OII
$43.79+1.72%
Oceaneering International Inc.Stock · EnergyRussell 2000 0.1%US Stock Market 0.006%Russell 3000 0.005%
Oceaneering International Inc. monthly returns
Oceaneering International Inc. has averaged 1.71% per month, positive in 51% of months. Month-by-month returns for Oceaneering International Inc. (OII) below, through October 16, 2026 — the table lists the most recent months; the bar chart plots the last 5 years.
Average month
+1.7%
610 months
Best month
+87.5%
May 1986
Worst month
-72.1%
Mar 2020
Positive months
51%
of all months
Oceaneering International Inc. monthly returns#
| Month | Path | Total return |
|---|---|---|
| Oct 2026 | +0.4% | |
| Sep 2026 | -15.7% | |
| Aug 2026 | +6.1% | |
| Jul 2026 | +20.4% | |
| Jun 2026 | +6.0% | |
| May 2026 | +1.8% | |
| Apr 2026 | +5.8% | |
| Mar 2026 | -0.1% | |
| Feb 2026 | +17.9% | |
| Jan 2026 | +25.3% | |
| Dec 2025 | -1.5% | |
| Nov 2025 | +4.8% | |
| Oct 2025 | -6.0% | |
| Sep 2025 | +1.6% | |
| Aug 2025 | +12.4% | |
| Jul 2025 | +4.7% | |
| Jun 2025 | +8.7% | |
| May 2025 | +7.4% | |
| Apr 2025 | -18.6% | |
| Mar 2025 | -1.3% | |
| Feb 2025 | -11.1% | |
| Jan 2025 | -4.7% | |
| Dec 2024 | -13.0% | |
| Nov 2024 | +22.9% | |
| Oct 2024 | -1.9% | |
| Sep 2024 | -7.9% | |
| Aug 2024 | -10.1% | |
| Jul 2024 | +26.9% | |
| Jun 2024 | -0.1% | |
| May 2024 | +3.4% | |
| Apr 2024 | -2.1% | |
| Mar 2024 | +18.4% | |
| Feb 2024 | -4.9% | |
| Jan 2024 | -2.3% | |
| Dec 2023 | +3.0% | |
| Nov 2023 | -6.0% | |
| Oct 2023 | -14.5% | |
| Sep 2023 | +12.9% | |
| Aug 2023 | +1.5% | |
| Jul 2023 | +20.1% | |
| Jun 2023 | +22.1% | |
| May 2023 | -13.6% | |
| Apr 2023 | +0.6% | |
| Mar 2023 | -15.6% | |
| Feb 2023 | -2.2% | |
| Jan 2023 | +22.1% | |
| Dec 2022 | +15.1% | |
| Nov 2022 | +8.6% | |
| Oct 2022 | +75.8% | |
| Sep 2022 | -10.1% | |
| Aug 2022 | -16.7% | |
| Jul 2022 | -0.6% | |
| Jun 2022 | -16.0% | |
| May 2022 | +12.3% | |
| Apr 2022 | -25.3% | |
| Mar 2022 | +3.6% | |
| Feb 2022 | +12.4% | |
| Jan 2022 | +15.2% | |
| Dec 2021 | +5.8% | |
| Nov 2021 | -21.4% | |
| Oct 2021 | +2.1% | |
| Sep 2021 | +8.3% | |
| Aug 2021 | -7.2% | |
| Jul 2021 | -14.8% | |
| Jun 2021 | +9.1% | |
| May 2021 | +32.7% | |
| Apr 2021 | -5.9% | |
| Mar 2021 | -3.2% | |
| Feb 2021 | +39.6% | |
| Jan 2021 | +6.3% | |
| Dec 2020 | +31.0% | |
| Nov 2020 | +48.8% | |
| Oct 2020 | +15.9% | |
| Sep 2020 | -34.7% | |
| Aug 2020 | -4.1% | |
| Jul 2020 | -12.1% | |
| Jun 2020 | -0.5% | |
| May 2020 | +24.9% | |
| Apr 2020 | +74.8% | |
| Mar 2020 | -72.1% | |
| Feb 2020 | -15.1% | |
| Jan 2020 | -16.8% | |
| Dec 2019 | +11.2% | |
| Nov 2019 | -5.3% | |
| Oct 2019 | +4.5% | |
| Sep 2019 | +4.6% | |
| Aug 2019 | -16.1% | |
| Jul 2019 | -24.2% | |
| Jun 2019 | +24.3% | |
| May 2019 | -14.6% | |
| Apr 2019 | +21.8% | |
| Mar 2019 | +2.1% | |
| Feb 2019 | -1.5% | |
| Jan 2019 | +29.7% | |
| Dec 2018 | -27.9% | |
| Nov 2018 | -11.4% | |
| Oct 2018 | -31.4% | |
| Sep 2018 | -2.4% | |
| Aug 2018 | +3.3% | |
| Jul 2018 | +7.5% | |
| Jun 2018 | +6.8% | |
| May 2018 | +12.2% | |
| Apr 2018 | +14.6% | |
| Mar 2018 | +0.9% | |
