I have a beginning balance and an ending balance, I have the date and amount
of each transaction in this time period. I am trying to calculate the ROI or
rate of return for my investments during this timeframe.

I have found a number of articles on different Excel function, but I have
not been able to get close to what the investment company says is the rate of
return. So the assumption is, I haven't figured it out yet.

Thanks - Dave