MNTK vs E vs CLNE Stock Comparison

Montauk Renewables, Eni Spa and Clean Energy Fuels Prices as of Oct 26, 2026 Peers: Industry group
E Eni Spa
$60.57 +10.7% 1M +64.5% 1Y
Market cap
$89.34B
P/E
17.2x
Revenue (TTM)
$98.30B
Div. yield
-0.04%
Integrated Oil and Gas Energy
10 wins

Head to Head

11 decided of 12

Eni Spa leads on 10 of the 12 questions below (Eni Spa 10, Clean Energy Fuels 1). Which ones matter depends on what you are buying for; a cheap multiple and slow growth often come together.

QuestionMNTKECLNELeader
Larger companyMarket capitalisation $317.29M $89.34B $318.27M E
Cheaper on earningsLower P/E, profitable companies only 40.0x 17.2x -3.4x E
Cheaper on forward earningsLower price / next fiscal year consensus EPS 18.0x 9.0x — E
Faster revenue growthRevenue growth, trailing twelve months +4.3% +11.2% +5.2% E
More profitableNet margin, trailing twelve months 4.2% 5.3% -21.3% E
Better return on capitalReturn on invested capital 0.3% 6.9% -4.1% E
Less leveragedLower net debt / EBITDA 3.9x 1.4x 3.3x E
Higher dividend yieldTrailing dividend yield 0.00% -0.04% 0.00% –
Better 1-year returnPrice return, last 12 months -7.3% +64.5% -52.6% E
Better 5-year returnAnnualised price return, 5 years -28.4%/yr +16.4%/yr -29.7%/yr E
Less volatileAnnualised volatility, 1 year 78.6% 27.5% 53.8% E
Higher overall scoreMean of the five percentile scores vs peers 51/100 51/100 65/100 CLNE

Percentile Scorecard

MNTKECLNE

Each axis is the mean percentile of its metrics against the company's industry group. 100 is the best in the group, 50 the middle.

Scores by Axis

AxisMNTKECLNE
Valuation 70 #4 of 11 78 #23 of 99 90 #2 of 11
Growth 20 #9 of 11 64 #36 of 97 60 #5 of 11
Profitability 75 #3 of 9 47 #51 of 96 50 #5 of 9
Financial Health 40 #7 of 11 33 #69 of 102 60 #5 of 11
Shareholder Returns – 32 #52 of 76 –
Overall 51 51 65
  • MNTK ranked among 11 companies in Renewable Fuels
  • E ranked among 103 companies in Oil and Gas Upstream
  • CLNE ranked among 11 companies in Renewable Fuels

Price Performance

Price return, split-adjusted, before dividends. Click a name to hide or show it.

Returns

PeriodMNTKECLNESPY
1 month -26.3%+10.7%-9.4% -0.8%
3 months +13.7%+19.6%-26.0% +3.5%
6 months +55.4%+12.6%-34.4% +7.0%
Year to date +29.3%+59.6%-31.0% +12.2%
1 year -7.3%+64.5%-52.6% +13.0%
3 years -77.8%+86.6%-56.8% +86.3%
3 years, per year -39.5%+23.1%-24.4% +23.1%
5 years -81.1%+113.7%-82.8% +68.6%
5 years, per year -28.4%+16.4%-29.7% +11.0%
10 years —+105.5%-66.0% +258.0%
10 years, per year —+7.5%-10.2% +13.6%

Risk

MeasureMNTKECLNESPY
Volatility, 1Y 78.6%27.5%53.8% 12.7%
Downside volatility, 1Y 75.0%26.5%59.0% 12.7%
Beta vs S&P 500, 1Y 1.29-0.39-0.14 1.00
Return / volatility, 1Y -0.092.35-0.98 1.02
Max drawdown, 5Y -94.5%-37.1%-86.2% -25.4%
From 52-week high -26.5%-2.4%-51.5% -1.8%
52-week high $2.94$62.08$2.99 $779.14
52-week low $1.12$36.32$1.35 $631.97

Valuation History

Weekly multiples on trailing twelve-month fundamentals. Negative or extreme readings (a loss year, a collapsed denominator) are left out so the chart stays readable.

