This example shows stock price trends for multiple companies as small multiples, with each symbol rendered as an individual sparkline in its own panel. The visualization uses D3 v3 to load CSV data, nest it by company, and draw both line and area paths. The animation is driven by a `d3.timer` that reveals the data progressively. The code uses `d3.svg.line`, `d3.svg.area`, and `d3.time.scale` to map dates and prices, with each panel scaled independently to its own maximum price.