Stock Market Sectors

How This Map Is Built

We rank every covered company within its sector by market cap, then lay the largest of each sector out as one heat map: a tile’s area scales with its market capitalization in US dollars (converted at daily exchange rates, refreshed nightly), and its color shows today’s move from live, 15-minute-delayed prices. Tiles are grouped into the eleven sector sections, each labeled with its cap-weighted day move. Hover or tap any company to preview it, then open its full page.

Frequently Asked Questions

What does this sector map show?: The largest covered companies in each of the eleven sectors — Technology, Healthcare, Financial Services, Industrials, Consumer Cyclical, Consumer Defensive, Energy, Basic Materials, Real Estate, Utilities, and Communication Services — laid out as one heat map. Tile size is market cap and tile color is today’s move, so you can read where the market is moving at a glance.
How is each sector’s move calculated?: It is the market-cap-weighted day change of that sector’s largest covered stocks, computed from live (15-minute delayed) prices against the prior close. It is our coverage-based gauge of the sector, not an official sector index level.
What do the tile size and color mean?: Tile area scales with the company’s market capitalization in US dollars (converted at daily exchange rates, refreshed nightly with a live price overlay), and the color shows today’s percent change — green for up, red for down, deeper as the move grows. Click any tile to open the company’s full page.

How This Map Is Built

Frequently Asked Questions

What does this sector map show?

The largest covered companies in each of the eleven sectors — Technology, Healthcare, Financial Services, Industrials, Consumer Cyclical, Consumer Defensive, Energy, Basic Materials, Real Estate, Utilities, and Communication Services — laid out as one heat map. Tile size is market cap and tile color is today’s move, so you can read where the market is moving at a glance.

How is each sector’s move calculated?

It is the market-cap-weighted day change of that sector’s largest covered stocks, computed from live (15-minute delayed) prices against the prior close. It is our coverage-based gauge of the sector, not an official sector index level.

What do the tile size and color mean?

Tile area scales with the company’s market capitalization in US dollars (converted at daily exchange rates, refreshed nightly with a live price overlay), and the color shows today’s percent change — green for up, red for down, deeper as the move grows. Click any tile to open the company’s full page.