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Compare stocks with our powerful stock comparison tool. Analyze fundamentals, price performance, and key financial indicators to make informed investment decisions. Our tool lets you compare up to ten stocks side by side based on Performance Charts, Price & Volume, MarketRank™, Analyst Ratings, Sales & Book Value, Profitability & Earnings, Dividends, Debt, Ownership, Headlines, and more. Simply enter up to ten stock symbols (e.g., BAC, JPM, WFC, C, GS) to get started and uncover top investment opportunities.

Compare
CompanyCurrent Price50-Day Moving Average52-Week RangeMarket CapBetaAvg. VolumeToday's Volume
Clean Energy Fuels Corp. stock logo
CLNE
Clean Energy Fuels
$1.43
+1.4%		$1.63
$1.41
▼
$3.11
$310.52M1.891.47 million shs1.00 million shs
Green Plains, Inc. stock logo
GPRE
Green Plains
$15.58
+6.7%		$15.17
$9.18
▼
$19.65
$1.02B1.151.40 million shs1.38 million shs
Montauk Renewables, Inc. stock logo
MNTK
Montauk Renewables
$2.35
-2.1%		$2.24
$1.07
▼
$3.28
$341.62M0.66912,580 shs535,912 shs
Alto Ingredients, Inc. stock logo
PEIX
Alto Ingredients
$4.37
-0.9%		$6.07
$0.22
▼
$11.44
$299.33M3.355.47 million shs964,131 shs
7 Energy Stocks to Buy and Hold Forever Cover
7 Energy Stocks to Buy and Hold Forever

With the proliferation of data centers and electric vehicles, the electric grid will only get more strained. Download this report to learn how energy stocks can play a role in your portfolio as the global demand for energy continues to grow.

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Compare Price Performance

Company1-Day Performance7-Day Performance30-Day Performance90-Day Performance1-Year Performance
Clean Energy Fuels Corp. stock logo
CLNE
Clean Energy Fuels
-4.08%-9.62%-13.50%-39.48%-44.49%
Green Plains, Inc. stock logo
GPRE
Green Plains
+1.81%-3.63%-2.01%-14.72%+60.79%
Montauk Renewables, Inc. stock logo
MNTK
Montauk Renewables
-5.14%-17.53%-9.09%+45.45%+18.81%
Alto Ingredients, Inc. stock logo
PEIX
Alto Ingredients
0.00%0.00%0.00%0.00%+290.18%
CompanyCurrent Price50-Day Moving Average52-Week RangeMarket CapBetaAvg. VolumeToday's Volume
Clean Energy Fuels Corp. stock logo
CLNE
Clean Energy Fuels
$1.43
+1.4%		$1.63
$1.41
▼
$3.11
$310.52M1.891.47 million shs1.00 million shs
Green Plains, Inc. stock logo
GPRE
Green Plains
$15.58
+6.7%		$15.17
$9.18
▼
$19.65
$1.02B1.151.40 million shs1.38 million shs
Montauk Renewables, Inc. stock logo
MNTK
Montauk Renewables
$2.35
-2.1%		$2.24
$1.07
▼
$3.28
$341.62M0.66912,580 shs535,912 shs
Alto Ingredients, Inc. stock logo
PEIX
Alto Ingredients
$4.37
-0.9%		$6.07
$0.22
▼
$11.44
$299.33M3.355.47 million shs964,131 shs
7 Energy Stocks to Buy and Hold Forever Cover
7 Energy Stocks to Buy and Hold Forever

With the proliferation of data centers and electric vehicles, the electric grid will only get more strained. Download this report to learn how energy stocks can play a role in your portfolio as the global demand for energy continues to grow.

Get This Free Report

Compare Price Performance

Company1-Day Performance7-Day Performance30-Day Performance90-Day Performance1-Year Performance
Clean Energy Fuels Corp. stock logo
CLNE
Clean Energy Fuels
-4.08%-9.62%-13.50%-39.48%-44.49%
Green Plains, Inc. stock logo
GPRE
Green Plains
+1.81%-3.63%-2.01%-14.72%+60.79%
Montauk Renewables, Inc. stock logo
MNTK
Montauk Renewables
-5.14%-17.53%-9.09%+45.45%+18.81%
Alto Ingredients, Inc. stock logo
PEIX
Alto Ingredients
0.00%0.00%0.00%0.00%+290.18%
CompanyConsensus Rating ScoreConsensus RatingConsensus Price Target% Upside from Current Price
Clean Energy Fuels Corp. stock logo
CLNE
Clean Energy Fuels
2.25
Hold$2.3866.67% Upside
Green Plains, Inc. stock logo
GPRE
Green Plains
2.13
Hold$15.670.56% Upside
Montauk Renewables, Inc. stock logo
MNTK
Montauk Renewables
2.20
Hold$1.80-23.40% Downside
Alto Ingredients, Inc. stock logo
PEIX
Alto Ingredients
0.00
N/AN/AN/A

