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Side-by-side financial comparison of NATURAL GAS SERVICES GROUP INC (NGS) and Neuronetics, Inc. (STIM). Click either name above to swap in a different company.

NATURAL GAS SERVICES GROUP INC is the larger business by last-quarter revenue ($46.1M vs $41.8M, roughly 1.1× Neuronetics, Inc.). NATURAL GAS SERVICES GROUP INC runs the higher net margin — 8.9% vs -17.2%, a 26.1% gap on every dollar of revenue. On growth, Neuronetics, Inc. posted the faster year-over-year revenue change (85.7% vs 13.5%). Neuronetics, Inc. produced more free cash flow last quarter ($692.0K vs $-20.7M).

Southern Company Gas, formerly AGL Resources, is an American Fortune 500 energy services holding company headquartered in Atlanta, Georgia. The company's operations consist of natural gas distribution, wholesale services, retail operations, and midstream operations. Southern Company Gas is one of the largest natural gas distribution companies in the United States. The company serves approximately 4.5 million utility customers through its regulated distribution subsidiaries across four states....

Neuronetics is a Malvern, PA based, publicly traded company incorporated in Delaware in April 2003, that develops non-invasive treatments for psychiatric disorders that have shown resistance or lack of improvement using traditional medicine. The treatments are based upon neuromodulation technology. 

NGS vs STIM — Head-to-Head

Bigger by revenue
NGS
NGS
1.1× larger
NGS
$46.1M
$41.8M
STIM
Growing faster (revenue YoY)
STIM
STIM
+72.2% gap
STIM
85.7%
13.5%
NGS
Higher net margin
NGS
NGS
26.1% more per $
NGS
8.9%
-17.2%
STIM
More free cash flow
STIM
STIM
$21.4M more FCF
STIM
$692.0K
$-20.7M
NGS

Income Statement — Q4 FY2025 vs Q4 FY2025

Metric
NGS
NGS
STIM
STIM
Revenue
$46.1M
$41.8M
Net Profit
$4.1M
$-7.2M
Gross Margin
52.0%
Operating Margin
15.4%
-12.1%
Net Margin
8.9%
-17.2%
Revenue YoY
13.5%
85.7%
Net Profit YoY
43.2%
43.2%
EPS (diluted)
$0.32
$-0.10

Green = leading value per metric. Periods may differ when fiscal calendars don't align.

8-Quarter Revenue & Profit Trend

Side-by-side quarterly history. Quarters aligned by calendar period so offset fiscal years line up.

Revenue
NGS
NGS
STIM
STIM
Q4 25
$46.1M
$41.8M
Q3 25
$43.4M
$37.3M
Q2 25
$41.4M
$38.1M
Q1 25
$41.4M
$32.0M
Q4 24
$40.7M
$22.5M
Q3 24
$18.5M
Q2 24
$16.4M
Q1 24
$17.4M
Net Profit
NGS
NGS
STIM
STIM
Q4 25
$4.1M
$-7.2M
Q3 25
$5.8M
$-9.0M
Q2 25
$5.2M
$-10.1M
Q1 25
$4.9M
$-12.7M
Q4 24
$2.9M
$-12.7M
Q3 24
$-13.3M
Q2 24
$-9.8M
Q1 24
$-7.9M
Gross Margin
NGS
NGS
STIM
STIM
Q4 25
52.0%
Q3 25
45.9%
Q2 25
46.6%
Q1 25
49.2%
Q4 24
66.2%
Q3 24
75.6%
Q2 24
74.0%
Q1 24
75.1%
Operating Margin
NGS
NGS
STIM
STIM
Q4 25
15.4%
-12.1%
Q3 25
24.8%
-19.6%
Q2 25
24.0%
-21.1%
Q1 25
23.0%
-34.4%
Q4 24
14.9%
-51.0%
Q3 24
-41.7%
Q2 24
-51.7%
Q1 24
-39.4%
Net Margin
NGS
NGS
STIM
STIM
Q4 25
8.9%
-17.2%
Q3 25
13.3%
-24.3%
Q2 25
12.5%
-26.6%
Q1 25
11.7%
-39.6%
Q4 24
7.0%
-56.4%
Q3 24
-72.0%
Q2 24
-59.8%
Q1 24
-45.2%
EPS (diluted)
NGS
NGS
STIM
STIM
Q4 25
$0.32
$-0.10
Q3 25
$0.46
$-0.13
Q2 25
$0.41
$-0.15
Q1 25
$0.38
$-0.21
Q4 24
$0.22
$-0.34
Q3 24
$-0.44
Q2 24
$-0.33
Q1 24
$-0.27

Balance Sheet & Financial Strength

Snapshot of each company's liquidity, leverage and book value from the latest quarter.

