The Headmars tracked universe spans 1,702 companies across eight GICS-style sectors as of 2026-07-21. Reading the roster by number of names — a cleaner signal than the aggregate market-cap fields, for reasons discussed below — gives a clear picture of where our coverage is concentrated and where an investor's attention naturally gravitates.
Technology sets the pace
Technology is the single largest sector by headcount at 503 companies, roughly 30% of everything we track. The sample names read like the spine of the modern market: Apple (AAPL), Microsoft (MSFT), NVIDIA (NVDA), and AMD, alongside enterprise software (Salesforce, CRM) and legacy silicon (Intel, INTC). No other sector comes close in breadth, and that concentration means broad market moves will often be Technology moves wearing a disguise.
The long tail: Industrials, Healthcare, Materials
Industrials follows with 339 names — a genuinely global set, from Honeywell (HON) and nVent (NVT) to electric-vertical-takeoff hopeful Archer Aviation (ACHR) and listings in Shanghai and Taipei. Healthcare (288) anchors on defensives like Johnson & Johnson (JNJ), UnitedHealth (UNH), and AbbVie (ABBV). Basic Materials (179) skews toward miners and fertilizer producers — China XLX, Novo Resources, Galantas Gold — a reminder that commodity exposure in our universe is heavily small-cap and cross-listed.
Concentrated, high-profile sectors
The remaining four sectors are smaller by count but carry outsized recognition. Consumer Cyclical (130) is led by Amazon (AMZN) and Tesla (TSLA); Financials (99) by Berkshire (BRK.B), JPMorgan, Visa, and Mastercard; Energy (95) by Exxon (XOM), Shell, and Reliance; and Communication Services (69) — the most concentrated sector we track — by Alphabet (GOOGL), Meta (META), Netflix (NFLX), and Tencent.
A caveat worth flagging
The aggregate market-cap totals in our data behave oddly and should not be read literally. Financials reports the largest total despite only 99 names, while Consumer Cyclical — home to Amazon and Tesla — reports one of the smallest. That inversion, and figures that run into the tens of trillions per sector, point to cross-listing double-counting or unit inconsistencies rather than economic reality. Until reconciled, we'd treat sector rankings by market cap with skepticism and lean on company counts instead.
What to watch
Three things stand out. First, Technology's dominance means single-stock news from a handful of mega-caps can swing the whole tracked set. Second, the heavy presence of cross-listed foreign tickers (.SS, .TW, .HK, .TO) signals real global breadth — and the data-hygiene work that comes with it. Third, the thinnest sectors by name — Communication Services and Energy — are also the most top-heavy, so their behavior will be driven by a few household names rather than a diversified crowd.