NGS vs. BLBD

Last updated Apr 1, 2026

Compare and contrast key facts about Natural Gas Services Group, Inc. (NGS) and Blue Bird Corporation (BLBD).

Performance

NGS vs. BLBD - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Natural Gas Services Group, Inc. (NGS) and Blue Bird Corporation (BLBD). The values are adjusted to include any dividend payments, if applicable.

NGS vs. BLBD - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
NGS Natural Gas Services Group, Inc.	12.49%	26.53%	66.67%	40.31%	9.46%	10.44%	-22.68%	-25.43%	-37.25%	-18.51%
BLBD Blue Bird Corporation	20.83%	21.67%	43.29%	151.73%	-31.52%	-14.35%	-20.33%	26.00%	-8.59%	28.80%

Fundamentals

Market Cap NGS : $479.11M BLBD : $1.85B
EPS NGS : $1.57 BLBD : $3.97
PE Ratio NGS : 23.99 BLBD : 14.30
PEG Ratio NGS : 0.12 BLBD : 0.13
PS Ratio NGS : 2.77 BLBD : 1.24
PB Ratio NGS : 1.74 BLBD : 6.83
Total Revenue (TTM) NGS : $172.32M BLBD : $1.50B
Gross Profit (TTM) NGS : $100.54M BLBD : $314.43M
EBITDA (TTM) NGS : $65.79M BLBD : $188.65M

Returns By Period

In the year-to-date period, NGS achieves a 12.49% return, which is significantly lower than BLBD's 20.83% return. Over the past 10 years, NGS has underperformed BLBD with an annualized return of 6.14%, while BLBD has yielded a comparatively higher 18.06% annualized return.

NGS

• 1D: -1.20%
• 1M: -1.36%
• YTD: 12.49%
• 6M: 35.71%
• 1Y: 73.62%
• 3Y*: 54.67%
• 5Y*: 32.19%
• 10Y*: 6.14%

BLBD

• 1D: 4.36%
• 1M: -2.54%
• YTD: 20.83%
• 6M: -1.32%
• 1Y: 75.44%
• 3Y*: 40.61%
• 5Y*: 16.25%
• 10Y*: 18.06%

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

Return for Risk

NGS vs. BLBD — Risk / Return Rank

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

NGS

NGS Risk / Return Rank: 86
NGS Sharpe Ratio Rank: 88
NGS Sortino Ratio Rank: 83
NGS Omega Ratio Rank: 85
NGS Calmar Ratio Rank: 87
NGS Martin Ratio Rank: 90

BLBD

BLBD Risk / Return Rank: 87
BLBD Sharpe Ratio Rank: 90
BLBD Sortino Ratio Rank: 90
BLBD Omega Ratio Rank: 86
BLBD Calmar Ratio Rank: 87
BLBD Martin Ratio Rank: 83

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.

NGS vs. BLBD - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Natural Gas Services Group, Inc. (NGS) and Blue Bird Corporation (BLBD). 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.

	NGS	BLBD	Difference
Sharpe ratio Return per unit of total volatility	1.72	1.86	-0.14
Sortino ratio Return per unit of downside risk	2.25	2.76	-0.51
Omega ratio Gain probability vs. loss probability	1.33	1.34	-0.01
Calmar ratio Return relative to maximum drawdown	3.26	3.09	+0.17
Martin ratio Return relative to average drawdown	10.41	7.03	+3.38
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

NGS vs. BLBD - Sharpe Ratio Comparison

The current NGS Sharpe Ratio is 1.72, which is comparable to the BLBD Sharpe Ratio of 1.86. The chart below compares the historical Sharpe Ratios of NGS and BLBD, offering insights into how both investments have performed under varying market conditions. These values are calculated using daily returns over the previous 12 months.

Sharpe Ratios by Period

	NGS	BLBD	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.72	1.86	-0.14
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.73	0.29	+0.45
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.13	0.36	-0.22
Sharpe Ratio (All Time) Calculated using the full available price history	0.19	0.34	-0.14

Correlation

The correlation between NGS and BLBD is 0.22, which is considered to be low. This implies their price changes are not closely related. A low correlation is generally favorable for portfolio diversification, as it helps to reduce overall risk by spreading it across multiple assets with different performance patterns.

