Kosmos Energy (KOS) Stock Chart & Stock Price History GBX 246 -2.00 (-0.81%) As of 05/18/2026 12:21 PM Eastern Add Compare Share Share Chart Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsHeadlinesInsider TradesBuy This Stock Kosmos Energy Stock Price Performance The Kosmos Energy (KOS) stock chart highlights key performance trends across multiple timeframes. Over the last 12 months, the stock's price has increased 76.98%, with a year-to-date return of 264.44%. In the past month, the stock has increased 46.87%, reflecting recent market activity. As of the latest close, Kosmos Energy traded at GBX 246 with a market cap of £1.46 billion and volume of 27,491 shares. Five years ago, the stock traded at GBX 214, representing a 14.95% increase over that period. At the time, it had a market cap of £873.22 million and a volume of 6,305 shares. 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Read our full terms of service and privacy policy. 5 Day Performance+11.84%1 Month Performance+46.87%3 Month Performance+89.23%Year-To-Date Performance+264.44%1 Year Performance+76.98%5 Year Performance+14.95% KOS Stock Chart for Tuesday, May, 19, 2026 KOS Chart by TradingView Kosmos Energy Stock Price History Daily Weekly Monthly Yearly Time Frame Custom Range 1 Month 3 Months 6 Months Year-to-Date 1 Year 3 Year 5 Year Time Frame Start Date End Date Export DateOpening PriceClosing PriceHighLowVolumeMarket Capitalization05/18/2026GBX 216GBX 246+13.89%GBX 248GBX 21627,491 shs£1.46 billion05/15/2026GBX 219.96GBX 216-1.80%GBX 216GBX 21461 shs£1.28 billion05/14/2026GBX 234GBX 219.96-6.00%GBX 234GBX 2163,773 shs£1.30 billion05/13/2026GBX 220.90GBX 234+5.93%GBX 234GBX 2206,523 shs£1.39 billion05/12/2026GBX 216GBX 220.90+2.27%GBX 232GBX 20238,349 shs£1.31 billion05/11/2026GBX 211GBX 216+2.37%GBX 216GBX 20015,868 shs£1.28 billion05/08/2026GBX 206GBX 211+2.43%GBX 211GBX 197.5030,720 shs£1.25 billion05/07/2026GBX 218GBX 206-5.50%GBX 217GBX 196.6386,825 shs£1.22 billion05/06/2026GBX 220GBX 218-0.91%GBX 244GBX 20431,027 shs£1.29 billion05/05/2026N/AGBX 220GBX 245GBX 22034,297 shs£1.30 billion Get the Latest News and Ratings for KOS and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Kosmos Energy and its competitors with MarketBeat's FREE daily newsletter. 04/30/2026GBX 216GBX 234+8.33%GBX 234GBX 2161,761 shs£1.39 billion04/29/2026GBX 226.41GBX 216-4.60%GBX 216GBX 21314,262 shs£1.28 billion04/28/2026GBX 205GBX 226.41+10.44%GBX 226.41GBX 20532,949 shs£1.34 billion04/27/2026GBX 192.50GBX 205+6.49%GBX 211.04GBX 2051,249 shs£1.22 billion04/24/2026GBX 210GBX 192.50-8.33%GBX 192.50GBX 192.5037,068 shs£1.14 billion04/23/2026GBX 206GBX 210+1.94%GBX 210GBX 190.5049,186 shs£1.25 billion04/22/2026GBX 183GBX 206+12.57%GBX 206GBX 20616,256 shs£1.22 billion04/21/2026GBX 183.50GBX 183-0.27%GBX 188GBX 18316,256 shs£1.09 billion04/20/2026GBX 167.50GBX 183.50+9.55%GBX 198GBX 176.5033,559 shs£1.09 billion Related Companies BPT Stock Chart TTE Stock Chart DEC Stock Chart GTE Stock Chart EOG Stock Chart NOG Stock Chart SUN Stock Chart VAL Stock Chart EQT Stock Chart WTI Stock Chart Receive KOS Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Kosmos Energy and its competitors with MarketBeat's FREE daily newsletter. This page (LON:KOS) was last updated on 5/19/2026 by MarketBeat.com Staff. 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