and OBE/OBE.TO. That inflates headcounts and likely double-counts value. Second, the market-cap column itself looks noisy — the tiny Consumer Cyclical total against its membership, and the outsized Financials and Energy figures, are hard to reconcile with the sample constituents.
Takeaway
Use breadth for coverage and value for weight — but treat this universe's aggregate caps as a hypothesis, not a fact, until cross-listings are deduplicated and the outlier totals are reconciled. The composition story is real: Technology leads on names, Communication Services is a concentrated oligopoly, and Industrials is the most internationally diverse bucket. The valuation story needs a clean-up pass first.