You can also track a sector's performance for up to a year. And you can zoom in to see how individual companies are doing for the same periods. In the language of online financial tools, this application is called a heat map. To create the map, choose one of the 11 sectors listed on a pull-down menu. Once the map is formed, you'll see that the large red areas denote major sector players with declining stock prices.
Green areas signify stocks that are up.
In either case, the brighter the color, the bigger the price move. You can navigate your cursor over a square to get the name of the company and then click to get more information. Scrolling Tickers and Screens Heat maps don't track individual trades. With a few mouse clicks, you can set up a scrolling ticker covering stocks within a long list of sectors. Fundamentally Technical The trading community site ClearStation's new Sector tool also screens stocks by sector.