GPRE vs E vs MNTK Stock Comparison

Green Plains, Eni Spa and Montauk Renewables Prices as of Oct 23, 2026 Peers: Industry group
GPRE Green Plains Inc.
$13.98 -7.5% 1M +32.4% 1Y
Market cap
$970.68M
P/E
7.8x
Revenue (TTM)
$1.83B
Div. yield
–
Biofuels Energy
6 wins
E Eni Spa
$62.08 +13.2% 1M +71.5% 1Y
Market cap
$91.59B
P/E
17.6x
Revenue (TTM)
$98.30B
Div. yield
-0.04%
Integrated Oil and Gas Energy
5 wins

Head to Head

11 decided of 12

Green Plains leads on 6 of the 12 questions below (Green Plains 6, Eni Spa 5). Which ones matter depends on what you are buying for; a cheap multiple and slow growth often come together.

QuestionGPREEMNTKLeader
Larger companyMarket capitalisation $970.68M $91.59B $307.26M E
Cheaper on earningsLower P/E, profitable companies only 7.8x 17.6x 38.7x GPRE
Cheaper on forward earningsLower price / next fiscal year consensus EPS 7.0x 9.3x 17.8x GPRE
Faster revenue growthRevenue growth, trailing twelve months -23.7% +11.2% +4.3% E
More profitableNet margin, trailing twelve months 6.8% 5.3% 4.2% GPRE
Better return on capitalReturn on invested capital 10.3% 6.9% 0.3% GPRE
Less leveragedLower net debt / EBITDA 1.3x 1.4x 3.9x GPRE
Higher dividend yieldTrailing dividend yield 0.00% -0.04% 0.00% –
Better 1-year returnPrice return, last 12 months +32.4% +71.5% -3.6% E
Better 5-year returnAnnualised price return, 5 years -17.4%/yr +17.1%/yr -28.4%/yr E
Less volatileAnnualised volatility, 1 year 57.2% 27.4% 79.2% E
Higher overall scoreMean of the five percentile scores vs peers 89/100 50/100 51/100 GPRE

Percentile Scorecard

GPREEMNTK

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

AxisGPREEMNTK
Valuation 100 #1 of 11 75 #26 of 99 70 #4 of 11
Growth 100 #1 of 11 64 #36 of 97 20 #9 of 11
Profitability 88 #2 of 9 48 #50 of 96 75 #3 of 9
Financial Health 70 #4 of 11 35 #67 of 102 40 #7 of 11
Shareholder Returns – 31 #53 of 76 –
Overall 89 50 51
  • GPRE ranked among 11 companies in Renewable Fuels
  • E ranked among 103 companies in Oil and Gas Upstream
  • MNTK ranked among 11 companies in Renewable Fuels

Price Performance

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

Returns

PeriodGPREEMNTKSPY
1 month -7.5%+13.2%-6.6% -1.0%
3 months -17.5%+18.4%+13.9% +2.9%
6 months -12.2%+14.7%+49.0% +6.4%
Year to date +42.7%+63.6%+27.5% +11.4%
1 year +32.4%+71.5%-3.6% +13.1%
3 years -49.3%+91.6%-78.6% +79.4%
3 years, per year -20.3%+24.2%-40.2% +21.5%
5 years -61.5%+119.8%-81.2% +67.7%
5 years, per year -17.4%+17.1%-28.4% +10.9%
10 years -47.7%+107.2%— +255.2%
10 years, per year -6.3%+7.6%— +13.5%

Risk

MeasureGPREEMNTKSPY
Volatility, 1Y 57.2%27.4%79.2% 12.7%
Downside volatility, 1Y 59.7%26.4%75.9% 12.7%
Beta vs S&P 500, 1Y 0.25-0.361.23 1.00
Return / volatility, 1Y 0.572.61-0.05 1.03
Max drawdown, 5Y -92.5%-37.1%-94.5% -25.4%
From 52-week high -27.3%0.0%-27.6% -2.5%
52-week high $19.23$62.08$2.94 $779.14
52-week low $9.40$36.20$1.12 $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.

