A candlestick is designed up of four data factors: the Open, High, Minimal, and shut (also often called the OHLC values). The Open and Close are the initial and final recorded price for the supplied timeframe, when the Minimal and High are the lowest and highest recorded price, respectively. https://financefeeds.com/from-packets-to-web-pages-an-in-depth-look-at-data-flow-across-networks/