GASS vs. NOV
GASS (StealthGas Inc.) and NOV (National Oilwell Varco, Inc.) are both stocks. GASS operates in Marine Shipping (Industrials), while NOV operates in Oil & Gas Equipment & Services (Energy). Over the past 10 years, GASS returned 12.98%/yr vs -3.52%/yr for NOV. At a 0.27 correlation, their price movements are largely independent.
Performance
GASS vs. NOV - Performance Comparison
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Returns By Period
The year-to-date returns for both stocks are quite close, with GASS having a 37.46% return and NOV slightly lower at 37.04%. Over the past 10 years, GASS has outperformed NOV with an annualized return of 12.98%, while NOV has yielded a comparatively lower -3.52% annualized return.
GASS
- 1D
- 4.32%
- 1M
- -4.17%
- YTD
- 37.46%
- 6M
- 34.40%
- 1Y
- 43.39%
- 3Y*
- 46.17%
- 5Y*
- 36.28%
- 10Y*
- 12.98%
NOV
- 1D
- 0.48%
- 1M
- 4.65%
- YTD
- 37.04%
- 6M
- 30.69%
- 1Y
- 58.42%
- 3Y*
- 14.65%
- 5Y*
- 6.53%
- 10Y*
- -3.52%
GASS vs. NOV - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
GASS StealthGas Inc. | 37.46% | 24.25% | -12.54% | 141.04% | 27.01% | 34.27% | -31.49% | 24.28% | -36.70% | 28.99% |
NOV National Oilwell Varco, Inc. | 37.04% | 11.30% | -26.81% | -1.83% | 55.72% | -0.89% | -44.93% | -1.69% | -28.28% | -3.23% |
Correlation
The correlation between GASS and NOV is 0.20, which is low. Their price movements are largely independent, making them effective diversification partners.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | 0.20 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.28 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.32 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.28 |
Correlation (All Time) Calculated using the full available price history since Oct 6, 2005 | 0.27 |
The correlation between GASS and NOV shifts across timeframes, from 0.20 (1 year) to 0.32 (5 years), reflecting how their relationship changes across market environments.
Fundamentals
GASS:
$351.82M
NOV:
$7.69B
GASS:
$1.73
NOV:
$0.25
GASS:
5.58
NOV:
85.80
GASS:
0.08
NOV:
1.05
GASS:
2.00
NOV:
0.90
GASS:
0.50
NOV:
1.23
GASS:
$173.98M
NOV:
$8.69B
GASS:
$66.19M
NOV:
$1.70B
GASS:
$81.20M
NOV:
$633.00M
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Return for Risk
GASS vs. NOV — Risk / Return Rank
GASS
NOV
GASS vs. NOV - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for StealthGas Inc. (GASS) and National Oilwell Varco, Inc. (NOV). 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.
| GASS | NOV | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -0.10 | ||
| Sortino ratioReturn per unit of downside risk | +0.10 | ||
| Omega ratioGain probability vs. loss probability | 1.26 | 1.28 | -0.02 |
| Calmar ratioReturn relative to maximum drawdown | 2.42 | 3.91 | -1.49 |
| Martin ratioReturn relative to average drawdown | 5.14 | 10.14 | -4.99 |
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Drawdowns
GASS vs. NOV - Drawdown Comparison
The maximum GASS drawdown since its inception was -89.82%, roughly equal to the maximum NOV drawdown of -89.77%. Use the drawdown chart below to compare losses from any high point for GASS and NOV.
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Drawdown Indicators
| GASS | NOV | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -89.82% | -89.77% | -0.05% |
Max Drawdown (1Y)Largest decline over 1 year | -20.76% | -16.10% | -4.66% |
Max Drawdown (3Y)Largest decline over 3 years | -44.34% | -47.15% | +2.81% |
Max Drawdown (5Y)Largest decline over 5 years | -44.34% | -53.70% | +9.36% |
Max Drawdown (10Y)Largest decline over 10 years | -63.11% | -83.26% | +20.15% |
Current DrawdownCurrent decline from peak | -15.09% | -70.35% | +55.26% |
Average DrawdownAverage peak-to-trough decline | -57.89% | -45.20% | -12.69% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 9.76% | 6.20% | +3.56% |
Volatility
GASS vs. NOV - Volatility Comparison
StealthGas Inc. (GASS) and National Oilwell Varco, Inc. (NOV) have volatilities of 11.02% and 11.51%, respectively, indicating that both stocks experience similar levels of price fluctuations. This suggests that the risk associated with both stocks, as measured by volatility, is nearly the same. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| GASS | NOV | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 11.02% | 11.51% | -0.49% |
Volatility (6M)Calculated over the trailing 6-month period | 25.57% | 26.13% | -0.56% |
Volatility (1Y)Calculated over the trailing 1-year period | 32.48% | 38.20% | -5.72% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 49.45% | 42.45% | +7.00% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 47.52% | 47.27% | +0.25% |
Dividends
GASS vs. NOV - Dividend Comparison
GASS has not paid dividends to shareholders, while NOV's dividend yield for the trailing twelve months is around 2.34%.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
GASS StealthGas Inc. | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 44.43% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% |
NOV National Oilwell Varco, Inc. | 1.99% | 3.26% | 1.88% | 0.99% | 0.96% | 0.37% | 0.36% | 0.80% | 0.78% | 0.56% | 1.63% | 5.49% |
Financials
GASS vs. NOV - Financials Comparison
This section allows you to compare key financial metrics between StealthGas Inc. and National Oilwell Varco, Inc.. You can select fields from income statements, balance sheets, and cash flow statements to easily visualize and compare the financial health of both companies.
Total Revenue: Total amount of money received from sales and other business activities
GASS vs. NOV - Profitability Comparison
GASS - Gross Margin
Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jun 2026, StealthGas Inc. reported a gross profit of 14.69M and revenue of 42.84M. Therefore, the gross margin over that period was 34.3%.
NOV - Gross Margin
Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jun 2026, National Oilwell Varco, Inc. reported a gross profit of 379.00M and revenue of 2.05B. Therefore, the gross margin over that period was 18.5%.
GASS - Operating Margin
Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 2026, StealthGas Inc. reported an operating income of 11.63M and revenue of 42.84M, resulting in an operating margin of 27.1%.
NOV - Operating Margin
Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 2026, National Oilwell Varco, Inc. reported an operating income of 47.00M and revenue of 2.05B, resulting in an operating margin of 2.3%.
GASS - Net Margin
Net margin is calculated as net income divided by revenue. For the three months ending on Jun 2026, StealthGas Inc. reported a net income of 15.93M and revenue of 42.84M, resulting in a net margin of 37.2%.
NOV - Net Margin
Net margin is calculated as net income divided by revenue. For the three months ending on Jun 2026, National Oilwell Varco, Inc. reported a net income of 19.00M and revenue of 2.05B, resulting in a net margin of 0.9%.
Frequently Asked Questions
GASS and NOV have a correlation of 0.20, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
NOV has higher volatility (11.51%) compared to GASS (11.02%). In terms of maximum drawdown, GASS dropped -89.82% vs NOV's -89.77%.
NOV currently has the higher Sharpe Ratio (1.65 vs 1.55), 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.
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