Market map by size

135 companies with a stored snapshot, in five market-cap bands. Each band is its own map, sized by market cap inside the band and shaded by the last completed session. A mega cap is at least a hundred times the size of a small cap, so on one shared scale the small caps would be specks: sizes here compare within a band, never across bands.

Sessions 2026-10-19 to 2026-10-20: each tile states its own in its label and title.

Mega cap 200B USD and up

39 companies · $38.82T combined · +0.76% cap-weighted · -0.24% median · sessions 2026-10-19 to 2026-10-20

Large cap 10B to 200B USD

35 companies · $4.05T combined · +0.19% cap-weighted · +0.36% median · sessions 2026-10-19 to 2026-10-20

Mid cap 2B to 10B USD

34 companies · $117.3B combined · +0.98% cap-weighted · +1.42% median · sessions 2026-10-19 to 2026-10-20

Small cap 300M to 2B USD

24 companies · $28.1B combined · +1.35% cap-weighted · +1.56% median · sessions 2026-10-19 to 2026-10-20

Micro cap under 300M USD

3 companies · $503M combined · -0.24% cap-weighted · -0.26% median · sessions 2026-10-19 to 2026-10-20
not drawn

A tile needs a market cap and a dated quote no more than a week behind the newest. These are listed rather than dropped:

ABNB (no market cap) · CATO (no market cap) · HLX (last quote 2026-09-01, over a week behind the newest) · HOOD (no market cap) · META (no market cap) · SHOP (no market cap) · XYZ (no market cap)

Bands: mega 200B USD and up, large 10B to 200B, mid 2B to 10B, small 300M to 2B, micro under 300M, the same cut-offs the screener’s plain-English search uses. Market caps are the ones on each company’s workspace; moves are the last completed session against the one before. The sector map → · the SPY holdings map → · the insider map → · how every figure is made →