The Universe at a Glance
As of 11 June 2026, the Headmars discovery engine tracks 863 companies across eight sectors, spanning exchanges from NASDAQ and NYSE to Hong Kong, Shanghai, London, Frankfurt, and the TSX Venture. Combined, those companies carry roughly $31.9 trillion in market capitalisation — a number that, on its own, tells only part of the story.
Technology: The Undisputed Core
With 277 companies and ~$17.3 trillion in combined market cap, Technology represents roughly 54 % of the entire tracked universe by value. Apple, Microsoft, NVIDIA, AMD, Salesforce, and Intel anchor the sector, and the sheer weight of the mega-caps means a single-day move in any of the top three can shift the portfolio dashboard more than an entire month of activity in smaller sectors.
For investors building here, concentration risk is the primary watch item. The gap between the top handful and the rest of the sector is enormous — NVDA's recent AI-driven run illustrates how quickly that concentration can widen.
Communication Services: Small Roster, Enormous Footprint
At only 34 companies, Communication Services is one of the least-populated sectors — yet it ranks second by market cap at ~$5.2 trillion, implying an average company value above $150 billion. Alphabet (listed twice as GOOGL and GOOG), Meta, Netflix, Disney, and Tencent are the names doing the heavy lifting.
This asymmetry is worth watching closely. A sector this top-heavy reacts sharply to regulatory news (EU digital-markets enforcement, US antitrust) and to advertising-cycle data, since the dominant names are overwhelmingly ad-revenue or subscription businesses.
Healthcare and Industrials: The Broad Middle
Healthcare (185 companies, ~$3.3 T) and Industrials (150 companies, ~$3.0 T) form a comparable mid-tier. Healthcare spans large-cap incumbents like Johnson & Johnson, UnitedHealth, and AbbVie alongside international names such as Shanghai Xiao Fang Pharmaceutical and Korean biotech PenetriumBio — a sign that the tracker deliberately includes emerging-market and small-cap exposure.
Industrials is similarly global, mixing blue-chips like Honeywell with speculative-growth names such as Archer Aviation and Chinese equipment manufacturers. The sector's breadth makes it a reasonable macro barometer: shipping (ZIM), electrical infrastructure (nVent), and next-generation aviation all share the same grouping.
Energy and Financials: Solid but Selective
Energy (51 companies, ~$1.8 T) and Financials (53 companies, ~$625 B) are similarly sized by company count but diverge sharply on total value. Energy's figure is inflated by integrated supermajors — Exxon, Shell, and Reliance Industries — sitting alongside much smaller producers like Obsidian Energy (tracked on both NYSE and TSX, a reminder that cross-listing duplicates exist in the dataset).
Financials is anchored by Berkshire Hathaway, JPMorgan, and the card networks Visa and Mastercard, but the $625 B total reflects a deliberately narrow selection rather than the full depth of global banking.
Consumer Cyclical and Basic Materials: The Tail
Consumer Cyclical (75 companies, ~$465 B) is disproportionately shaped by Amazon and Tesla, both mega-caps assigned to this sector rather than Technology. Strip those two out and the remaining names — Home Depot, Alibaba — still represent significant consumer-spending proxies worth watching around retail-data releases.
Basic Materials (38 companies, ~$112 B) is the smallest sector by both count and value. Lithium, gold, and fertiliser names dominate, making this a de-facto commodities-cycle and energy-transition play within the tracker.
What to Watch
- Tech earnings seasons move the whole portfolio — four of the five most valuable companies on the planet sit in that single sector.
- Regulatory catalysts hit Communication Services disproportionately given the concentration in platform giants.
- Cross-listed duplicates (Tesla on DE/F, Alphabet as GOOGL/GOOG, Obsidian on two exchanges) can inflate sector counts; the market-cap figures are the cleaner signal.
- EM exposure in Healthcare and Industrials adds currency and liquidity risk that is easy to overlook when scanning headline sector totals.