Measure the activity of a segment : opening rate/segment?

Hello,

I have the statistics and the opening rate of each of my email, but I would actually like to know more about how a segment is “active” or reacting to the campaigns.

So far, I can only have the points and the last active date, which is already great. I was just wondering if there is there any possibility for me to know the average opening rate of one segment ?

Thank you !