Dividends

NGS vs. BLBD - Dividend Comparison

NGS's dividend yield for the trailing twelve months is around 0.85%, while BLBD has not paid dividends to shareholders.

	TTM	2025
NGS Natural Gas Services Group, Inc.	0.85%	0.62%
BLBD Blue Bird Corporation	0.00%	0.00%

Drawdowns

NGS vs. BLBD - Drawdown Comparison

The maximum NGS drawdown since its inception was -89.59%, which is greater than BLBD's maximum drawdown of -74.16%. Use the drawdown chart below to compare losses from any high point for NGS and BLBD.

Drawdown Indicators

	NGS	BLBD	Difference
Max Drawdown Largest peak-to-trough decline	-89.59%	-74.16%	-15.43%
Max Drawdown (1Y) Largest decline over 1 year	-23.09%	-23.45%	+0.36%
Max Drawdown (5Y) Largest decline over 5 years	-40.89%	-74.16%	+33.27%
Max Drawdown (10Y) Largest decline over 10 years	-87.91%	-74.16%	-13.75%
Current Drawdown Current decline from peak	-5.22%	-8.89%	+3.67%
Average Drawdown Average peak-to-trough decline	-47.82%	-20.88%	-26.94%
Ulcer Index Depth and duration of drawdowns from previous peaks	7.24%	10.31%	-3.07%

Volatility

NGS vs. BLBD - Volatility Comparison

Natural Gas Services Group, Inc. (NGS) has a higher volatility of 11.01% compared to Blue Bird Corporation (BLBD) at 10.12%. This indicates that NGS's price experiences larger fluctuations and is considered to be riskier than BLBD based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	NGS	BLBD	Difference
Volatility (1M) Calculated over the trailing 1-month period	11.01%	10.12%	+0.89%
Volatility (6M) Calculated over the trailing 6-month period	23.26%	27.65%	-4.39%
Volatility (1Y) Calculated over the trailing 1-year period	43.04%	40.82%	+2.22%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	44.07%	56.67%	-12.60%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	46.38%	50.91%	-4.53%

Financials

NGS vs. BLBD - Profitability Comparison

The chart below illustrates the profitability comparison between Natural Gas Services Group, Inc. and Blue Bird Corporation over time, highlighting three key metrics: Gross Profit Margin, Operating Margin, and Net Profit Margin.

NGS - Gross Margin

Gross margin is calculated as gross profit divided by revenue. For the three months ending on Apr 2026, Natural Gas Services Group, Inc. reported a gross profit of 35.20M and revenue of 46.15M. Therefore, the gross margin over that period was 76.3%.

BLBD - Gross Margin

Gross margin is calculated as gross profit divided by revenue. For the three months ending on Apr 2026, Blue Bird Corporation reported a gross profit of 71.23M and revenue of 333.08M. Therefore, the gross margin over that period was 21.4%.

NGS - Operating Margin

Operating margin is calculated as operating income divided by revenue. For the three months ending on Apr 2026, Natural Gas Services Group, Inc. reported an operating income of 7.11M and revenue of 46.15M, resulting in an operating margin of 15.4%.

BLBD - Operating Margin

Operating margin is calculated as operating income divided by revenue. For the three months ending on Apr 2026, Blue Bird Corporation reported an operating income of 37.68M and revenue of 333.08M, resulting in an operating margin of 11.3%.

NGS - Net Margin

Net margin is calculated as net income divided by revenue. For the three months ending on Apr 2026, Natural Gas Services Group, Inc. reported a net income of 4.10M and revenue of 46.15M, resulting in a net margin of 8.9%.

BLBD - Net Margin

Net margin is calculated as net income divided by revenue. For the three months ending on Apr 2026, Blue Bird Corporation reported a net income of 30.76M and revenue of 333.08M, resulting in a net margin of 9.2%.