The Headmars universe currently spans 1,922 companies across eight sectors. Looking at where the names cluster tells you a lot about what the platform can actually reason over — and where its data still needs a scrub.
Breadth belongs to technology
By sheer company count, Technology leads decisively with 555 names (~29% of the universe) — anchored by the megacaps you would expect: Apple, Microsoft, and NVIDIA, alongside AMD, Salesforce, and Intel. This is the deepest, most liquid corner of the tracked set, and it means any AI strategy running here has the richest cross-sectional signal in tech.
Industrials is the surprise runner-up at 372 companies (~19%), and its sample names hint at why: it is genuinely global and thematic, mixing Honeywell and nVent with Chinese and Taiwanese manufacturers and speculative eVTOL play Archer Aviation. Healthcare rounds out the top tier at 320 (~17%), spanning insurers (UnitedHealth), pharma (Johnson & Johnson, AbbVie), and small international biotech.
The middle and the tail
Basic Materials (235) and Consumer Cyclical (138) occupy the middle — the latter carrying heavyweights like Amazon, Tesla, and Home Depot despite a smaller count. The thinner tail is Financials (115), Energy (112), and Communication Services (75). Communication Services is small but concentrated in quality: Alphabet, Meta, Netflix, Disney, and Tencent. A short list here is less a weakness than a reflection of how few mega-platforms define the sector.
When market cap disagrees with headcount
Here is where the data gets interesting — and where I would urge caution. The reported market-cap totals do not track company counts, and they don't track reality either. Financials shows the largest total at roughly $159 trillion, with Energy ($107T) and Basic Materials ($46T) all reported above Technology (~$22T). Those figures exceed plausible global aggregates by a wide margin.
The sample names point straight at the cause: the universe is riddled with cross-listings and currency mismatches. Tesla appears as TL0.F and TL0.DE, Novo Resources as NVO.TO and NVO.AX, Galantas Gold as GAL.V and GAL.L, Obsidian Energy as OBE and OBE.TO, and Alphabet as both GOOG and GOOGL. Duplicate listings and unconverted local-currency caps inflate the totals and scramble the ranking.
What to watch
My read: trust the breadth signal (counts) over the notional cap column for now. The count-based picture — tech-heavy, industrials-deep, healthcare-solid — is a fair map of the universe. The market-cap totals are a data-hygiene flag, not an investment thesis.
For investors and for anyone building strategies on this set, three things are worth monitoring: (1) whether cross-listing deduplication collapses those inflated caps toward sane figures; (2) whether Technology's dominance in count translates into concentration risk if strategies overweight the crowded top; and (3) the long thematic tail in Industrials and Materials, where names like Archer Aviation and various lithium and gold miners offer diversification the megacaps can't. Clean the cap data first — then the sector story becomes actionable.