Kosmos Energy Ltd (KOS) falls 6.74% Posted on April 21, 2021 By News Team Kosmos Energy Ltd (NYSE: KOS) shares fell -6.74% to end trading Tuesday at $2.49 per share – a net change of $-0.18. Shares traded between $2.65 and $2.46 throughout the day. 6098301 shares of Kosmos Energy Ltd exchanged hands.