DES MOINES, Iowa (AP) — DES MOINES, Iowa (AP) — Principal Financial Group Inc. (PFG) on Monday reported third-quarter net income of $631.9 million. The Des Moines, Iowa-based company said it had net income of $2.91 per share. Earnings, adjusted for non-recurring gains, were $2.22 per share. The results did not meet Wall Street expectations....