posted the highestjump in short interest relative to shares outstanding among SNL-covered insurancecompanies between Feb. 29 and March 15.

The companysaw short interest grow 151 basis points to 10.89% of shares outstanding at theend of the period. Radian recently commencedan underwritten public offering of its senior unsecured notes due 2021, which waslater upsized. Standard& Poor's Ratings Services also upgradedits ratings on the company during the period.

saw the steepest decline in short interest. The percentage of the company's sharesheld short relative to shares outstanding fell 428 basis points to 15.29% as ofMarch 15.

was the most shortedinsurance stock during the period, with short interest increasing 68 basis pointsto 20.45% of shares outstanding.

S&P Ratings and Global MarketIntelligence are owned by McGraw Hill Financial Inc.