MultipleGPREEMNTK
P/E now vs peer median 7.8xmedian 10.9x 18.1xmedian 13.1x 38.5xmedian 10.9x
P/S now vs peer median 0.5xmedian 1.2x 1.0xmedian 2.0x 1.6xmedian 1.2x
EV/EBITDA now vs peer median 5.4xmedian 14.0x 7.8xmedian 5.7x 12.6xmedian 14.0x
P/FCF now vs peer median 7.7xmedian 14.1x 6.4xmedian 11.1x -3.7xmedian 14.1x
P/B now vs peer median 1.1xmedian 1.1x 1.5xmedian 1.5x 1.2xmedian 1.1x
PEG now vs peer median 0.23median 0.19 1.50median 2.24 -2.10median 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 monthsGPREEMNTK
Revenue $1.83B $98.30B $189.10M
Gross profit $293.29M – –
Operating income $136.02M $6.83B $1.13M
Net income $125.21M $6.59B $7.93M
Free cash flow $127.39M $15.30B -$83.37M
EPS (diluted) $1.47 $3.36 $0.06
Cash & equivalents $185.38M $9.55B $15.76M
Total debt $483.69M $139.18B $494.59M
Shares (diluted) 84.49M 1.54B 143.93M
Enterprise value $371.35M $36.15B $235.04M

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
MetricGPREEMNTK
P/E 7.8x 18.1x 38.5x
P/FCF 7.7x 6.4x -3.7x
P/Operating cash flow 6.4x 6.4x 7.0x
P/S 0.5x 1.0x 1.6x
P/B 1.1x 1.5x 1.2x
P/Tangible book 1.1x 1.5x 1.2x
EV/EBITDA 5.4x 7.8x 12.6x
EV/EBIT 9.4x 17.3x 390.2x
EV/Revenue 0.7x 1.2x 2.3x
EV/FCF 10.0x 7.7x -5.3x
EV/Operating cash flow 8.3x 7.7x 10.1x
PEG (3Y EPS CAGR) 0.23 1.50 -2.10

Growth

14 metrics
MetricGPREEMNTK
Revenue growth (1Y) -23.7% 11.2% 4.3%
Revenue CAGR (3Y) -19.9% -6.8% 2.1%
Gross profit growth (1Y) 127.6% – –
Gross profit CAGR (3Y) 116.7% – –
Operating income growth (1Y) 280.2% 204.9% -89.7%
Operating income CAGR (3Y) 39.9% -14.3% -62.7%
Net income growth (1Y) 182.8% 135.7% 199.8%
Net income CAGR (3Y) 36.7% -11.6% -18.0%
EPS growth (1Y) 164.2% 6.3% 197.9%
EPS CAGR (3Y) 33.3% 12.0% -18.3%
Operating cash flow growth (1Y) 289.5% 12.1% -6.9%
Operating cash flow CAGR (3Y) 168.9% -5.9% -10.4%
Free cash flow growth (1Y) 389.9% 12.1% -312.7%
Free cash flow CAGR (3Y) 44.5% -18.6% -100.9%

Profitability

14 metrics
MetricGPREEMNTK
Gross margin 16.0% – –
EBITDA margin 12.9% 15.4% 18.4%
Operating margin 7.4% 6.9% 0.6%
Pretax margin 3.7% 8.0% 2.0%
Net margin 6.8% 5.3% 4.2%
FCF margin 7.0% 15.6% -44.1%
Operating cash flow margin 8.4% 15.6% 23.0%
Return on equity 15.1% 10.4% 3.0%
Return on assets 7.7% 3.9% 1.7%
Return on invested capital 10.3% 6.9% 0.3%
Return on capital employed 10.4% 5.3% 0.3%
Asset turnover 1.1x 0.6x 0.4x
Cash conversion (OCF / net income) 1.2x 2.3x 5.5x
Stock comp / revenue 0.6% – 1.0%