MultipleMNTKECLNE
P/E now vs peer median 39.0xmedian 10.9x 17.6xmedian 13.5x -3.4xmedian 10.9x
P/S now vs peer median 1.6xmedian 1.2x 1.0xmedian 2.1x 0.7xmedian 1.2x
EV/EBITDA now vs peer median 12.8xmedian 14.0x 7.7xmedian 5.9x 15.3xmedian 14.0x
P/FCF now vs peer median -3.7xmedian 14.0x 6.2xmedian 11.0x 14.0xmedian 14.0x
P/B now vs peer median 1.2xmedian 1.2x 1.5xmedian 1.5x 0.6xmedian 1.2x
PEG now vs peer median -2.13median 0.19 1.46median 2.27 0.44median 0.19

Financial History

Reported figures by fiscal period, placed on the calendar year (or quarter) each period ended in, so companies with different fiscal years line up.

Trailing twelve monthsMNTKECLNE
Revenue $189.10M $98.30B $442.37M
Gross profit – – $121.76M
Operating income $1.13M $6.83B -$32.36M
Net income $7.93M $6.59B -$94.76M
Free cash flow -$83.37M $15.30B $22.86M
EPS (diluted) $0.06 $3.36 $-0.43
Cash & equivalents $15.76M $9.55B $59.15M
Total debt $149.64M $139.18B $229.02M
Shares (diluted) 143.93M 1.54B 220.26M
Enterprise value $245.06M $33.90B -$342.87M

All Metrics

58 metrics · best in bold

Bold marks the best reading: the lowest positive value for multiples, leverage and payout, the highest for everything else. The bar under each value is its percentile against that company's own peers. Hover a value for its rank and the peer median.

Valuation

12 metrics
MetricMNTKECLNE
P/E 39.0x 17.6x -3.4x
P/FCF -3.7x 6.2x 14.0x
P/Operating cash flow 7.1x 6.2x 6.9x
P/S 1.6x 1.0x 0.7x
P/B 1.2x 1.5x 0.6x
P/Tangible book 1.3x 1.5x 0.6x
EV/EBITDA 12.8x 7.7x 15.3x
EV/EBIT 394.0x 17.0x -12.6x
EV/Revenue 2.3x 1.2x 0.9x
EV/FCF -5.3x 7.6x 17.9x
EV/Operating cash flow 10.2x 7.6x 8.8x
PEG (3Y EPS CAGR) -2.13 1.46 0.44

Growth

14 metrics
MetricMNTKECLNE
Revenue growth (1Y) 4.3% 11.2% 5.2%
Revenue CAGR (3Y) 2.1% -6.8% -1.4%
Gross profit growth (1Y) – – -0.3%
Gross profit CAGR (3Y) – – 7.0%
Operating income growth (1Y) -89.7% 204.9% 79.4%
Operating income CAGR (3Y) -62.7% -14.3% 22.0%
Net income growth (1Y) 199.8% 135.7% 53.6%
Net income CAGR (3Y) -18.0% -11.6% -7.2%
EPS growth (1Y) 197.9% 6.3% 53.7%
EPS CAGR (3Y) -18.3% 12.0% -7.7%
Operating cash flow growth (1Y) -6.9% 12.1% -54.5%
Operating cash flow CAGR (3Y) -10.4% -5.9% 19.2%
Free cash flow growth (1Y) -312.7% 12.1% -60.1%
Free cash flow CAGR (3Y) -100.9% -18.6% 36.4%

Profitability

14 metrics
MetricMNTKECLNE
Gross margin – – 27.5%
EBITDA margin 18.4% 15.4% 6.0%
Operating margin 0.6% 6.9% -7.3%
Pretax margin 2.0% 8.0% -21.4%
Net margin 4.2% 5.3% -21.3%
FCF margin -44.1% 15.6% 5.2%
Operating cash flow margin 23.0% 15.6% 10.5%
Return on equity 3.0% 10.4% -16.9%
Return on assets 1.7% 3.9% -9.2%
Return on invested capital 0.3% 6.9% -4.1%
Return on capital employed 0.3% 5.3% -3.6%
Asset turnover 0.4x 0.6x 0.4x
Cash conversion (OCF / net income) 5.5x 2.3x -0.5x
Stock comp / revenue 1.0% – 2.0%

Financial Health

11 metrics
MetricMNTKECLNE
Debt / assets 31.8% 21.5% 22.3%
Debt / equity 0.6x 0.6x 0.4x
Net debt / EBITDA 3.9x 1.4x 3.3x
Debt / FCF -1.8x 2.4x 10.0x
Liabilities / assets 43.8% 61.3% 45.5%
Equity / assets 56.2% 38.7% 54.5%
Interest coverage 0.2x 1.5x -0.7x
Current ratio 0.6x 1.2x 2.5x
Quick ratio 0.5x 0.7x 1.9x
Cash ratio 0.4x 0.4x 1.1x
Altman Z-score 1.44 1.66 -0.76

Shareholder Returns

7 metrics
MetricMNTKECLNE
Dividend yield – 4.0% –
Net buyback yield – -2.5% 0.0%
Shareholder yield – 1.5% 0.0%
Payout ratio (earnings) – 55.0% –
Payout ratio (FCF) – 23.7% –
Dividend growth (1Y) – -7.7% –
Dividend CAGR (3Y) – -4.9% –

Analyst Estimates

Solid lines are reported fiscal-year results; dashed lines are the consensus for the years ahead. Hover a year for the analysts' high and low, and how each result compared with its estimate.

