The Shape of the Universe
As of 27 June 2026, the Headmars tracked universe spans 1,278 companies across eight sectors, representing approximately $49.6 trillion in combined market capitalisation. Two sectors — Technology and Financials — account for more than 70 % of that total despite holding fewer than 37 % of the names. Everything else is fighting for the remaining quarter of the capital map.
Technology: The Heavyweight Nobody Can Ignore
With 395 companies and a combined market cap of $18.9 trillion, Technology is the single largest sector by every measure. The usual suspects anchor it — Apple, Microsoft, NVIDIA, AMD, Salesforce, Intel — but the depth is what makes it interesting for systematic analysis. 395 names means a researcher can study subsectors (semiconductors, cloud infrastructure, enterprise software) rather than just picking winners from the top ten.
For an AI-driven platform, this density is a feature: more data, more comparable peers, more signal to extract.
Financials: Fewer Names, Enormous Weight
Financials is the universe's most striking outlier. Only 73 companies, yet a combined cap of $16.1 trillion — implying an average of roughly $220 billion per name. JPMorgan, Visa, Mastercard, Berkshire Hathaway, Bank of America: these are institutions whose moves ripple across every other sector. Investors watching macro rotation should treat Financials as a leading indicator rather than a destination in itself.
Communication Services: High Efficiency, Small Footprint
49 companies, $5.2 trillion. The per-name average (~$107 billion) sits between Technology and Financials, driven by megacaps like Alphabet (tracked under both GOOGL and GOOG), Meta, Netflix, Disney, and Tencent. The small count and global spread — including Hong Kong-listed 0700.HK — signal that this sector skews toward dominant platforms rather than a long tail of challengers.
The Mid-Tier: Healthcare and Industrials
Healthcare (223 companies, $3.3 trillion) and Industrials (272 companies, $3.3 trillion) are nearly identical in aggregate cap despite wildly different compositions. Healthcare leans toward US mega-caps — JNJ, UNH, AbbVie — alongside a visible tail of Korean biotech and Chinese pharma names. Industrials is more geographically dispersed, mixing Honeywell with Chinese high-tech manufacturers, Taiwanese meter makers, and emerging eVTOL plays like Archer Aviation.
The low per-name averages in both sectors (~$14–15 billion) suggest fertile ground for small- and mid-cap discovery — exactly where AI-assisted screening tends to outperform a manual process.
Smaller Sectors Worth Watching
Energy (71 names, $1.8 trillion) spans integrated majors (ExxonMobil, Shell, Reliance Industries) down to sub-billion-dollar Canadian producers like Obsidian Energy — the same company cross-listed on both NYSE and TSX, a pattern that appears elsewhere in the universe.
Consumer Cyclical (107 names, $534 billion) contains some of the largest brand names globally — Amazon, Tesla (also cross-listed on Frankfurt and XETRA), Home Depot, Alibaba — yet the aggregate cap looks modest because the long tail of retailers and auto names drags the average down.
Basic Materials (88 names, $320 billion) is the most speculative corner of the universe, populated by junior miners, lithium explorers, and gold developers traded across Canadian, Australian, and Hong Kong exchanges.
What to Watch
Three structural observations worth keeping front of mind:
- Cross-listing density is a signal in itself. The same underlying equity appearing under multiple tickers (Tesla on three exchanges, NVO on two) tests any deduplication logic and inflates raw company counts — worth normalising before building concentration metrics.
- The Technology-Financials duopoly means sector rotation matters more here than in a diversified index. A shift of even 5 % of capital between those two sectors reshapes the entire picture.
- The long tails in Healthcare, Industrials, and Materials are where discovery adds the most value. Analyst coverage is thin; AI-assisted scanning has a genuine edge.