OMEX vs. OII

Last updated Jun 23, 2026

OMEX (Odyssey Marine Exploration, Inc.) and OII (Oceaneering International, Inc.) are both stocks. OMEX operates in Specialty Business Services (Industrials), while OII operates in Oil & Gas Equipment & Services (Energy). Over the past 10 years, OMEX returned -8.32%/yr vs 2.12%/yr for OII. At a 0.14 correlation, their price movements are largely independent.

Performance

OMEX vs. OII - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Odyssey Marine Exploration, Inc. (OMEX) and Oceaneering International, Inc. (OII). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, OMEX achieves a -55.92% return, which is significantly lower than OII's 50.60% return. Over the past 10 years, OMEX has underperformed OII with an annualized return of -8.32%, while OII has yielded a comparatively higher 2.12% annualized return.

OMEX

• 1D: -3.74%
• 1M: -20.00%
• YTD: -55.92%
• 6M: -61.77%
• 1Y: -29.18%
• 3Y*: -38.20%
• 5Y*: -33.85%
• 10Y*: -8.32%

OII

• 1D: 0.36%
• 1M: -6.65%
• YTD: 50.60%
• 6M: 45.69%
• 1Y: 69.59%
• 3Y*: 28.31%
• 5Y*: 16.53%
• 10Y*: 2.12%

*Multi-year figures are annualized to reflect compound growth (CAGR)

OMEX vs. OII - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
OMEX Odyssey Marine Exploration, Inc.	-55.92%	172.22%	-84.52%	19.85%	-25.38%	-26.76%	122.57%	-4.20%	-11.67%	10.23%
OII Oceaneering International, Inc.	50.60%	-7.86%	22.56%	21.67%	54.64%	42.26%	-46.68%	23.22%	-42.76%	-23.73%

Correlation

The correlation between OMEX and OII is 0.11, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.11
Correlation (3Y) Calculated over the trailing 3-year period	0.11
Correlation (5Y) Calculated over the trailing 5-year period	0.12
Correlation (10Y) Calculated over the trailing 10-year period	0.09
Correlation (All Time) Calculated using the full available price history since Oct 26, 1999	0.14

Fundamentals

EPS OMEX : -$1.00 OII : $3.36
PS Ratio OMEX : 56.88 OII : 1.30
Total Revenue (TTM) OMEX : $467.12K OII : $2.80B
Gross Profit (TTM) OMEX : -$1.46M OII : $560.70M
EBITDA (TTM) OMEX : $1.32B OII : $380.02M

Return for Risk

OMEX vs. OII — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.

OMEX

OMEX Risk / Return Rank: 36
OMEX Sharpe Ratio Rank: 32
OMEX Sortino Ratio Rank: 44
OMEX Omega Ratio Rank: 43
OMEX Calmar Ratio Rank: 30
OMEX Martin Ratio Rank: 32

OII

OII Risk / Return Rank: 85
OII Sharpe Ratio Rank: 84
OII Sortino Ratio Rank: 81
OII Omega Ratio Rank: 77
OII Calmar Ratio Rank: 91
OII Martin Ratio Rank: 89

The rank (0–100) shows how this investment's returns compare to the risk taken. Higher = better. Based on the past 12 months of data, combining Sharpe, Sortino, and other metrics used by quantitative funds and institutional investors.

OMEX vs. OII - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Odyssey Marine Exploration, Inc. (OMEX) and Oceaneering International, Inc. (OII). Risk-adjusted metrics are performance indicators that assess an investment's returns in relation to its risk, enabling a more accurate comparison of different investment options.

Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.

	OMEX	OII	Difference
Sharpe ratio: Return per unit of total volatility	-0.23	1.64	-1.88
Sortino ratio: Return per unit of downside risk	0.53	2.31	-1.78
Omega ratio: Gain probability vs. loss probability	1.06	1.27	-0.21
Calmar ratio: Return relative to maximum drawdown	-0.36	4.58	-4.94
Martin ratio: Return relative to average drawdown	-0.57	11.00	-11.57

OMEX vs. OII - Sharpe Ratio Comparison

The current OMEX Sharpe Ratio is -0.23, which is lower than the OII Sharpe Ratio of 1.64. The chart below compares the historical Sharpe Ratios of OMEX and OII, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Drawdowns

OMEX vs. OII - Drawdown Comparison

The maximum OMEX drawdown since its inception was -99.70%, roughly equal to the maximum OII drawdown of -97.37%. Use the drawdown chart below to compare losses from any high point for OMEX and OII.

Drawdown Indicators

	OMEX	OII	Difference
Max Drawdown Largest peak-to-trough decline	-99.70%	-97.37%	-2.33%
Max Drawdown (1Y) Largest decline over 1 year	-81.36%	-15.27%	-66.09%
Max Drawdown (3Y) Largest decline over 3 years	-94.60%	-47.84%	-46.76%
Max Drawdown (5Y) Largest decline over 5 years	-96.05%	-58.64%	-37.41%
Max Drawdown (10Y) Largest decline over 10 years	-97.40%	-93.29%	-4.11%
Current Drawdown Current decline from peak	-99.13%	-54.20%	-44.93%
Average Drawdown Average peak-to-trough decline	-71.63%	-38.54%	-33.09%
Ulcer Index Depth and duration of drawdowns from previous peaks	51.35%	6.36%	+44.99%

Volatility

OMEX vs. OII - Volatility Comparison

Odyssey Marine Exploration, Inc. (OMEX) has a higher volatility of 17.98% compared to Oceaneering International, Inc. (OII) at 13.14%. This indicates that OMEX's price experiences larger fluctuations and is considered to be riskier than OII based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	OMEX	OII	Difference
Volatility (1M) Calculated over the trailing 1-month period	17.98%	13.14%	+4.84%
Volatility (6M) Calculated over the trailing 6-month period	84.03%	33.40%	+50.63%
Volatility (1Y) Calculated over the trailing 1-year period	125.86%	42.67%	+83.19%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	145.91%	51.27%	+94.64%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	119.75%	62.88%	+56.87%

Dividends

OMEX vs. OII - Dividend Comparison

Neither OMEX nor OII has paid dividends to shareholders.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
OII Oceaneering International, Inc.	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	2.13%	3.40%	2.88%
OMEX Odyssey Marine Exploration, Inc.	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%

Financials

Frequently Asked Questions

Can I hold both OMEX and OII in my portfolio?

OMEX and OII have a correlation of 0.11, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, OMEX or OII?

OMEX has higher volatility (17.98%) compared to OII (13.14%). In terms of maximum drawdown, OMEX dropped -99.70% vs OII's -97.37%.

Which has better risk-adjusted returns?

OII currently has the higher Sharpe Ratio (1.64 vs -0.23), meaning it's delivered slightly more return per unit of risk over the trailing 12 months. However, this ranking shifts over time - use the Risk/Return Score above for a more comprehensive view that combines Sharpe, Sortino, and other measures used by quantitative funds.