Compare Stocks: MNTK, GPRE, GEVO, and OPAL

Comparative Price Performance Over Time

Compare Price & Volume

Company	Current Price	50-Day Moving Average	52-Week Range	Market Cap	Beta	Avg. Volume	Today's Volume
GEVO Gevo	$1.69 +10.5%	$1.53	$1.37 ▼ $2.97	$378.27M	1.04	2.90 million shs	3.79 million shs
GPRE Green Plains	$14.65 -2.1%	$16.04	$8.65 ▼ $19.65	$1.05B	1.17	1.34 million shs	1.50 million shs
MNTK Montauk Renewables	$1.82 -2.2%	$1.71	$1.07 ▼ $2.57	$264.76M	0.57	147,578 shs	76,395 shs
OPAL OPAL Fuels	$2.13 +1.4%	$2.20	$1.65 ▼ $2.87	$364.14M	0.76	180,115 shs	141,727 shs

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Compare Price Performance

Company	1-Day Performance	7-Day Performance	30-Day Performance	90-Day Performance	1-Year Performance
GEVO Gevo	+10.46%	+10.46%	+4.00%	-6.11%	-5.06%
GPRE Green Plains	-2.14%	-9.46%	-13.57%	-6.51%	+55.69%
MNTK Montauk Renewables	-2.15%	-1.09%	-2.67%	+4.00%	-16.13%
OPAL OPAL Fuels	+1.43%	-4.05%	-3.62%	-0.93%	-10.13%

Compare Price & Volume

Company	Current Price	50-Day Moving Average	52-Week Range	Market Cap	Beta	Avg. Volume	Today's Volume
GEVO Gevo	$1.69 +10.5%	$1.53	$1.37 ▼ $2.97	$378.27M	1.04	2.90 million shs	3.79 million shs
GPRE Green Plains	$14.65 -2.1%	$16.04	$8.65 ▼ $19.65	$1.05B	1.17	1.34 million shs	1.50 million shs
MNTK Montauk Renewables	$1.82 -2.2%	$1.71	$1.07 ▼ $2.57	$264.76M	0.57	147,578 shs	76,395 shs
OPAL OPAL Fuels	$2.13 +1.4%	$2.20	$1.65 ▼ $2.87	$364.14M	0.76	180,115 shs	141,727 shs

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Compare Price Performance

Company	1-Day Performance	7-Day Performance	30-Day Performance	90-Day Performance	1-Year Performance
GEVO Gevo	+10.46%	+10.46%	+4.00%	-6.11%	-5.06%
GPRE Green Plains	-2.14%	-9.46%	-13.57%	-6.51%	+55.69%
MNTK Montauk Renewables	-2.15%	-1.09%	-2.67%	+4.00%	-16.13%
OPAL OPAL Fuels	+1.43%	-4.05%	-3.62%	-0.93%	-10.13%

Compare Analyst Forecasts

Company	Consensus Rating Score	Consensus Rating	Consensus Price Target	% Upside from Current Price
GEVO Gevo	2.17	Hold	$2.55	50.89% Upside
GPRE Green Plains	2.00	Hold	$15.43	5.31% Upside
MNTK Montauk Renewables	1.80	Reduce	$1.80	-1.10% Downside
OPAL OPAL Fuels	1.33	Sell	$2.40	12.68% Upside

Current Analyst Ratings Breakdown

Latest MNTK, GPRE, GEVO, and OPAL Analyst Ratings

Date	Company	Brokerage	Action	Rating	Price Target
8/25/2026	GPRE Green Plains	UBS Group Subscribe to MarketBeat All Access for the firm's recommendation accuracy rating	Reiterated Rating	Neutral
8/14/2026	GEVO Gevo	Jefferies Financial Group Subscribe to MarketBeat All Access for the firm's recommendation accuracy rating	Reiterated Rating	Hold	$1.90
8/7/2026	OPAL OPAL Fuels	Weiss Ratings Subscribe to MarketBeat All Access for the firm's recommendation accuracy rating	Reiterated Rating	Sell (D+)
8/7/2026	GPRE Green Plains	BMO Capital Markets Subscribe to MarketBeat All Access for the firm's recommendation accuracy rating	Reiterated Rating	Market Perform
8/6/2026	GPRE Green Plains	Zacks Research Subscribe to MarketBeat All Access for the firm's recommendation accuracy rating	Downgrade	Hold ➝ Strong Sell
7/17/2026	GEVO Gevo	Weiss Ratings Subscribe to MarketBeat All Access for the firm's recommendation accuracy rating	Reiterated Rating	Sell (D-)
7/17/2026	GPRE Green Plains	Weiss Ratings Subscribe to MarketBeat All Access for the firm's recommendation accuracy rating	Reiterated Rating	Sell (D-)
7/17/2026	MNTK Montauk Renewables	Weiss Ratings Subscribe to MarketBeat All Access for the firm's recommendation accuracy rating	Reiterated Rating	Sell (D)
7/17/2026	GPRE Green Plains	UBS Group Subscribe to MarketBeat All Access for the firm's recommendation accuracy rating	Boost Price Target	Neutral	$12.00 ➝ $20.00
7/16/2026	GEVO Gevo	Northland Securities Subscribe to MarketBeat All Access for the firm's recommendation accuracy rating	Set Price Target		$3.75
7/7/2026	GEVO Gevo	Zacks Research Subscribe to MarketBeat All Access for the firm's recommendation accuracy rating	Upgrade	Strong Sell ➝ Hold