ConsensusMNTKECLNE
Forward P/E 18.0xFY2026 9.0xFY2026 –
EPS, next fiscal year $0.12FY2026 $6.74FY2026 $-0.02FY2026
EPS growth, next FY +1,100.0%FY2026 +76.9%FY2026 -300.0%FY2026
EPS growth, the year after +41.7% -4.9% –
Revenue, next fiscal year $199.18MFY2026 $106.61BFY2026 $453.71MFY2026
Revenue growth, next FY +12.9%FY2026 +10.0%FY2026 +6.8%FY2026
Revenue growth, the year after +28.2% -8.6% +2.2%

Institutional Ownership

13F filings, quarter ended Jun 30, 2026
HoldersMNTKECLNE
Held by institutions 14.9% 1.6% 49.3%
Institutions holding 92 343 193
Change in shares held, QoQ +3.2% +2.3% +1.9%
Institutions buying 52 196 86
Institutions selling 26 92 59
Buyers to sellers 2.00 2.13 1.46

Return Correlation

Daily returns, last 12 months

1.00 means two stocks move in lockstep, 0 that they move independently. Pairs below about 0.5 diversify each other.

MNTKECLNE
MNTK 1.00 0.01 0.07
E 0.01 1.00 0.15
CLNE 0.07 0.15 1.00

Add a Peer

Largest companies in the same industry

Related Comparisons

Frequently Asked Questions

Which is bigger, MNTK, E and CLNE?

Eni Spa (E) is the largest by market capitalisation: Montauk Renewables (MNTK) $317.29M, Eni Spa (E) $89.34B, Clean Energy Fuels (CLNE) $318.27M.

Which stock is cheaper, MNTK, E and CLNE?

Eni Spa (E) trades on the lowest price-to-earnings ratio (Montauk Renewables (MNTK) 40.0x, Eni Spa (E) 17.2x, Clean Energy Fuels (CLNE) -3.4x). On next year's consensus earnings, Eni Spa (E) is cheapest (Montauk Renewables (MNTK) 18.0x, Eni Spa (E) 9.0x). A lower multiple can reflect slower expected growth, so read it next to the growth figures.

Which company is growing faster?

Eni Spa (E) grew revenue fastest over the trailing twelve months: Montauk Renewables (MNTK) +4.3%, Eni Spa (E) +11.2%, Clean Energy Fuels (CLNE) +5.2%.

Which company is more profitable?

Eni Spa (E) has the highest net margin (Montauk Renewables (MNTK) 4.2%, Eni Spa (E) 5.3%, Clean Energy Fuels (CLNE) -21.3%). On return on invested capital, Eni Spa (E) leads (Montauk Renewables (MNTK) 0.3%, Eni Spa (E) 6.9%, Clean Energy Fuels (CLNE) -4.1%).

Which stock has performed better?

Over the past year Eni Spa (E) returned the most: Montauk Renewables (MNTK) -7.3%, Eni Spa (E) +64.5%, Clean Energy Fuels (CLNE) -52.6%. Over five years, Eni Spa (E) compounded fastest (Montauk Renewables (MNTK) -28.4%/yr, Eni Spa (E) +16.4%/yr, Clean Energy Fuels (CLNE) -29.7%/yr). Returns are price only, before dividends.

Which stock is riskier?

By one-year price volatility, Eni Spa (E) has been the steadiest (Montauk Renewables (MNTK) 78.6%, Eni Spa (E) 27.5%, Clean Energy Fuels (CLNE) 53.8%). Volatility measures how widely the price swings, not the risk of the business.

Which is the better stock, MNTK, E and CLNE?

There is no single answer; it depends on what you are buying for. On the 12 head-to-head measures on this page, Eni Spa (E) leads on 10. Business Quant does not give investment advice; use the comparison as a starting point for your own research.

Data from SEC filings, exchange prices and consensus estimates, via Business Quant. Percentile scores compare each company with its own peer group, so two companies' scores are each relative to different peers unless you rank against the whole market. Price returns exclude dividends. Nothing on this page is investment advice.