TransDigm designs and manufactures original aircraft parts sold to manufacturers. The company also produces aftermarket replacement parts sold to commercial and military aircraft operators. In November, TransDigm announced a $1.4 billion acquisition of the components and subsystems business of Communications & Power Industries. The stock also jumped more than 7% in November after TransDigm announced a special cash dividend of $35 per share. Liwag says TransDigm is her top aerospace industry stock pick in 2024 and is bullish on all the company's primary end markets.