(Data available from 8/26/2023 forward. View 10+ years of historical ratings with our analyst ratings screener.)

Compare Sales & Book Value

Company	Annual Revenue	Price/Sales	Cashflow	Price/Cash	Book Value	Price/Book
GEVO Gevo	$160.58M	2.60	N/A	N/A	$1.10 per share	1.54
GPRE Green Plains	$2.09B	0.49	$0.58 per share	25.43	$12.41 per share	1.18
MNTK Montauk Renewables	$176.38M	1.47	$0.22 per share	8.24	$1.86 per share	0.98
OPAL OPAL Fuels	$348.98M	1.06	$0.23 per share	9.13	$0.22 per share	9.68

Compare Profitability & Earnings

Company	Net Income	EPS	Trailing P/E Ratio	Forward P/E Ratio	P/E Growth	Net Margins	Return on Equity (ROE)	Return on Assets (ROA)	Next Earnings Date
GEVO Gevo	-$33.84M	-$0.89	N/A	169.00	N/A	-119.93%	-6.50%	-4.22%	11/9/2026 (Estimated)
GPRE Green Plains	-$121.28M	$1.59	9.21	8.83	N/A	6.78%	14.52%	7.33%	11/4/2026 (Estimated)
MNTK Montauk Renewables	$1.75M	$0.06	30.34	18.20	N/A	3.40%	2.45%	1.47%	11/4/2026 (Estimated)
OPAL OPAL Fuels	$14.75M	-$0.01	N/A	N/A	N/A	0.65%	15.54%	0.22%	11/5/2026 (Estimated)

Latest MNTK, GPRE, GEVO, and OPAL Earnings

Date	Quarter	Company	Consensus Estimate	Reported EPS	Beat/Miss	Gap EPS	Revenue Estimate	Actual Revenue
8/10/2026	Q2 2026	OPAL OPAL Fuels	$0.0772	-$0.05	-$0.1272	-$0.05	$90.72 million	$83.40 million
8/6/2026	Q2 2026	GEVO Gevo	-$0.0209	-$0.01	+$0.0109	-$0.75	$46.40 million	$46.50 million
8/6/2026	Q2 2026	GPRE Green Plains	$0.5410	$0.83	+$0.2890	$0.83	$542.38 million	$446.22 million

Compare Dividends

Company	Annual Payout	Dividend Yield	5-Year Annualized Dividend Growth	Payout Ratio	Years of Consecutive Growth
GEVO Gevo	N/A	N/A	N/A	N/A	N/A
GPRE Green Plains	N/A	N/A	N/A	N/A	N/A
MNTK Montauk Renewables	N/A	N/A	N/A	N/A	N/A
OPAL OPAL Fuels	N/A	N/A	N/A	N/A	N/A

Compare Debt

Company	Debt-to-Equity Ratio	Current Ratio	Quick Ratio
GEVO Gevo	0.61	2.70	2.19
GPRE Green Plains	0.45	1.99	1.58
MNTK Montauk Renewables	0.57	0.62	0.62
OPAL OPAL Fuels	10.89	1.82	1.68

Compare Ownership

Institutional Ownership

Company	Institutional Ownership
GEVO Gevo	35.17%
GPRE Green Plains	N/A
MNTK Montauk Renewables	16.35%
OPAL OPAL Fuels	12.16%

Insider Ownership

Company	Insider Ownership
GEVO Gevo	7.09%
GPRE Green Plains	1.40%
MNTK Montauk Renewables	54.30%
OPAL OPAL Fuels	85.69%

