Professional employer organization Insperity Inc. (NYSE: NSP) reported second-quarter revenue rose 15.9%. The company reported growth was driven by a 13% increase in the average number of worksite employees paid per month.

The Houston-based company attributed worksite employee growth to increased new client sales, a continued high level of client retention and an improvement in net hiring of worksite employees by its client base.

Quote

“Our dynamic business model is continuing to generate impressive financial results,” said Chairman and CEO Paul Sarvadi. “Insperity is poised for growth acceleration over the balance of the year and continued double-digit growth into 2019.”

Guidance

Insperity now expects the average number of worksite employees paid per month to increase 14.5% to 15.5% year over year in the third quarter.

Share price and market cap

Shares in Insperity rose 9.36% to $104.00 as of 1:42 p.m. Eastern time today. The company had a market cap of about $4.37 billion.