(Reuters) -Sinclair said on Monday its board has authorized a strategic review of the company’s broadcast business and it is considering a separation of its Ventures portfolio, sending its shares up 15% in extended trading.

The review comes as media companies are exploring options for their cable TV businesses, as audiences rapidly abandon linear TV in favor of streaming platforms.

Sinclair owns, operates and provides services to 178 television stations in 81 markets.

The Ventures portfolio is comprised of Sinclair’s private equity and real-estate assets, a cable network that includes coverage of most of tennis’ top tournaments called the Tennis Channel, as well as its ad tech unit, Digital Remedy.

“We expect separating Ventures will crystallize significant value that the market has ov

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