A candlestick is produced up of four data factors: the Open, High, Minimal, and Close (also known as the OHLC values). The Open and shut are the 1st and past recorded price for that supplied timeframe, even though the Lower and High are the lowest and highest recorded price, https://financefeeds.com/voo-stock-price-a-glimpse-of-vanguard-sp-500-index-fund-company/