ECO vs. SEI

Last updated Aug 1, 2026

ECO (Okeanis Eco Tankers Corp) and SEI (Solaris Energy Infrastructure, Inc) are both stocks. ECO operates in Marine Shipping (Industrials), while SEI operates in Oil & Gas Equipment & Services (Energy). Over the past year, ECO returned 185.56% vs 58.96% for SEI. Their 0.11 correlation means their historical movements had little consistent relationship.

Performance

ECO vs. SEI - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Okeanis Eco Tankers Corp (ECO) and Solaris Energy Infrastructure, Inc (SEI). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, ECO achieves a 90.59% return, which is significantly higher than SEI's 12.30% return.

ECO

• 1D: 0.79%
• 1M: 20.80%
• 6M: 59.28%
• YTD: 90.59%
• 1Y: 185.56%
• 3Y*: —
• 5Y*: —
• 10Y*: —
• ALL TIME*: 48.73%

SEI

• 1D: 0.25%
• 1M: -29.98%
• 6M: -6.46%
• YTD: 12.30%
• 1Y: 58.96%
• 3Y*: 73.99%
• 5Y*: 47.96%
• 10Y*: —
• ALL TIME*: 20.73%

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

Liquidity Comparison

Position	Avg. Volume Value (2W)	Avg. Volume Value (1M)	Avg. Volume Value (3M)
ECO Okeanis Eco Tankers Corp	$18.81M	$22.75M	$24.38M
SEI Solaris Energy Infrastructure, Inc	$200.05M	$228.81M	$190.63M

ECO vs. SEI - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023
ECO Okeanis Eco Tankers Corp	90.59%	71.94%	-11.70%	-1.25%
SEI Solaris Energy Infrastructure, Inc	12.30%	62.29%	277.66%	-2.81%

Correlation

The correlation between ECO and SEI is 0.01, meaning there was essentially no consistent relationship between their historical price movements. Each responded to its own set of market drivers.

	Correlation
Correlation (1Y) Focuses on recent behavior, but can change the most.	0.01
Correlation (All Time) Calculated using the full available price history since Dec 8, 2023	0.11

Fundamentals

Market Cap ECO : $1.97B SEI : $3.15B
EPS ECO : $5.73 SEI : $0.97
PE Ratio ECO : 10.53 SEI : 52.86
PS Ratio ECO : 4.35 SEI : 3.54
PB Ratio ECO : 3.17 SEI : 3.26
Total Revenue (TTM) ECO : $481.57M SEI : $692.11M
Gross Profit (TTM) ECO : $274.61M SEI : $235.28M
EBITDA (TTM) ECO : $284.05M SEI : $249.65M

Return for Risk

ECO vs. SEI — Risk / Return Rank

Compare historical risk-adjusted metric ranks over the past 12 months.

ECO

ECO Risk / Return Rank: 98
ECO Sharpe Ratio Rank: 99
ECO Sortino Ratio Rank: 98
ECO Omega Ratio Rank: 97
ECO Calmar Ratio Rank: 99
ECO Martin Ratio Rank: 99

SEI

SEI Risk / Return Rank: 71
SEI Sharpe Ratio Rank: 70
SEI Sortino Ratio Rank: 70
SEI Omega Ratio Rank: 68
SEI Calmar Ratio Rank: 70
SEI Martin Ratio Rank: 78

The rank (0–100) uses a weighted average of the Sharpe, Sortino, Omega, Calmar, and Martin percentile ranks for the trailing 12 months. Higher means stronger historical risk-adjusted performance within the peer group.

ECO vs. SEI - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Okeanis Eco Tankers Corp (ECO) and Solaris Energy Infrastructure, Inc (SEI). 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.

	ECO	SEI	Difference
Sharpe ratio: Return per unit of total volatility	4.51	0.76	+3.74
Sortino ratio: Return per unit of downside risk	4.57	1.49	+3.08
Omega ratio: Gain probability vs. loss probability	1.55	1.18	+0.38
Calmar ratio: Return relative to maximum drawdown	10.57	1.24	+9.33
Martin ratio: Return relative to average drawdown	29.65	4.72	+24.93

ECO vs. SEI - Sharpe Ratio Comparison

The current ECO Sharpe Ratio is 4.51, which is higher than the SEI Sharpe Ratio of 0.76. The chart below compares the historical Sharpe Ratios of ECO and SEI, 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

ECO vs. SEI - Drawdown Comparison

The maximum ECO drawdown since its inception was -46.15%, smaller than the maximum SEI drawdown of -79.49%. Use the drawdown chart below to compare losses from any high point for ECO and SEI.

