The reason I am asking is I am trying to find out the ROI, and I am not sure which value to use as my initial investment. I think it should be the preffered dividend, which is $2.00 per share, but confirmation on this guess would be nice :)

Thank you!

ROI on preferred shares is to be calculated on its market value, if available.

I was referring to the initial investment. The market value in question is $125 per share, but there are 2 numbers involved in finding the ROI, and the second number is either $2.00 or $100.00

It would have helped if you had posted the full question. My answer was based on information available.