The Lay of the Land
As of June 2026, the Headmars tracked universe spans 578 companies across eight sectors and multiple global exchanges, from the NYSE to the Shanghai Stock Exchange and the Hong Kong Stock Exchange. Aggregate tracked market capitalisation stands at roughly $30 trillion, but that figure is anything but evenly distributed.
Technology: The Undisputed Anchor
With 194 companies and roughly $16.9 trillion in combined market cap, Technology alone accounts for approximately 56 % of the entire tracked universe by capitalisation. The roster reads like a who's-who of mega-cap computing: Apple, Microsoft, NVIDIA, AMD, Salesforce, and Intel all feature, alongside dozens of smaller names that fill out the sector's long tail.
The sheer weight of Technology means that any meaningful move in its largest constituents — particularly the sub-$10T names like Apple and Microsoft — will ripple through aggregate platform metrics. Investors tracking a diversified portfolio here should be especially attentive to semiconductor cycles (NVDA, AMD, INTC) and enterprise-software renewal rates (CRM).
Communication Services: Fewer Names, Enormous Density
Communication Services fields just 26 companies, yet its $5.2 trillion combined cap makes it the second-heaviest sector — implying an average market value north of $200 billion per name. Alphabet (listed twice as GOOGL and GOOG), Meta, Netflix, Disney, and Tencent (0700.HK) account for most of that weight.
The concentration is a double-edged sword: a handful of ad-market or streaming earnings reports can move the sector index materially, but the names themselves are broadly followed and liquid.
Healthcare: Depth Without the Cap Weight
At 122 companies, Healthcare is the second-most-populated sector, yet its $3.1 trillion aggregate cap is a fraction of Technology's. The mix is deliberately global — Johnson & Johnson, UnitedHealth, and AbbVie anchor the US side, while Chinese pharma names (603207.SS) and Korean biotech (187660.KQ, PenetriumBio) add exposure to non-US drug pipelines. Users watching this sector should track regulatory calendars across multiple jurisdictions.
Industrials and Energy: Cyclical Ballast
Industrials (84 companies, $2.3T) and Energy (37 companies, $1.5T) together add meaningful cyclical exposure. The Industrial cohort ranges from electrical infrastructure (nVent Electric, Honeywell) to emerging mobility (Archer Aviation) and Asian manufacturing names on the Shanghai and Taiwan exchanges. Energy leans on majors — ExxonMobil, Shell, Reliance Industries — balanced by smaller North American producers like Antero Resources and Obsidian Energy.
Financials and Consumer Cyclical: Underweighted but Iconic
Financials (39 companies, ~$601B) and Consumer Cyclical (50 companies, ~$348B) punch below their real-world weight, likely because many users hold these through ETFs rather than individual names. That said, the names present — Berkshire Hathaway, JPMorgan, Visa, Mastercard, Amazon, Tesla, Home Depot, Alibaba — are among the most-watched equities globally.
Note that Tesla appears in Consumer Cyclical under at least three tickers (TSLA, TL0.F, TL0.DE), reflecting cross-listed German DR positions; users aggregating across accounts should verify de-duplication is active.
Basic Materials: The Thin Tail
Basic Materials closes out the list with 26 companies and a tracked cap of just $17.5 billion — less than 0.1 % of the universe. The cohort is dominated by micro-cap mining and fertiliser plays spanning Hong Kong, Toronto, and the ASX. Position sizes here warrant extra scrutiny on liquidity.
What to Watch
- Concentration risk: Tech + Comms represent ~73 % of tracked cap in under 40 % of company count — a broad market drawdown in mega-cap tech would dominate portfolio-level P&L.
- Global exchange diversity: Cross-listed names (Tesla on Frankfurt, Obsidian on both NYSE and TSX) can inflate apparent position sizes; the platform's FX layer matters here.
- Healthcare's long tail: With 122 names including pre-revenue biotech, volatility in the sector's lower tiers can be significant even if aggregate cap appears stable.