Associated Press: Principal Financial Group Inc. on Thursday reported third-quarter profit of $1.39 billion. On a per-share basis, the Des Moines-based company said it had profit of $5.50. Earnings, adjusted for investment gains, came to $1.69 per share. The results beat Wall Street expectations. The average estimate of seven analysts surveyed by Zacks Investment Research was for earnings of $1.45 per share. The financial services company posted revenue of $4.6 billion in the period. Its adjusted revenue was $3.44 billion, which also topped Wall Street forecasts. Six analysts surveyed by Zacks expected $3.05 billion.