Drawdown Indicators

	ECO	SEI	Difference
Max Drawdown Largest peak-to-trough decline	-46.15%	-79.49%	+33.34%
Max Drawdown (1Y) Largest decline over 1 year	-17.66%	-47.61%	+29.95%
Max Drawdown (3Y) Largest decline over 3 years	—	-55.37%	—
Max Drawdown (5Y) Largest decline over 5 years	—	-55.37%	—
Current Drawdown Current decline from peak	0.00%	-37.97%	+37.97%
Average Drawdown Average peak-to-trough decline	-14.58%	-38.32%	+23.74%
Ulcer Index Depth and duration of drawdowns from previous peaks	6.29%	12.78%	-6.49%

Volatility

ECO vs. SEI - Volatility Comparison

The current volatility for Okeanis Eco Tankers Corp (ECO) is 13.44%, while Solaris Energy Infrastructure, Inc (SEI) has a volatility of 30.50%. This indicates that ECO experiences smaller price fluctuations and is considered to be less risky than SEI based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	ECO	SEI	Difference
Volatility (1M) Calculated over the trailing 1-month period	13.44%	30.50%	-17.06%
Volatility (6M) Calculated over the trailing 6-month period	31.16%	57.43%	-26.27%
Volatility (1Y) Calculated over the trailing 1-year period	41.51%	77.63%	-36.12%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	42.20%	68.06%	-25.86%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	42.20%	62.88%	-20.68%

Dividends

ECO vs. SEI - Dividend Comparison

ECO's dividend yield for the trailing twelve months is around 8.29%, more than SEI's 0.93% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018
ECO Okeanis Eco Tankers Corp	8.29%	6.26%	15.57%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
SEI Solaris Energy Infrastructure, Inc	0.93%	1.04%	1.67%	5.65%	4.23%	6.41%	5.16%	2.89%	0.83%

Financials

ECO vs. SEI - Profitability Comparison

The chart below illustrates the profitability comparison between Okeanis Eco Tankers Corp and Solaris Energy Infrastructure, Inc over time, highlighting three key metrics: Gross Profit Margin, Operating Margin, and Net Profit Margin.

ECO - Gross Margin

Gross margin is calculated as gross profit divided by revenue. For the three months ending on Aug 2026, Okeanis Eco Tankers Corp reported a gross profit of 109.68M and revenue of 170.17M. Therefore, the gross margin over that period was 64.5%.

SEI - Gross Margin

Gross margin is calculated as gross profit divided by revenue. For the three months ending on Aug 2026, Solaris Energy Infrastructure, Inc reported a gross profit of 72.72M and revenue of 196.24M. Therefore, the gross margin over that period was 37.1%.

ECO - Operating Margin

Operating margin is calculated as operating income divided by revenue. For the three months ending on Aug 2026, Okeanis Eco Tankers Corp reported an operating income of 98.06M and revenue of 170.17M, resulting in an operating margin of 57.6%.

SEI - Operating Margin

Operating margin is calculated as operating income divided by revenue. For the three months ending on Aug 2026, Solaris Energy Infrastructure, Inc reported an operating income of 50.56M and revenue of 196.24M, resulting in an operating margin of 25.8%.

ECO - Net Margin

Net margin is calculated as net income divided by revenue. For the three months ending on Aug 2026, Okeanis Eco Tankers Corp reported a net income of 88.32M and revenue of 170.17M, resulting in a net margin of 51.9%.

SEI - Net Margin

Net margin is calculated as net income divided by revenue. For the three months ending on Aug 2026, Solaris Energy Infrastructure, Inc reported a net income of 21.44M and revenue of 196.24M, resulting in a net margin of 10.9%.

Frequently Asked Questions

Can I hold both ECO and SEI in my portfolio?

ECO and SEI have a correlation of 0.01, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, ECO or SEI?

SEI has higher volatility (30.50%) compared to ECO (13.44%). In terms of maximum drawdown, ECO dropped -46.15% vs SEI's -79.49%.

Which has better risk-adjusted returns?

ECO currently has the higher Sharpe Ratio (4.51 vs 0.76), 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.