| Feb 2018 | -11.1% | |
| Jan 2018 | -2.2% | |
| Dec 2017 | +8.2% | |
| Nov 2017 | -3.4% | |
| Oct 2017 | -23.0% | |
| Sep 2017 | +16.5% | |
| Aug 2017 | -11.5% | |
| Jul 2017 | +12.3% | |
| Jun 2017 | -6.3% | |
| May 2017 | -7.1% | |
| Apr 2017 | -2.5% | |
| Mar 2017 | -4.4% | |
| Feb 2017 | +2.2% | |
| Jan 2017 | -1.3% | |
| Dec 2016 | +5.9% | |
| Nov 2016 | +12.6% |
Monthly total return (since Nov 2021)#
-50%0%50%
Nov 2021-21%
Dec 2021+5.8%
Jan 2022+15%2022
Feb 2022+12%
Mar 2022+3.6%
Apr 2022-25%
May 2022+12%
Jun 2022-16%
Jul 2022-0.56%
Aug 2022-17%
Sep 2022-10%
Oct 2022+76%
Nov 2022+8.6%
Dec 2022+15%
Jan 2023+22%2023
Feb 2023-2.2%
Mar 2023-16%
Apr 2023+0.57%
May 2023-14%
Jun 2023+22%
Jul 2023+20%
Aug 2023+1.5%
Sep 2023+13%
Oct 2023-15%
Nov 2023-6.0%
Dec 2023+3.0%
Jan 2024-2.3%2024
Feb 2024-4.9%
Mar 2024+18%
Apr 2024-2.1%
May 2024+3.4%
Jun 2024-0.08%
Jul 2024+27%
Aug 2024-10%
Sep 2024-7.9%
Oct 2024-1.9%
Nov 2024+23%
Dec 2024-13%
Jan 2025-4.7%2025
Feb 2025-11%
Mar 2025-1.3%
Apr 2025-19%
May 2025+7.4%
Jun 2025+8.7%
Jul 2025+4.7%
Aug 2025+12%
Sep 2025+1.6%
Oct 2025-6.0%
Nov 2025+4.8%
Dec 2025-1.5%
Jan 2026+25%2026
Feb 2026+18%
Mar 2026-0.08%
Apr 2026+5.8%
May 2026+1.8%
Jun 2026+6.0%
Jul 2026+20%
Aug 2026+6.1%
Sep 2026-16%
Oct 2026+0.37%
Oceaneering International Inc. returns by calendar month#
Every month of every year since 1976, one tick per year on a shared scale; the dark bar is the month's average. Total returns, dividends reinvested.
October 2026 so far: +0.37% — 24th of 51 Octobers since 1976 at the last close; the average October returned -2.6%.
| Month | −90%0+90% | Average | Median | Up | Best | Worst |
|---|---|---|---|---|---|---|
| Jan | +3.3% | -0.6% | 49% | +71.5% 1987 | -35.8% 1999 | |
| Feb | +3.2% | +3.1% | 57% | +39.6% 2021 | -23.5% 1986 | |
| Mar | +1.8% | +0.9% | 55% | +51.2% 1999 | -72.1% 2020 | |
| Apr | +3.2% | +2.0% | 55% | +74.8% 2020 | -27.3% 1986 | |
| May | +4.7% | +1.9% | 59% | +87.5% 1986 | -29.4% 2010 | |
| Jun | +0.2% | -0.4% | 41% | +36.4% 1987 | -23.5% 1984 | |
| Jul | +1.5% | +3.7% | 59% | +30.0% 1987 | -24.2% 2019 | |
| Aug | +2.9% | +1.5% | 53% | +46.1% 1989 | -33.5% 1998 | |
| Sep | -3.1% | -2.5% | 35% | +53.0% 1998 | -34.7% 2020 | |
| Oct | -2.6% | -1.4% | 46% | +75.8% 2022 | -47.2% 2008 | |
| Nov | +0.6% | -1.7% | 48% | +48.8% 2020 | -30.0% 1985 | |
| Dec | +4.7% | +4.3% | 60% | +46.7% 1987 | -27.9% 2018 |
Methodology#
Monthly returns are total returns (dividends reinvested), computed from OII's split- and dividend-adjusted month-end closes. The table shows the most recent 120 months and the bar chart the most recent 60. See the year-by-year returns for the annual view. Past performance does not predict future returns; not investment advice.
FAQ#
- What is Oceaneering International Inc.'s average monthly return?
- Oceaneering International Inc. (OII) has averaged about 1.71% per month, positive in roughly 51% of months. The best month was May 1986 (+87.5%) and the worst was Mar 2020 (-72.1%).
More on Oceaneering International Inc.
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