Discovery CEO David Zaslav on fourth-quarter earnings and outlook

Discovery stock has been on a run this year, up 69% in 2021 and hitting a 52 week high last week. The cable channel company earned 76 cents per share for the fourth quarter, 4 cents a share above estimates. Revenue also topped Wall Street forecasts and Discovery said its Discovery+ streaming service was on pace to have 12 million subscribers by the end of the month. David Zaslav, president and CEO of Discovery, joined "Squawk Box" on Monday to discuss the quarterly results as well as the company's outlook.