Stock fact sheet · data as of
Natural Gas Services Group, Inc. (NGS): fair value, margin of safety and Wheel Score
Ticker symbol NGS · Energy · Oil & Gas Equipment & Services · United States · Blend
Is NGS undervalued?
At 28.95 (close of 5 Nov 2026), NGS trades 33% below the GLS average fair value of 43.02. That average comes from 7 models run on the latest filings, and 4 of them land above the current price. Margins of safety over 30% are the exception rather than the rule across the ~7,400 stocks we value each night, so the number earns Natural Gas Services Group, Inc. the full Value points in the Wheel Score - and a closer look at what the market is pricing in.
The 7 models disagree widely: DDM gives 7.65 while GLS Growth gives 99.00. A spread that wide means the average is sensitive to which methods you trust; the model table below shows where each one lands, and the Quote page lets you switch any of them off.
Ranked against every other company we cover, neither cheapness nor growth clearly wins for NGS, so the nightly engine files it under Blend (value score 56, growth score 72, out of 100).
Nine valuation models for NGS
Each model turns the latest filed numbers into a value per share; the GLS fair value is the simple average of the ones that produce a positive number. The last two rows are shown for reference and never enter the average. The Quote page lets you switch any model off and add your own margin of safety.
| Model | Value | vs price | What it measures |
|---|---|---|---|
| DCF | - | - | Present value of the projected free cash flows, discounted at the cost of capital; no value tonight |
| Graham Number | 29.09 | +0% | The most a defensive investor pays for the earnings and book value per share |
| Graham Growth | 92.50 | +220% | Graham's growth formula: EPS × (8.5 + 2 × growth), adjusted for bond yields |
| Lynch | 40.43 | +40% | EPS × the earnings growth rate (PEG of 1), growth capped at 25% |
| GLS Growth | 99.00 | +242% | EPS compounded ten years at the blended growth rate, discounted back at 15% a year |
| 10 Cap | 14.54 | -50% | Owner's earnings (operating cash flow less maintenance capex) capitalised at 10% |
| Payback Time | - | - | Eight years of compounded free cash flow: the price at which the business pays for itself; no value tonight |
| DDM | 7.65 | -74% | Dividend discount model: next year's dividend ÷ (10% − 3% growth); needs a dividend |
| EPV | 17.97 | -38% | Earnings power value: current EPS capitalised at 9% with no growth |
| Zombie (liquidation) | -19.77 | -168% | Current assets less all liabilities, per share: the balance-sheet floor. Not in the average |
| Wall St target | 54.00 | +87% | Analysts' average 12-month price target. Not in the average |
Quality and financial health
Financial health is average - NGS passes 6 of the nine Piotroski tests, which passes the "Piotroski 6 or more" Wheel Trade Filter. The Financials tab on the Quote page shows which tests fail. The GLS Moat score is low at 4.3 out of 10: returns on capital, margins or the balance sheet have not shown a lasting edge yet - often a young company, a thin-margin business or one that has only recently turned profitable.
Returns on capital are thin or negative - ROIC 3.9%, ROE 7.3%, ROA 3.4% - with debt at 0.84 times equity and negative free cash flow.
The dividend yield is 1.80% at a payout ratio of 23%; for a wheel trader holding assigned shares the dividend adds to the covered-call premium, and the ex-dividend date is worth knowing before a call is sold. Revenue comes mainly from Aftermarket Services 34%, Product Sales 33%, Parts 21% (quarter Q2 FY2026).
Institutional ownership scores 10/10, insider activity 1/10 and Congressional trading 5/10 on the GLS smart-money scales.
| Piotroski F-score | 6 / 9 | ROIC | 3.9% |
|---|---|---|---|
| GLS Moat | 4.3 / 10 | ROE | 7.3% |
| Debt / equity | 0.84 | ROA | 3.4% |
| Free-cash-flow yield | -8.4% | Payout ratio | 23% |
| Institutions | 10 / 10 | Insiders · Congress | 1 · 5 / 10 |
Wheel Score 43: Weak
NGS scores 43 out of 100 on the Wheel Score, in the Weak band (under 50): it fails filter 1, options that actually trade - options too quiet (514 open interest, 67 a day); and filter 5, can repay its debt - 3.7 years to repay its debt (over 3); and filter 6, no serious red flags - Red Flags score 55 (under 60); and filter 8, big enough - market cap $373M (under $1.0B), and the parts are thin too - value strong, premium strong, moat fair, health good, red flags weak, option trading weak, stability fair. The score is not a judgement on the company; it says the price, quality and premium do not line up for selling puts on it today.
Implied volatility is 47% on the near-the-money contracts 20-60 days out - inside the 35-60% sweet spot the Wheel Score rewards most: enough premium to be worth selling, not so much that the risk is unpaid. Chain open interest is thin - 514 contracts across every expiry - so fills at a fair price are not guaranteed; a 30-45-day put may not exist at a usable strike.