Compare Miscellaneous Stats

Company	Employees	Shares Outstanding	Free Float	Optionable
GEVO Gevo	100	247.24 million	229.71 million	Optionable
GPRE Green Plains	900	70.10 million	69.12 million	Optionable
MNTK Montauk Renewables	130	142.34 million	65.05 million	Optionable
OPAL OPAL Fuels	270	173.40 million	24.81 million	Optionable

MNTK, GPRE, GEVO, and OPAL Headlines

Recent News About These Companies

OPAL Fuels (NASDAQ:OPAL) Raised to "Hold" at Wall Street Zen

August 15, 2026 | americanbankingnews.com

OPAL Fuels (NASDAQ:OPAL) Upgraded by Wall Street Zen to "Hold" Rating

August 15, 2026 | marketbeat.com

OPAL Fuels Welcomes Congressman Eugene Vindman to Prince William County Renewable Natural Gas Facility

August 13, 2026 | caledonianrecord.comC

Opal Fuels outlines ~3 million MMBtu of annual design capacity coming online over next 24 months while maintaining full-year guidance

August 11, 2026 | seekingalpha.com

Are Utility Stocks Watching OPAL Fuels (NASDAQ:OPAL) More Closely?

August 11, 2026 | kalkinemedia.comK

Opal Fuels Sees Strong Growth Despite Modest RNG Production

August 11, 2026 | news.themarketisopen.comN

OPAL Fuels Q2 Earnings Call Highlights

August 10, 2026 | marketbeat.com

OPAL Fuels (NASDAQ:OPAL): What Could Today’s Update Reveal About Renewable Natural Gas Project Execution?

August 10, 2026 | kalkinemedia.comK

OPAL Fuels (NASDAQ:OPAL) Releases Earnings Results, Misses Estimates By $0.13 EPS

August 10, 2026 | marketbeat.com

OPAL Fuels Reports Second Quarter 2026 Results

August 10, 2026 | businesswire.com

OPAL Fuels (NASDAQ:OPAL) Upgraded at Wall Street Zen

August 1, 2026 | marketbeat.com

OPAL Fuels to Supply Municipal Refuse Fleet with Renewable Natural Gas Across California’s Central Valley

July 30, 2026 | aol.comA

OPAL Fuels (OPAL) to Post Quarterly Earnings on Thursday

July 30, 2026 | marketbeat.com

OPAL Fuels Inc.

July 27, 2026 | marketwatch.com

OPAL Fuels Announces Second Quarter 2026 Earnings Release Date and Conference Call

July 27, 2026 | businesswire.com

OPAL Fuels Stockholders Approve Directors and Auditor Slate

June 22, 2026 | tipranks.com

Insider Buying: OPAL Fuels (NASDAQ:OPAL) Director Buys 50,000 Shares of Stock

June 16, 2026 | insidertrades.com

Noteworthy Insider Activity: McDougald Scott Sutton Invests $97K In OPAL Fuels Stock

June 15, 2026 | benzinga.com

OPAL Fuels, GFL Agree 2 Landfill Gas Projects

June 7, 2026 | rigzone.comR

OPAL Fuels and GFL Environmental Advance Growth Strategy with New RNG Projects in Alabama and Georgia

June 3, 2026 | prnewswire.com

OPAL Fuels Powers Ahead: Strong Q1 Performance, Exciting Business Developments

May 26, 2026 | news.themarketisopen.comN

New MarketBeat Followers Over Time

Media Sentiment Over Time

MNTK, GPRE, GEVO, and OPAL Company Descriptions

Gevo NASDAQ:GEVO

$1.69 +0.16 (+10.46%)

Closing price 08/25/2026 04:00 PM Eastern

Extended Trading

$1.68 0.00 (-0.30%)

As of 06:39 AM Eastern

Gevo, Inc. operates as a carbon abatement company. It operates through three segments: Gevo, Agri-Energy, and Renewable Natural Gas. The company focuses on transforming renewable energy into energy-dense liquid hydrocarbons that can be used as renewable fuels. It offers renewable gasoline and diesel, isobutanol, sustainable aviation fuel, renewable natural gas, isobutylene, ethanol, and animal feed and protein. The company was formerly known as Methanotech, Inc. and changed its name to Gevo, Inc. in March 2006. Gevo, Inc. was incorporated in 2005 and is headquartered in Englewood, Colorado.

