This example shows a time-series line chart of stock closing prices with an interactive tooltip that follows the mouse. The visualization uses d3.csv to load the data and d3.line with d3.scaleTime and d3.scaleLinear to render the path, while a bisector and d3.mouse enable precise date lookup. A crosshair and text labels update on mousemove, displaying the exact close value and formatted date near a red circle marker. The SVG also includes dashed guide lines and axes generated with d3.axisBottom and d3.axisLeft.