Oceaneering International (OII) Stock Chart & Stock Price History $24.41 +0.25 (+1.02%) Closing price 10/3/2025 03:59 PM EasternExtended Trading$24.24 -0.17 (-0.68%) As of 04:06 AM 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 8.04%, with a year-to-date return of -6.42%. In the past month, the stock has increased 1.57%, reflecting recent market activity. As of the latest close, Oceaneering International traded at $24.41 with a market cap of $2.45 billion and volume of 806,812 shares. Five years ago, the stock traded at $3.66, representing a 566.83% increase over that period. At the time, it had a market cap of $363.39 million and a volume of 1.33 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. Subscribe Now View SMS TermsBy entering your phone number and clicking the sign-up button, you agree to receive periodic text messages from MarketBeat at the phone number you submitted, including texts that may be sent using an automatic telephone dialing system. Message and data rates may apply. Message frequency will vary. Messages will consist of stock alerts, news stories, and partner advertisements/offers. Consent is not a condition of the purchase of any goods or services. 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Read our full terms of service and privacy policy. 5 Day Performance-3.21%1 Month Performance+1.57%3 Month Performance+14.64%Year-To-Date Performance-6.42%1 Year Performance-8.04%5 Year Performance+566.83% OII Stock Chart for Monday, October, 6, 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 Capitalization10/03/2025$24.20$24.41+0.86%$24.98$24.35806,812 shs$2.45 billion10/02/2025$25.22$24.20-4.03%$25.09$24.15734,068 shs$2.42 billion10/01/2025$24.80$25.22+1.67%$25.33$24.40547,042 shs$2.53 billion09/30/2025$25.09$24.80-1.14%$24.84$24.30578,723 shs$2.49 billion09/29/2025$25.64$25.09-2.16%$25.65$24.89477,875 shs$2.51 billion09/26/2025$25.32$25.64+1.25%$25.91$25.33496,051 shs$2.57 billion09/25/2025$25.20$25.32+0.48%$25.45$24.91517,793 shs$2.54 billion09/24/2025$25.31$25.20-0.43%$25.96$25.17435,740 shs$2.53 billion09/23/2025$24.46$25.31+3.50%$26.30$24.53724,100 shs$2.54 billion09/22/2025$24.32$24.46+0.56%$24.59$23.94616,522 shs$2.45 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. 09/19/2025$24.67$24.32-1.42%$24.56$24.142.16 million shs$2.44 billion09/18/2025$24.22$24.67+1.85%$24.74$24.15453,700 shs$2.47 billion09/17/2025$24.27$24.22-0.20%$24.86$23.81577,397 shs$2.43 billion09/16/2025$24.18$24.27+0.38%$24.57$24.13579,565 shs$2.43 billion09/15/2025$24.25$24.18-0.30%$24.62$24.13524,817 shs$2.42 billion09/12/2025$24.77$24.25-2.09%$24.77$24.24437,627 shs$2.43 billion09/11/2025$24.41$24.77+1.45%$24.78$24.26729,074 shs$2.48 billion09/10/2025$23.87$24.41+2.28%$24.50$23.82485,348 shs$2.45 billion09/09/2025$24.05$23.87-0.74%$24.79$23.86455,981 shs$2.39 billion09/08/2025$24.03$24.05+0.07%$24.26$23.51496,148 shs$2.41 billion09/05/2025$24.68$24.03-2.64%$24.77$23.89543,816 shs$2.41 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 Oil States International Stock Price Chart Schlumberger 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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