The shape of the universe
As of 28 July 2026, the tracked universe spans 1,775 companies across eight sectors, and the distribution is decidedly lopsided. Technology alone accounts for 515 names — about 29% of the entire board — followed by Industrials (354, ~20%) and Healthcare (302, ~17%). Those three sectors together hold more than 1,170 companies, roughly two-thirds of everything we follow. The thinner end of the tail is Communication Services (73), Energy (100), and Financials (102).
Technology sets the tone
It is no surprise that Technology leads by headcount. The sample names read like a roll call of the megacap era — Apple, Microsoft, NVIDIA — alongside the picks-and-shovels layer of the AI trade, AMD and Intel, and enterprise software in Salesforce. The sector's breadth means it is doing a lot of the index's heavy lifting; when investors talk about "the market," they are disproportionately talking about names concentrated here.
The long tail is genuinely global
Dig past the top three and the international character of the list becomes obvious. Industrials mixes Honeywell and Archer Aviation with Xiamen Solex and Taiwan's Arch Meter; Basic Materials pulls in China XLX Fert and a cluster of junior gold and lithium miners; Energy ranges from Exxon and Shell to Reliance Industries and Antero Resources. This is not a U.S.-only universe, and the sector buckets flatten a lot of geographic and regulatory diversity.
A note on the market-cap figures
The reported aggregate market caps should be read with real caution. Financials shows a headline figure orders of magnitude above Technology's, despite holding a fifth as many companies — a pattern that does not survive a sanity check. Part of the explanation is visible right in the sample names: the universe is riddled with cross-listings. Novo Resources appears as both NVO.TO and NVO.AX, Galantas Gold as GAL.V and GAL.L, Obsidian Energy as OBE and OBE.TO, Tesla as TL0.F and TL0.DE, and Alphabet as both GOOG and GOOGL. Duplicated tickers inflate counts and, where caps are summed naively, the totals too. Treat the aggregate market-cap column as directional at best.
What an investor might watch
Three things stand out. First, concentration risk: with Technology at ~29% of names, sector-level moves in software and semiconductors will dominate broad exposure whether or not you intend it. Second, breadth versus weight: Financials, Energy, and Communication Services are thin by count but anchored by heavyweight names — Berkshire, Visa, Exxon, Alphabet, Meta — so headcount understates their importance. Third, data hygiene: before drawing conclusions from any sector aggregate, dedupe the cross-listings. The composition story here is clear; the valuation story needs cleaner inputs before it can be trusted.