DES MOINES, Iowa - Shares in Principal Financial Group Inc. fell sharply Monday, hitting a 52-week low as the broader market fell and insurers in general saw declines. The Des Moines-based retirement, insurance and financial services company shares fell $3.10, or 9.7 percent, to $29.41 in afternoon trading after sinking to a 52-week low of $27.20 earlier in the session. They have traded as high as $70.85 in the past 52 weeks. Morgan Stanley analyst Nigel Dally downgraded Principal on Thursday saying the company could face significantly greater investment losses and a potential shortfall in capital of as much as $1 billion. "In an environment where investors are showing significant risk aversion to companies potentially at risk of raising capital, we believe investors should consider reducing exposure," he wrote. Analyst John...
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