It has been about a month since the last earnings report for Principal Financial (PFG) . Shares have added about 3% in that time frame, outperforming the S&P 500.Will the recent positive trend continue leading up to its next earnings release, or is Principal Financial due for a pullback? Well, first let's take a quick look at the most recent earnings report in order to get a better handle on the recent drivers for Principal Financial Group, Inc. before we dive into how investors and analysts have reacted as ...