A Universe Shaped by Mega-Cap Tech
As of June 6 2026, the Headmars tracked universe spans 439 companies across eight sectors and multiple exchanges — NYSE, Nasdaq, HKEX, Shanghai, TSX, ASX, Frankfurt, and more. Yet for all that breadth, the aggregate picture is strikingly lopsided.
Technology's 133 companies carry a combined market cap of roughly $16.3 trillion, nearly three times the next-largest sector by value. Apple, Microsoft, NVIDIA, AMD, Salesforce, and Intel anchor the cohort, but the sector's depth extends well beyond household names. For any investor benchmarking against a broad index, Technology exposure is essentially unavoidable — and the platform reflects that reality.
Communication Services: Fewer Companies, Enormous Weight
The second-largest sector by market cap is Communication Services at $5.2 trillion, achieved with just 24 companies. That concentration tells its own story: Alphabet (tracked under both GOOGL and GOOG), Meta, Netflix, Disney, and Tencent (0700.HK) together represent a significant share of global digital advertising, streaming, and social commerce. Investors who underweight this sector relative to its index weight may be taking a larger active bet than they realise.
Healthcare and Industrials: Depth and Diversity
Healthcare is the second-largest sector by company count (68) with $2.9 trillion in market cap. The roster mixes large US-listed names — Johnson & Johnson, UnitedHealth, AbbVie — with smaller biotech and pharma listings from South Korea (PenetriumBio) and China (Shanghai Xiao Fang). This global dispersion is worth watching: emerging-market healthcare can behave very differently from its developed-market counterparts, particularly around regulatory catalysts and currency risk.
Industrials (64 companies, $2.1 trillion) is similarly eclectic, pairing established operators like Honeywell with early-stage names such as Archer Aviation (ACHR, electric air taxis) and export-oriented shipping via ZIM. The sector spans infrastructure, electrification, and new-mobility themes simultaneously.
Energy and Financials: Global Scale, Smaller Footprint
Energy (34 companies, $1.5 trillion) extends beyond US majors to Shell (London), Reliance Industries (Mumbai), and smaller Canadian producers like Obsidian Energy — providing exposure to Brent, WTI, and natural gas dynamics across different regulatory regimes.
Financials (28 companies, $469 billion) is lean but high-quality: Berkshire Hathaway, JPMorgan, Visa, Mastercard, and Bank of America alongside regional names like Oberbank. The relatively modest aggregate cap suggests this slice skews toward blue-chip density rather than broad coverage of banks, insurers, and fintechs.
What to Watch
Basic Materials stands out for the opposite reason: 24 companies but only $11.6 billion in total market cap, heavily weighted toward junior miners and lithium explorers. This is a high-volatility, sentiment-driven corner of the universe — positions here warrant tighter position sizing.
Three structural observations worth keeping front of mind:
- Sector concentration risk is real. Technology and Communication Services together represent roughly 80% of tracked market cap. A rotation out of large-cap growth would disproportionately affect the universe.
- Cross-listing duplicates require care. Tesla appears as both TSLA and two Frankfurt-listed depository receipts (TL0.F, TL0.DE); Obsidian Energy trades in both New York and Toronto. Portfolio aggregation logic must consolidate these to avoid double-counting exposure.
- Global listings add factor noise. Shanghai, Hong Kong, and Mumbai listings introduce currency, liquidity, and reporting-standard differences that pure price-return comparisons can obscure.
The universe is richly constructed for a platform focused on multi-exchange portfolios — but navigating it well means understanding where the weight actually sits.