Financial Health

11 metrics
MetricGPREEMNTK
Debt / assets 29.2% 21.5% 31.8%
Debt / equity 0.6x 0.6x 0.6x
Net debt / EBITDA 1.3x 1.4x 3.9x
Debt / FCF 3.8x 2.4x -1.8x
Liabilities / assets 47.5% 61.3% 43.8%
Equity / assets 52.5% 38.7% 56.2%
Interest coverage 1.9x 1.5x 0.2x
Current ratio 2.0x 1.2x 0.6x
Quick ratio 0.8x 0.7x 0.5x
Cash ratio 0.6x 0.4x 0.4x
Altman Z-score 2.06 1.67 1.42

Shareholder Returns

7 metrics
MetricGPREEMNTK
Dividend yield – 3.9% –
Net buyback yield – -2.5% –
Shareholder yield 0.0% 1.4% –
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.

ConsensusGPREEMNTK
Forward P/E 7.0xFY2026 9.3xFY2026 17.8xFY2026
EPS, next fiscal year $2.00FY2026 $6.67FY2026 $0.12FY2026
EPS growth, next FY – +75.1%FY2026 +1,100.0%FY2026
EPS growth, the year after -11.0% -4.5% +41.7%
Revenue, next fiscal year $1.82BFY2026 $106.75BFY2026 $199.18MFY2026
Revenue growth, next FY -12.7%FY2026 +10.1%FY2026 +12.9%FY2026
Revenue growth, the year after +2.7% -8.7% +28.2%

Institutional Ownership

13F filings, quarter ended Jun 30, 2026
HoldersGPREEMNTK
Held by institutions 100.0% 1.6% 14.9%
Institutions holding 219 343 92
Change in shares held, QoQ +5.7% +2.3% +3.2%
Institutions buying 118 196 52
Institutions selling 76 92 26
Buyers to sellers 1.55 2.13 2.00

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.

GPREEMNTK
GPRE 1.00 0.28 0.12
E 0.28 1.00 0.01
MNTK 0.12 0.01 1.00

Add a Peer

Largest companies in the same industry

Related Comparisons

Frequently Asked Questions

Which is bigger, GPRE, E and MNTK?

Eni Spa (E) is the largest by market capitalisation: Green Plains (GPRE) $970.68M, Eni Spa (E) $91.59B, Montauk Renewables (MNTK) $307.26M.

Which stock is cheaper, GPRE, E and MNTK?

Green Plains (GPRE) trades on the lowest price-to-earnings ratio (Green Plains (GPRE) 7.8x, Eni Spa (E) 17.6x, Montauk Renewables (MNTK) 38.7x). On next year's consensus earnings, Green Plains (GPRE) is cheapest (Green Plains (GPRE) 7.0x, Eni Spa (E) 9.3x, Montauk Renewables (MNTK) 17.8x). 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: Green Plains (GPRE) -23.7%, Eni Spa (E) +11.2%, Montauk Renewables (MNTK) +4.3%.

Which company is more profitable?

Green Plains (GPRE) has the highest net margin (Green Plains (GPRE) 6.8%, Eni Spa (E) 5.3%, Montauk Renewables (MNTK) 4.2%). On return on invested capital, Green Plains (GPRE) leads (Green Plains (GPRE) 10.3%, Eni Spa (E) 6.9%, Montauk Renewables (MNTK) 0.3%).

Which stock has performed better?

Over the past year Eni Spa (E) returned the most: Green Plains (GPRE) +32.4%, Eni Spa (E) +71.5%, Montauk Renewables (MNTK) -3.6%. Over five years, Eni Spa (E) compounded fastest (Green Plains (GPRE) -17.4%/yr, Eni Spa (E) +17.1%/yr, Montauk Renewables (MNTK) -28.4%/yr). Returns are price only, before dividends.

Which stock is riskier?

By one-year price volatility, Eni Spa (E) has been the steadiest (Green Plains (GPRE) 57.2%, Eni Spa (E) 27.4%, Montauk Renewables (MNTK) 79.2%). Volatility measures how widely the price swings, not the risk of the business.

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

There is no single answer; it depends on what you are buying for. On the 12 head-to-head measures on this page, Green Plains (GPRE) leads on 6. 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.