Volume runs at 160k shares a day on a market cap of $373M, with a beta of 0.45 - a low beta, so day-to-day moves are smaller than the market's; the Stability part of the Wheel Score rates that fair.
| Filter | Wheel Trade Filter | Result | Detail |
|---|---|---|---|
| 1 | Options that actually trade | Fails | options too quiet (514 open interest, 67 a day) |
| 2 | A real business, not a gamble | Passes | Profitable over the last twelve months - not a speculative stock, fund or note |
| 3 | Below fair value | Passes | Trading below the nine-model average fair value (margin of safety above 0) |
| 4 | Financially healthy | Passes | Piotroski F-score 6 or more out of 9 (a company with no score on file passes) |
| 5 | Can repay its debt | Fails | 3.7 years to repay its debt (over 3) |
| 6 | No serious red flags | Fails | Red Flags score 55 (under 60) |
| 7 | A premium worth selling | Passes | Implied volatility 25-80% (enough premium, not a lottery ticket) |
| 8 | Big enough | Fails | market cap $373M (under $1.0B) |
| 9 | Not a penny stock | Passes | Share price $5 or more |
| How it ranks | Rating | From | |
|---|---|---|---|
| Value | Strong | 33% below fair value | |
| Premium | Strong | implied volatility 47% | |
| Moat | Fair | moat 4.3/10 | |
| Health | Good | Piotroski 6/9 | |
| Red Flags | Weak | Red Flags score 55/100 | |
| Option trading | Weak | 67 contracts a day, 514 open interest | |
| Stability | Fair | beta 0.45, $373M company |
The Wheel Score ranks ~7,400 US stocks for selling cash-secured puts and covered calls: a stock must pass all 9 Wheel Trade Filters to score 70, and the score then ranks the ones that pass; the Sunday Scan is the top 10. It is updated nightly and is not a recommendation. How the Wheel Score works · the walkthrough lesson shows how it fits into a trade, start to finish.
Upcoming events
Natural Gas Services Group, Inc. reports earnings on 9 Nov 2026 (after the close) - inside the 14-day window the Sunday Scan avoids, because a put sold now would carry the report's gap risk.
Earnings, dividend, IPO, split and economic calendars for the whole market, filterable to your watchlists.
Similar stocks in Oil & Gas Equipment & Services
The 12 companies below are the closest to Natural Gas Services Group, Inc. by market cap within the Oil & Gas Equipment & Services industry, each with its own fact sheet; the Compare page puts up to eight of them side by side.
| Stock | Close | Fair value | MoS | Wheel | Mkt cap |
|---|---|---|---|---|---|
| RNGR Ranger Energy Services, Inc. | 13.57 | 24.75 | +45% | 31Weak | $318M |
| CLB Core Laboratories N.V. | 9.65 | 10.54 | +8% | 35Weak | $442M |
| NOA North American Construction Group Ltd. | 11.43 | 20.43 | +44% | 38Weak | $308M |
| OIS Oil States International, Inc. | 8.53 | 8.37 | -2% | 27Weak | $510M |
| HMH HMH Holding Inc. Class A Common Stock | 15.40 | 131.05 | +88% | 31No options | $688M |
| ACDC ProFrac Holding Corp. | 3.97 | 8.55 | +54% | 28Weak | $723M |
| SND Smart Sand, Inc. | 4.37 | 10.99 | +60% | 37Weak | $185M |
| PUMP ProPetro Holding Corp. | 6.42 | 0.8458 | -659% | 23Weak | $789M |
| FET Forum Energy Technologies, Inc. | 73.68 | 118.67 | +38% | 49Weak | $833M |
| OMSE OMS Energy Technologies Inc. | 3.94 | 43.89 | +91% | 36No options | $167M |
| AESI Atlas Energy Solutions Inc. | 6.73 | 5.56 | -21% | 21Weak | $841M |
| BOOM DMC Global Inc. | 7.90 | 19.18 | +59% | 42Weak | $162M |
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Start free See the Sunday ScanQuestions about NGS
Is NGS undervalued right now?
By the GLS models, yes: at 28.95 the stock is 33% below the average fair value of 43.02 (data as of 5 Nov 2026). Whether the discount is deserved is the question to research next.
What is the Wheel Score of NGS and what does it mean?
NGS scores 43 out of 100 (Weak) - it fails Wheel Trade Filters 1, 5, 6, 8. The Wheel Score ranks stocks for the wheel strategy - selling cash-secured puts, then covered calls if assigned - in two parts: the 9 pass/fail Wheel Trade Filters (busy options, a real business, below fair value, Piotroski 6 or more, debt it can repay, a Red Flags score of 60 or more, implied volatility of 25-80%, a $1 billion company, $5 a share) and a ranking of how strongly a stock passes on value, premium, moat, health, red flags, option trading and stability. A stock that fails any filter stays under 70; 70-84 is Good, 85 and above is Prime. The Sunday Scan is the top 10 that pass, sorted by Wheel Score.
What is the GLS fair value for NGS?
43.02 per share as of 5 Nov 2026 - the simple average of the 7 valuation models (out of nine: DCF, Graham Number, Graham Growth, Lynch, GLS Growth, 10 Cap, Payback Time, DDM and EPV) that produced a positive value. The models run every night on the latest filings; the Quote page lets you switch any of them off and add a margin of safety of your own.
When does Natural Gas Services Group, Inc. report earnings next?
The next earnings report is due on 9 Nov 2026 (after the close), 4 days from the data date of 5 Nov 2026. The Calendars page lists every upcoming report with its time of day.
Does NGS have listed options, and how liquid are they?
Yes. The nightly snapshot found 50 listed contracts with 514 open interest across all expiries and implied volatility of 47% on the near-the-money contracts. The Options scanner lists the cash-secured put and covered call set-ups with premium and annualised yield worked out.