On closer inspection, things are less clear. The value on the y-axis is the same as the size of the bubble. A good description of the axis labels is missing. And the things that the graph wants to display, could be visualized much better in a dedicated data chart for each conclusion:
- How many IPOs in what year: column chart
- Top ranking of IPOs by value at the opening day: bar chart
- Top ranking of IPOs by value in 2012 $: bar chart
- % share price movement on day 1: bar chart (probably only show big, well-known offerings)
- % return on investment 3 years later: bar chart (again for household name IPOs)
Still, if you are a newspaper, maybe getting across that bubbly feeling is more important than the visualizing the insight.