Technology sets the pace
The shape of our tracked universe is lopsided, and deliberately so. Of the eight sectors we follow, Technology is the largest by a distance: 652 companies, roughly 27% of the ~2,400 names on the board. The marquee tickers are exactly who you'd expect — AAPL, MSFT and NVDA anchor the megacaps, with AMD, CRM and INTC rounding out the semiconductor-and-software core. If you want a single read on where investor and index attention concentrates, the headcount gives it to you plainly.
The industrial and materials tail is deeper than it looks
Behind Technology sit three sectors that are easy to underrate. Industrials (463), Healthcare (398) and Basic Materials (347) together hold more names than Technology on their own. These are also the most globally dispersed slices of the board: Industrials spans Honeywell (HON) and Archer Aviation (ACHR) alongside Shanghai- and Taipei-listed names like 603992.SS and 4588.TW, while Basic Materials leans heavily toward miners and fertiliser producers (CHINA XLX FERT, Galantas Gold, Argentina Lithium). Breadth here means the sector averages are driven by a long tail of small, non-US issuers, not by a handful of giants.
The smaller cohorts are the household-name sectors: Consumer Cyclical (178) with Amazon, Tesla and Home Depot; Financials (146) led by Berkshire, JPMorgan, Visa and Mastercard; Energy (143); and the most concentrated of all, Communication Services (95), where Alphabet, Meta, Netflix and Tencent do most of the heavy lifting.
A caveat on the market-cap column
Here I'll be opinionated: trust the counts, not the aggregate market caps. The totals in the data invert the ranking you'd expect — Financials and Energy report larger aggregate caps than Technology, and Consumer Cyclical (which includes Amazon and Tesla) reports the smallest of all. Those figures don't reconcile with the names listed, and the sample data hints at why. Several sectors carry obvious cross-listing duplicates: Novo Resources appears as both NVO.TO and NVO.AX, Tesla as TL0.F and TL0.DE, Alphabet as GOOG and GOOGL, Galantas as GAL.V and GAL.L. Double-counted lines and mismatched reporting units are exactly the kind of thing that distorts a summed market-cap column. Until that's reconciled, the aggregate caps are best treated as unreliable.
What an investor might watch
Three things stand out. First, concentration risk inside Technology — a 652-name sector still rises and falls with a few megacaps, so breadth on the board is not breadth in returns. Second, the international, small-cap tilt in Industrials and Basic Materials, which is where idiosyncratic and FX-driven moves tend to hide. Third, and most immediately actionable for us, data hygiene: the cross-listing duplicates visible in the samples should be deduplicated before any sector-weighting or screening logic leans on these totals. A cleaner universe is the prerequisite for every sector call that follows.