Most heat maps provided on other websites look at the S&P 500, Dow 30 and Nasdaq, however, and as useful as those maps are to explain what is happening in the U.S. market, they do not accurately ...

Looking at a heat map of the market today ... down 3% following earnings. Netflix (Nasdaq: NFLX) is one of the more notable gainers today. We hosted a live blog during their earnings yesterday ...