Assurant has reported that its net operating income for the second quarter of 2012 recorded a steep rise of 111% to $157.4m or $1.81 per diluted share compared to a net operating income of $74.6m, or $0.76 per diluted share during the same period last year.

The underwriter said that its net income grew by 3% to $169.2m, or $1.94 per diluted share, compared to second quarter 2011 net income of $165m, or $1.67 per diluted share.

Net earned premiums, fees and other income were $1.9bn during the latest quarter period, with an increase of 2% compared to second quarter 2011, reflecting improvement in areas targeted for growth.

Assurant president and CEO Robert Pollock said the firm had focused on areas targeted for profitable growth.

For the quarter ended 30 June 2012, its net investment income rose to $199.3m, versus $173.8m in second quarter 2011, and the resilt includes $29.8m of income from real estate joint venture partnerships.

Assurant, through its key businesses which includes Assurant Solutions, Assurant Specialty Property, Assurant Health and Assurant Employee Benefits, offers specialized insurance products and related services in North America and select worldwide markets.