The shape of the universe
Across the eight sectors we track, there are 2,161 companies in the snapshot dated 30 August 2026. The distribution is lopsided by design and by market reality: Technology alone holds 591 names — roughly 27% of everything we cover. Add Industrials (416) and Healthcare (361) and three sectors account for well over half the tracked universe. The long tail thins quickly: Communication Services is the smallest at just 85 companies.
Breadth versus weight
Here is where it gets interesting. Company count and reported market cap point in opposite directions, and the divergence is the real story.
| Sector | Companies | Reported cap (M) |
|---|---|---|
| Technology | 591 | 22,651,463 |
| Industrials | 416 | 12,334,209 |
| Healthcare | 361 | 3,626,700 |
| Basic Materials | 294 | 47,106,566 |
| Consumer Cyclical | 159 | 575,288 |
| Financials | 128 | 159,437,176 |
| Energy | 127 | 106,540,756 |
| Communication Services | 85 | 5,284,851 |
Technology has the most names but nowhere near the largest reported cap. Financials, with only 128 companies, shows the largest market-cap figure by a wide margin, followed by Energy and Basic Materials. Consumer Cyclical, despite housing Amazon, Tesla, and Alibaba, reports the smallest cap of any sector.
A caveat worth stating plainly
Those cap figures should be read sceptically. Consumer Cyclical anchored by Amazon and Tesla cannot realistically be the lightest sector in the book, and a 128-name Financials sector dwarfing a 591-name Technology sector strains credulity. The sample names hint at the cause: the universe is littered with cross-listings — Tesla as both TL0.F and TL0.DE, Novo Resources as NVO.TO and NVO.AX, Galantas Gold as GAL.V and GAL.L, Obsidian Energy as OBE and OBE.TO, Alphabet as both GOOGL and GOOG. Duplicate listings and uneven cap coverage almost certainly distort the aggregates. Treat the company counts as the more trustworthy signal; treat the cap totals as directional at best.
The recognisable core
Underneath the noise sits a familiar backbone. Technology leans on Apple, Microsoft, NVIDIA, and AMD; Communication Services is essentially Alphabet, Meta, Netflix, and Tencent; Financials centres on Berkshire, JPMorgan, Visa, and Mastercard. These mega-caps are what most portfolios actually touch, regardless of how the sector totals shake out.
What an investor might watch
Three things. First, concentration: with Technology this dominant by count, breadth in the tracked universe is really a bet on tech breadth. Second, the international tail — Chinese, Taiwanese, Korean, and Canadian tickers appear throughout, so sector exposure is global, not US-only. Third, data hygiene: before drawing weighting conclusions from cap figures, de-duplicate the cross-listings. The headcount is honest; the dollar totals need a second look.