ECO vs. NSSC

Last updated Jun 3, 2026

ECO (Okeanis Eco Tankers Corp) and NSSC (Napco Security Technologies, Inc.) are both stocks. Both are in the Industrials sector — ECO in Marine Shipping, NSSC in Security & Protection Services. Over the past year, ECO returned 135.11% vs 30.92% for NSSC. At a 0.10 correlation, their price movements are largely independent.

Performance

ECO vs. NSSC - Performance Comparison

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

Returns By Period

In the year-to-date period, ECO achieves a 52.20% return, which is significantly higher than NSSC's -12.88% return.

ECO

• 1D: -0.86%
• 1M: -9.18%
• YTD: 52.20%
• 6M: 42.40%
• 1Y: 135.11%
• 3Y*: —
• 5Y*: —
• 10Y*: —

NSSC

• 1D: 2.64%
• 1M: -22.52%
• YTD: -12.88%
• 6M: -8.61%
• 1Y: 30.92%
• 3Y*: 0.99%
• 5Y*: 18.02%
• 10Y*: 27.59%

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

ECO vs. NSSC - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023
ECO Okeanis Eco Tankers Corp	52.20%	71.94%	-11.70%	-1.51%
NSSC Napco Security Technologies, Inc.	-12.88%	19.22%	4.97%	6.66%

Correlation

The correlation between ECO and NSSC is 0.10, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.10
Correlation (All Time) Calculated using the full available price history since Dec 11, 2023	0.10

Fundamentals

Market Cap ECO : $1.84B NSSC : $1.29B
EPS ECO : $5.83 NSSC : $1.03
PE Ratio ECO : 8.26 NSSC : 35.29
PEG Ratio ECO : 0.78 NSSC : 1.27
PS Ratio ECO : 3.41 NSSC : 6.60
PB Ratio ECO : 2.54 NSSC : 7.27
Total Revenue (TTM) ECO : $481.57M NSSC : $197.23M
Gross Profit (TTM) ECO : $274.61M NSSC : $112.37M
EBITDA (TTM) ECO : $284.05M NSSC : $42.52M

Return for Risk

ECO vs. NSSC — Risk / Return Rank

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

ECO

ECO Risk / Return Rank: 94
ECO Sharpe Ratio Rank: 95
ECO Sortino Ratio Rank: 94
ECO Omega Ratio Rank: 90
ECO Calmar Ratio Rank: 95
ECO Martin Ratio Rank: 96

NSSC

NSSC Risk / Return Rank: 64
NSSC Sharpe Ratio Rank: 64
NSSC Sortino Ratio Rank: 59
NSSC Omega Ratio Rank: 60
NSSC Calmar Ratio Rank: 65
NSSC Martin Ratio Rank: 69

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.

ECO vs. NSSC - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Okeanis Eco Tankers Corp (ECO) and Napco Security Technologies, Inc. (NSSC). 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.

	ECO	NSSC	Difference
Sharpe ratio Return per unit of total volatility	3.35	0.74	+2.61
Sortino ratio Return per unit of downside risk	3.88	1.25	+2.63
Omega ratio Gain probability vs. loss probability	1.44	1.17	+0.27
Calmar ratio Return relative to maximum drawdown	7.61	1.27	+6.35
Martin ratio Return relative to average drawdown	22.54	3.73	+18.80
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

ECO vs. NSSC - Sharpe Ratio Comparison

The current ECO Sharpe Ratio is 3.35, which is higher than the NSSC Sharpe Ratio of 0.74. The chart below compares the historical Sharpe Ratios of ECO and NSSC, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Sharpe Ratios by Period

	ECO	NSSC	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	3.35	0.74	+2.61
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	—	0.35	—
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	0.56	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.95	0.20	+0.74

Drawdowns

ECO vs. NSSC - Drawdown Comparison

The maximum ECO drawdown since its inception was -46.15%, smaller than the maximum NSSC drawdown of -93.20%. Use the drawdown chart below to compare losses from any high point for ECO and NSSC.

Drawdown Indicators

	ECO	NSSC	Difference
Max Drawdown Largest peak-to-trough decline	-46.15%	-93.20%	+47.05%
Max Drawdown (1Y) Largest decline over 1 year	-17.66%	-25.06%	+7.40%
Max Drawdown (3Y) Largest decline over 3 years	—	-65.43%	—
Max Drawdown (5Y) Largest decline over 5 years	—	-65.43%	—
Max Drawdown (10Y) Largest decline over 10 years	—	-65.43%	—
Current Drawdown Current decline from peak	-12.09%	-35.90%	+23.81%
Average Drawdown Average peak-to-trough decline	-15.22%	-38.20%	+22.98%
Ulcer Index Depth and duration of drawdowns from previous peaks	5.97%	8.50%	-2.53%

Volatility

ECO vs. NSSC - Volatility Comparison

The current volatility for Okeanis Eco Tankers Corp (ECO) is 12.26%, while Napco Security Technologies, Inc. (NSSC) has a volatility of 20.18%. This indicates that ECO experiences smaller price fluctuations and is considered to be less risky than NSSC based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	ECO	NSSC	Difference
Volatility (1M) Calculated over the trailing 1-month period	12.26%	20.18%	-7.92%
Volatility (6M) Calculated over the trailing 6-month period	29.98%	33.38%	-3.40%
Volatility (1Y) Calculated over the trailing 1-year period	40.57%	42.08%	-1.51%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	42.02%	51.08%	-9.06%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	42.02%	49.57%	-7.55%

Dividends

ECO vs. NSSC - Dividend Comparison

ECO's dividend yield for the trailing twelve months is around 11.04%, more than NSSC's 1.57% yield.

Position	TTM	2025	2024	2023
ECO Okeanis Eco Tankers Corp	10.38%	6.26%	15.57%	0.00%
NSSC Napco Security Technologies, Inc.	1.57%	1.31%	1.27%	0.65%

Financials

ECO vs. NSSC - Profitability Comparison

The chart below illustrates the profitability comparison between Okeanis Eco Tankers Corp and Napco Security Technologies, 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 Jun 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%.

NSSC - Gross Margin

Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jun 2026, Napco Security Technologies, Inc. reported a gross profit of 29.49M and revenue of 49.17M. Therefore, the gross margin over that period was 60.0%.

ECO - Operating Margin

Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 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%.

NSSC - Operating Margin

Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 2026, Napco Security Technologies, Inc. reported an operating income of -1.19M and revenue of 49.17M, resulting in an operating margin of -2.4%.

ECO - Net Margin

Net margin is calculated as net income divided by revenue. For the three months ending on Jun 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%.

NSSC - Net Margin

Net margin is calculated as net income divided by revenue. For the three months ending on Jun 2026, Napco Security Technologies, Inc. reported a net income of -408.00K and revenue of 49.17M, resulting in a net margin of -0.8%.

Frequently Asked Questions

Can I hold both ECO and NSSC in my portfolio?

ECO and NSSC have a correlation of 0.10, 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 NSSC?

NSSC has higher volatility (20.18%) compared to ECO (12.26%). In terms of maximum drawdown, ECO dropped -46.15% vs NSSC's -93.20%.

Which has better risk-adjusted returns?

ECO currently has the higher Sharpe Ratio (3.35 vs 0.74), 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.