Green Plains NASDAQ:GPRE

$14.65 -0.32 (-2.14%)

Closing price 08/25/2026 04:00 PM Eastern

Extended Trading

$14.66 +0.00 (+0.03%)

As of 04:20 AM Eastern

Green Plains Inc. produces low-carbon fuels in the United States and internationally. It operates through three segments: Ethanol Production, Agribusiness and Energy Services, and Partnership. The Ethanol Production segment produces ethanol, distillers grains, and ultra-high protein and renewable corn oil. The Agribusiness and Energy Services segment engages in the grain procurement, handling and storage, commodity marketing business; and trading of ethanol, distiller grains, renewable corn oil, grain, natural gas, and other commodities in various markets. This segment also provides grain drying and storage services to grain producers. The Partnership segment offers fuel storage and transportation services. It operates 24 ethanol storage facilities; two fuel terminal facilities; and a fleet of approximately 2,180 leased railcars. The company was formerly known as Green Plains Renewable Energy, Inc. and changed its name to Green Plains Inc. in May 2014. Green Plains Inc. was incorporated in 2004 and is headquartered in Omaha, Nebraska.

Montauk Renewables NASDAQ:MNTK

$1.82 -0.04 (-2.15%)

Closing price 08/25/2026 04:00 PM Eastern

Extended Trading

$1.82 0.00 (0.00%)

As of 08/25/2026 04:10 PM Eastern

Montauk Renewables, Inc., a renewable energy company, engages in recovery and processing of biogas from landfills and other non-fossil fuel sources. It operates in two segments, Renewable Natural Gas and Renewable Electricity Generation. The company develops, owns, and operates renewable natural gas (RNG) projects that captures methane and prevents it from being released into the atmosphere by converting it into either RNG or electrical power for the electrical grid. Its customers for RNG and renewable identification numbers (RIN) include large, long-term owner-operators of landfills and livestock farms, local utilities, and large refiners in the natural gas and refining sectors. Montauk Renewables, Inc. was founded in 1980 and is headquartered in Pittsburgh, Pennsylvania.

OPAL Fuels NASDAQ:OPAL

$2.13 +0.03 (+1.43%)

Closing price 08/25/2026 04:00 PM Eastern

Extended Trading

$2.13 0.00 (-0.05%)

As of 08/25/2026 05:37 PM Eastern

OPAL Fuels Inc., together with its subsidiaries, engages in the production and distribution of renewable natural gas for use as a vehicle fuel for heavy and medium-duty trucking fleets. It also designs, develops, constructs, operates, and services fueling stations for trucking fleets that use natural gas to displace diesel as transportation fuel. In addition, it offers design, development, and construction services for hydrogen fueling stations. Further, the company engages in the generation and sale of renewable power to utilities. OPAL Fuels Inc. is based in White Plains, New York.

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Compare Stocks

Comparative Price Performance Over Time

Compare Price & Volume

Compare Price Performance

Compare Price & Volume

Compare Price Performance

Compare Analyst Forecasts

Current Analyst Ratings Breakdown

Latest MNTK, GPRE, GEVO, and OPAL Analyst Ratings

Compare Sales & Book Value

Compare Profitability & Earnings

Latest MNTK, GPRE, GEVO, and OPAL Earnings

Compare Dividends

Compare Debt

Compare Ownership

Institutional Ownership

Insider Ownership

Compare Miscellaneous Stats

MNTK, GPRE, GEVO, and OPAL Headlines

Recent News About These Companies

New MarketBeat Followers Over Time

Media Sentiment Over Time

MNTK, GPRE, GEVO, and OPAL Company Descriptions

Gevo NASDAQ:GEVO

Green Plains NASDAQ:GPRE

Montauk Renewables NASDAQ:MNTK

OPAL Fuels NASDAQ:OPAL

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Comparative Price Performance Over Time

Compare Price & Volume

Compare Price Performance

Compare Price & Volume

Compare Price Performance

Compare Analyst Forecasts

Current Analyst Ratings Breakdown

Latest MNTK, GPRE, GEVO, and OPAL Analyst Ratings

Compare Sales & Book Value

Compare Profitability & Earnings

Latest MNTK, GPRE, GEVO, and OPAL Earnings

Compare Dividends

Compare Debt

Compare Ownership

Institutional Ownership

Insider Ownership

Compare Miscellaneous Stats

MNTK, GPRE, GEVO, and OPAL Headlines

Recent News About These Companies

New MarketBeat Followers Over Time

Media Sentiment Over Time

MNTK, GPRE, GEVO, and OPAL Company Descriptions

Gevo NASDAQ:GEVO

Green Plains NASDAQ:GPRE

Montauk Renewables NASDAQ:MNTK

OPAL Fuels NASDAQ:OPAL

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