B. Riley Financial Inc. said it would pay $143 million to purchase internet voice call service magicJack VocalTec Ltd.

The Woodland Hills-based investment bank has snapped up businesses in several sectors since 2014, when it acquired auction and appraisal company Great American Group Inc. The firm used the transaction to go public – Great American was traded over the counter – and was listed on the Nasdaq in July 2015.

B. Riley will bolt magicJack onto its existing internet call service United Online Inc., the company said. The firm paid $8.71 a share for magicJack, a 23 percent premium on the company’s 90-day average share price.

B. Riley Chief Executive Bryant Riley said in a statement the magicJack acquisition was part of a strategy to invest in what the firm saw as undervalued assets.

“We believe that magicJack is representative of the type of proprietary investment with attractive return characteristics that are often overlooked by others, but where we are uniquely qualified to leverage our balance sheet and comprehensive platform in order to maximize the investment potential,” Riley said. “Once fully integrated, we expect magicJack to generate a meaningful contribution to B. Riley’s cash flow and, consistent with our policy of returning capital to shareholders, lead to increased dividends for ourw shareholders in the future.”

B. Riley’s stock price was up almost 2 percent Nov. 9, the day the deal was announced, closing at $16.20.

The firm also released its third quarter earnings last week, reporting $92.4 million in revenue. That was up from $57 million over the same period a year ago. The company said much of the revenue increase was attributed to new acquisitions to B. Riley’s capital markets unit, including the $67 million May purchase of investment bank and brokerage firm Wunderlich Securities of Nashville and a June deal for FBR & Co. of Arlington, Va.

“This quarter also marked the first quarter with FBR Capital Markets & Co. and Wunderlich Securities under the B. Riley Financial umbrella,” Riley said in a statement. “We took significant measures to bring these businesses in line with our operating philosophy.”

B. Riley’s net third quarter income was $400,000, or $0.01 per share. The company’s market cap is $428 million.