The Shape of the Universe
As of 4 July 2026, the Headmars tracked universe spans 1,429 listings across eight sectors. The distribution is far from uniform: three sectors — Technology, Industrials, and Healthcare — account for nearly 69% of all companies, while Communication Services and Financials each contribute fewer than 90 names. Understanding this shape matters because any signal or screen you run inherits the universe's structural biases before you touch a single parameter.
Technology: The Dominant Count
With 437 companies and an aggregate market cap of roughly $19.0 trillion, Technology is the clear headline sector. The sample roster reads like a who's-who of mega-caps: Apple, Microsoft, NVIDIA, AMD, Salesforce, and Intel. That breadth — from semiconductors to cloud SaaS to consumer hardware — means sector-level signals here can behave more like broad-market signals than targeted industry reads. Investors watching this bucket should sub-sector with care; a chip-cycle move and an enterprise-software re-rating can offset each other inside the same sector label.
The Market-Cap Outliers: Financials and Basic Materials
Here is where the data surprises. Financials fields only 83 companies — the second-smallest cohort — yet registers the largest aggregate market cap in the universe at approximately $98.6 trillion. The sample names explain the concentration: Berkshire Hathaway, JPMorgan Chase, Visa, Mastercard, and Bank of America are each among the most valuable institutions on the planet. A handful of names drives an outsized fraction of that total.
Basic Materials tells a similar story from a different angle: 122 companies, but an aggregate of roughly $44.2 trillion — second only to Financials by this measure. The sample here skews small and cross-listed (China XLX Fertilizer, Novo Resources on both Toronto and Australian exchanges, Galantas Gold in two venues, Argentina Lithium). Cross-listing inflates the raw company count without adding independent economic exposure; investors should be conscious that headline figures include dual-listed duplicates.
The Middle Tier: Healthcare and Industrials
Healthcare (240 companies, ~$3.4T) and Industrials (300 companies, ~$3.4T) are the universe's numerically deep, cap-moderate sectors. Healthcare spans U.S. mega-caps (Johnson & Johnson, UnitedHealth, AbbVie), a consumer-facing telehealth name (GoodRx), and smaller Korean and Chinese biotech listings. Industrials similarly blends large global operators like Honeywell with early-stage names like Archer Aviation and cross-listed Chinese manufacturers — a wide dispersion of risk profiles under one label.
Smaller Sectors Worth Watching
Consumer Cyclical (114 companies, ~$534B) has giant household names — Amazon, Tesla, Alibaba, Home Depot — but the aggregate cap is relatively modest, partly because Tesla appears in duplicate under European exchange tickers (TL0.F, TL0.DE). Strip cross-listings and the real economic weight is higher than it looks.
Communication Services (56 companies, ~$5.3T) punches above its count with Alphabet (represented twice as GOOGL and GOOG), Meta, Netflix, Disney, and Tencent. This is one of the most concentrated sectors by liquidity; a shift in ad-market sentiment or streaming subscriber trends can move the whole bucket.
Energy (77 companies, ~$1.8T) blends U.S. majors (Exxon, Antero), a European super-major (Shell), an Indian conglomerate (Reliance Industries), and smaller Canadian names — useful for cross-geographic energy exposure but requiring FX awareness.
What to Watch
Three structural features stand out for anyone building screens or agent signals on this universe:
- Cap concentration in small sectors — Financials and Basic Materials have low company counts but dominate aggregate cap; equal-weight and cap-weight approaches will produce very different results.
- Cross-listing noise — multiple sectors contain the same underlying company under different exchange tickers. Deduplication is a prerequisite for clean analysis.
- Sector breadth in Technology and Industrials — with 437 and 300 names respectively, industry-level filters matter more than sector-level ones for actionable signals.