US Stock Market Heatmap — Sector Treemap by Market Cap
A treemap of tracked US stocks: tile size = market cap (delayed IEX price × latest reported shares), color = day change, grouped by sector (derived from the Select Sector SPDR funds’ SEC N-PORT holdings — not official GICS). Delayed data, not investment advice.
Sources: delayed IEX prices · SEC XBRL share counts · Select Sector SPDR fund N-PORT holdings · not investment advice