Jan 22, 2020 We will need Pandas, Plotly, Json and requests. Requests and Json are needed to retrieve stock information from a free financial API F An interactive candlestick chart. A candlestick chart is used to show an opening and closing value overlaid on top of a total variance. Candlestick charts are often used to show stock value behavior. Candlestick charts. Use a candlestick chart to show the low, high, opening, and closing values of a security for a specific period. For example, get the fluctuation in stock prices each day. You can also use a candlestick chart to track scientific data, like rainfall or temperatures. Learn how to add & edit a chart.