Trigon Healthcare

(TGH) - Get Report

expects to exceed analysts' expectations for the third and fourth quarters, citing better-than-expected investment income and administrative and medical costs ratios, as well as strong commercial enrollment.

The managed health-care company said it expects third-quarter earnings of 89 cents to 93 cents a share, compared with the

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First Call/Thomson Financial

15-analyst estimate of 79 cents a share. For the fourth quarter, the company expects to earn 82 cents to 86 cents a share, while analysts are looking for 80 cents a share. The EPS estimates exclude realized gains and losses.

Shares of Trigon Healthcare closed

New York Stock Exchange

trading higher by 3.25%, or $1.88, at $59.50.