Oceaneering International (OII) Stock Chart & Stock Price History $22.11 +0.34 (+1.58%) Closing price 03:59 PM EasternExtended Trading$22.18 +0.07 (+0.30%) As of 04:11 PM Eastern Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Polygon.io. Learn more. Add Compare Share Share Chart Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestTrendsBuy This Stock Oceaneering International Stock Price Performance The Oceaneering International (OII) stock chart highlights key performance trends across multiple timeframes. Over the last 12 months, the stock's price has decreased 12.25%, with a year-to-date return of -15.21%. In the past month, the stock has increased 3.87%, reflecting recent market activity. As of the latest close, Oceaneering International traded at $21.76 with a market cap of $2.18 billion and volume of 897,023 shares. Five years ago, the stock traded at $6.09, representing a 263.12% increase over that period. At the time, it had a market cap of $595.62 million and a volume of 1.64 million shares. Receive OII Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Oceaneering International and its competitors with MarketBeat's FREE daily newsletter. Email Address 5 Day Performance+1.97%1 Month Performance+3.87%3 Month Performance+20.51%Year-To-Date Performance-15.21%1 Year Performance-12.25%5 Year Performance+263.12% OII Stock Chart for Tuesday, August, 5, 2025 OII Chart by TradingView Oceaneering International 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 to Excel DateOpening PriceClosing PriceHighLowVolumeMarket Capitalization08/04/2025$21.15$21.76+2.86%$21.98$21.14897,023 shs$2.18 billion08/01/2025$21.69$21.15-2.48%$21.67$20.79956,097 shs$2.12 billion07/31/2025$22.40$21.69-3.18%$22.43$21.57800,543 shs$2.17 billion07/30/2025$22.83$22.40-1.90%$22.83$22.16778,874 shs$2.24 billion07/29/2025$22.96$22.83-0.55%$22.94$22.47881,459 shs$2.30 billion07/28/2025$22.71$22.96+1.13%$23.27$22.74793,805 shs$2.31 billion07/25/2025$23.95$22.71-5.20%$23.83$22.65961,216 shs$2.28 billion07/24/2025$22.39$23.95+6.95%$24.21$22.751.66 million shs$2.41 billion07/23/2025$21.18$22.39+5.72%$22.58$21.301.40 million shs$2.25 billion07/22/2025$20.79$21.18+1.91%$21.43$20.72962,195 shs$2.13 billion Get the Latest News and Ratings for OII and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Oceaneering International and its competitors with MarketBeat's FREE daily newsletter. 07/21/2025$20.48$20.79+1.49%$21.03$20.63930,010 shs$2.09 billion07/18/2025$20.59$20.48-0.52%$21.07$20.28692,203 shs$2.06 billion07/17/2025$20.48$20.59+0.53%$20.71$20.21851,405 shs$2.07 billion07/16/2025$20.65$20.48-0.83%$20.91$20.23741,912 shs$2.06 billion07/15/2025$21.09$20.65-2.09%$21.32$20.65628,615 shs$2.08 billion07/14/2025$21.94$21.09-3.87%$21.73$20.92545,485 shs$2.12 billion07/11/2025$21.72$21.94+1.01%$22.23$21.58769,361 shs$2.21 billion07/10/2025$21.39$21.72+1.54%$21.80$21.08803,942 shs$2.19 billion07/09/2025$21.70$21.39-1.43%$21.68$21.31562,027 shs$2.15 billion07/08/2025$20.87$21.70+3.98%$21.83$20.951.03 million shs$2.18 billion07/07/2025$21.29$20.87-1.97%$21.42$20.64715,187 shs$2.10 billion07/04/2025$21.29$21.29$21.54$21.24272,645 shs$2.14 billion Related Companies Patterson-UTI Energy Stock Price Chart Enbridge Stock Price Chart Halliburton Stock Price Chart Liberty Energy Stock Price Chart Matador Resources Stock Price Chart Murphy USA Stock Price Chart Nabors Industries Stock Price Chart Oil States International Stock Price Chart Cactus Stock Price Chart Evolution Petroleum Stock Price Chart Receive OII Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Oceaneering International and its competitors with MarketBeat's FREE daily newsletter. 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