Stocks making the biggest moves midday: Goodyear Tire, Skechers, Mattel & more

Skechers reported 2018 was "a year of record sales," with the fourth quarter breaking above $1 billion in sales for the first time. Goodyear Tire GT — Shares of the tire manufacturer fell nearly 10 percent and hit a new 52-week low Friday after missing Wall Street's expectations for the fourth quarter. Inogen INGN — Inogen's stock slid nearly 7 percent after short-seller Muddy Waters Research said it has taken a short position in the maker of oxygen therapy.