Arch Capital Group (ACGL) late Monday reported Q4 after-tax operating income of $2.26 per diluted share compared with $2.49 a year earlier.

Analysts polled by FactSet expected $1.81.

Net premiums written for the quarter ended Dec. 31 was $3.82 billion, compared with $3.26 billion a year earlier.

Analysts expected $4.02 billion.

Shares of the insurance company were 2% higher in extended trading Monday night.