Key TakeawaysModerna shares tumbled Monday after the company cut its 2025 revenue forecast by $1 billion.The company expects much of its revenue to be realized in the back half of the year from its Covid-19 and RSV vaccines.Shares of Moderna have lost about two-thirds of their value over the past year and are well off their all-time high in August 2021. Shares of pharmaceutical giant Moderna (MRNA) plunged Monday after the company cut its 2025 revenue forecast by $1 billion. The company now projects revenue ...