How do your BATS real-time charts work?

How do your BATS real-time charts work?

For US symbols, our BATS real-time charts use data from the BATS exchange. This is a free alternative to the “official” real-time data from the exchanges, but there are a few key differences that users should be aware of:

  • BATS data is only available for US stocks, and some thinly-traded stocks are not available at all
  • Volume data from the BATS exchange is significantly lower than the volume data from the NYSE/Nasdaq
  • Price data can be different than the price data from the NYSE/Nasdaq, especially for thinly-traded stocks

Because of these limitations, we display this BATS data differently on our charts:

  • We highlight BATS data bars in yellow, to distinguish them from final, official data on the chart.
  • We only display BATS data for the most recent 15 minutes on our charts. After that, we replace the BATS bar(s) with delayed “official” bars from the major exchanges.
  • For intraday charts, we place a vertical, dashed yellow line on the chart to show where the free real-time bars end and the official bars begin.
  • Because the volume data from the BATS exchange is so much smaller than the official volume data, we do not display volume or volume-based indicators for the BATS section of the chart.

Click here for a full explanation of BATS real-time data, including example charts that compare a BATS-based chart with an Official Real-Time chart.