Metric
NGS
NGS
STIM
STIM
Cash + ST InvestmentsLiquidity on hand
$28.1M
Total DebtLower is stronger
$65.8M
Stockholders' EquityBook value
$274.7M
$22.4M
Total Assets
$586.8M
$141.6M
Debt / EquityLower = less leverage
2.94×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
NGS
NGS
STIM
STIM
Q4 25
$28.1M
Q3 25
$28.0M
Q2 25
$325.0K
$11.0M
Q1 25
$2.1M
$20.2M
Q4 24
$2.1M
$18.5M
Q3 24
$20.9M
Q2 24
$42.6M
Q1 24
$47.7M
Total Debt
NGS
NGS
STIM
STIM
Q4 25
$65.8M
Q3 25
$65.7M
Q2 25
$55.5M
Q1 25
$55.3M
Q4 24
$55.2M
Q3 24
$46.0M
Q2 24
$59.8M
Q1 24
$59.4M
Stockholders' Equity
NGS
NGS
STIM
STIM
Q4 25
$274.7M
$22.4M
Q3 25
$271.4M
$27.4M
Q2 25
$266.2M
$27.1M
Q1 25
$260.3M
$35.5M
Q4 24
$255.1M
$27.7M
Q3 24
$9.4M
Q2 24
$19.4M
Q1 24
$27.7M
Total Assets
NGS
NGS
STIM
STIM
Q4 25
$586.8M
$141.6M
Q3 25
$562.3M
$145.5M
Q2 25
$525.5M
$134.7M
Q1 25
$501.7M
$142.0M
Q4 24
$492.5M
$140.9M
Q3 24
Q2 24
$96.8M
Q1 24
$103.8M
Debt / Equity
NGS
NGS
STIM
STIM
Q4 25
2.94×
Q3 25
2.40×
Q2 25
2.05×
Q1 25
1.56×
Q4 24
1.99×
Q3 24
4.90×
Q2 24
3.08×
Q1 24
2.15×

Cash Flow & Capital Efficiency

How much cash each business actually produces after reinvestment. Cash flow is harder to manipulate than net income.

Metric
NGS
NGS
STIM
STIM
Operating Cash FlowLast quarter
$13.9M
$908.0K
Free Cash FlowOCF − Capex
$-20.7M
$692.0K
FCF MarginFCF / Revenue
-44.8%
1.7%
Capex IntensityCapex / Revenue
74.9%
0.5%
Cash ConversionOCF / Net Profit
3.38×
TTM Free Cash FlowTrailing 4 quarters
$-58.6M
$-21.2M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
NGS
NGS
STIM
STIM
Q4 25
$13.9M
$908.0K
Q3 25
$16.8M
$-785.0K
Q2 25
$11.0M
$-3.5M
Q1 25
$21.3M
$-17.0M
Q4 24
$9.4M
$-8.6M
Q3 24
$-5.4M
Q2 24
$-5.0M
Q1 24
$-12.0M
Free Cash Flow
NGS
NGS
STIM
STIM
Q4 25
$-20.7M
$692.0K
Q3 25
$-25.1M
$-899.0K
Q2 25
$-14.8M
$-3.8M
Q1 25
$2.0M
$-17.2M
Q4 24
$-5.1M
$-8.7M
Q3 24
$-5.8M
Q2 24
$-5.6M
Q1 24
$-12.4M
FCF Margin
NGS
NGS
STIM
STIM
Q4 25
-44.8%
1.7%
Q3 25
-57.7%
-2.4%
Q2 25
-35.8%
-9.9%
Q1 25
4.9%
-53.8%
Q4 24
-12.6%
-38.6%
Q3 24
-31.3%
Q2 24
-34.0%
Q1 24
-71.1%
Capex Intensity
NGS
NGS
STIM
STIM
Q4 25
74.9%
0.5%
Q3 25
96.5%
0.3%
Q2 25
62.4%
0.7%
Q1 25
46.5%
0.7%
Q4 24
35.8%
0.4%
Q3 24
2.1%
Q2 24
3.7%
Q1 24
2.2%
Cash Conversion
NGS
NGS
STIM
STIM
Q4 25
3.38×
Q3 25
2.90×
Q2 25
2.12×
Q1 25
4.38×
Q4 24
3.29×
Q3 24
Q2 24
Q1 24

Financial Flow Comparison

Revenue → gross profit → operating profit → net profit for each company.

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