Yes. To adjust the date range, you can drag the handles left or right in the mini chart under the x axis.
The Blue Line represents the total amount of capital you invested in your current portfolio. The Red Line represents the value of your current portfolio based on the most recent financing round for each company. And finally, the Green Line represents any cash that was returned to you from your investments.
Adjusting the date range will allow you to focus in on how much you've invested, the current value of your portfolio based on the most recent round of financing, and your returns over the life of your portfolio.
Hovering over the lines on the graph will provide more detail about your investment history.