SP500 Heatmap shows the S&P 500 as an interactive treemap by sector, sub-sector, and company, with live prices and historical performance.
Email yaroshenkoms@gmail.com and describe what happened — screenshots help.
Prices look frozen. Live prices only update during regular U.S. market hours (9:30–16:00 America/New_York, weekdays). Outside that window, prices show the last regular-session price on purpose.
Is the data real? Yes — company/sector data, historical prices, and live quotes all come from real market data sources.
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