Stock Map: S&P 500 and More

Stock Map visualizes the US stock market with a market heat map (treemap), showing intraday trends for S&P 500, Nasdaq 100, and Dow Jones stocks in a single view. The size of each block corresponds to market cap and the map is sorted by market cap for quick scanning.

In the main view, the S&P 500 is shown by default, with the option to switch to Nasdaq 100 or Dow Jones by tapping the title. Tapping a sector or industry opens a detailed view of its stocks, and tapping a stock opens its details in the iOS Stocks app or other apps/websites like Yahoo Finance if you adjust settings. You can keep an eye on favorites via the Favorites tab, and add widgets to your home screen to monitor either your favorites or an entire industry, with update frequencies adjustable from 10 minutes to 1 hour.