Kosmos Energy Ltd (KOS) gains 6.3% Posted on April 15, 2021 By News Team Kosmos Energy Ltd (NYSE: KOS) shares gained 6.30% to end trading Wednesday at $2.87 per share – a net change of $0.17. Shares traded between $2.98 and $2.72 throughout the day. 5738585 shares of Kosmos Energy Ltd exchanged hands.