The share price of Kosmos Energy Ltd. (NYSE:KOS) fell by 10.68% between December 10 and December 17, 2025, putting it among the Energy Stocks that Lost the Most This Week. Kosmos Energy (KOS) Price Targets Trimmed by Analysts Kosmos Energy Ltd. (NYSE:KOS) is a leading deepwater exploration and production company focused on meeting the world’s growing demand for energy. On December 12, Mizuho analyst William Janela lowered the firm’s price target on Kosmos Energy Ltd. (NYSE:KOS) from $2 to$1.50, but mai ...