Current Analyst Ratings Breakdown

Latest PEIX, GPRE, MNTK, and CLNE Analyst Ratings

DateCompanyBrokerageActionRatingPrice TargetDetails
10/12/2026
Clean Energy Fuels Corp. stock logo
CLNE
Clean Energy Fuels
Weiss Ratings logo
Weiss Ratings
Subscribe to MarketBeat All Access to unlock brokerage rankings
DowngradeSell (D-) ➝ Sell (E+)
9/29/2026
Clean Energy Fuels Corp. stock logo
CLNE
Clean Energy Fuels
Jefferies Financial Group Inc. logo
Jefferies Financial Group
Subscribe to MarketBeat All Access to unlock brokerage rankings
UpgradeHold
9/24/2026
Montauk Renewables, Inc. stock logo
MNTK
Montauk Renewables
Weiss Ratings logo
Weiss Ratings
Subscribe to MarketBeat All Access to unlock brokerage rankings
UpgradeSell (D) ➝ Sell (D+)
9/22/2026
Clean Energy Fuels Corp. stock logo
CLNE
Clean Energy Fuels
Weiss Ratings logo
Weiss Ratings
Subscribe to MarketBeat All Access to unlock brokerage rankings
UpgradeSell (E+) ➝ Sell (D-)
9/22/2026
Green Plains, Inc. stock logo
GPRE
Green Plains
Weiss Ratings logo
Weiss Ratings
Subscribe to MarketBeat All Access to unlock brokerage rankings
UpgradeSell (D-) ➝ Hold (C)
9/21/2026
Green Plains, Inc. stock logo
GPRE
Green Plains
Zacks Research logo
Zacks Research
Subscribe to MarketBeat All Access to unlock brokerage rankings
UpgradeStrong Sell ➝ Hold
9/4/2026
Clean Energy Fuels Corp. stock logo
CLNE
Clean Energy Fuels
Weiss Ratings logo
Weiss Ratings
Subscribe to MarketBeat All Access to unlock brokerage rankings
DowngradeSell (D-) ➝ Sell (E+)
9/1/2026
Montauk Renewables, Inc. stock logo
MNTK
Montauk Renewables
Zacks Research logo
Zacks Research
Subscribe to MarketBeat All Access to unlock brokerage rankings
UpgradeHold ➝ Strong-Buy
8/25/2026
Green Plains, Inc. stock logo
GPRE
Green Plains
UBS Group AG logo
UBS Group
Subscribe to MarketBeat All Access to unlock brokerage rankings
Reiterated RatingNeutral
8/18/2026
Clean Energy Fuels Corp. stock logo
CLNE
Clean Energy Fuels
Raymond James Financial, Inc. logo
Raymond James Financial
Subscribe to MarketBeat All Access to unlock brokerage rankings
Reiterated RatingStrong-Buy$2.50
8/14/2026
Clean Energy Fuels Corp. stock logo
CLNE
Clean Energy Fuels
Jefferies Financial Group Inc. logo
Jefferies Financial Group
Subscribe to MarketBeat All Access to unlock brokerage rankings
Reiterated RatingHold$1.90
(Data available from 10/13/2023 forward. View 10+ years of historical ratings with our analyst ratings screener.)
CompanyAnnual RevenuePrice/SalesCashflowPrice/CashBook ValuePrice/Book
Clean Energy Fuels Corp. stock logo
CLNE
Clean Energy Fuels
$424.83M0.74N/AN/A$2.58 per share0.55
Green Plains, Inc. stock logo
GPRE
Green Plains
$2.09B0.52$0.63 per share24.80$11.05 per share1.41
Montauk Renewables, Inc. stock logo
MNTK
Montauk Renewables
$176.38M1.90$0.22 per share10.63$1.85 per share1.27
Alto Ingredients, Inc. stock logo
PEIX
Alto Ingredients
$1.42B0.21N/AN/A$4.06 per share1.08
CompanyNet IncomeEPSTrailing P/E RatioForward P/E RatioP/E GrowthNet MarginsReturn on Equity (ROE)Return on Assets (ROA)Next Earnings Date
Clean Energy Fuels Corp. stock logo
CLNE
Clean Energy Fuels
-$222.02M-$0.44N/AN/AN/A-21.27%-16.52%-8.87%11/3/2026 (Estimated)
Green Plains, Inc. stock logo
GPRE
Green Plains
-$121.28M$1.599.809.39N/A6.78%14.52%7.33%11/4/2026 (Estimated)
Montauk Renewables, Inc. stock logo
MNTK
Montauk Renewables
$1.75M$0.0639.1713.82N/A3.40%2.45%1.47%11/4/2026 (Estimated)
Alto Ingredients, Inc. stock logo
PEIX
Alto Ingredients
-$88.95M-$1.40N/A3.21N/A-3.32%-2.90%-1.18%N/A

Latest PEIX, GPRE, MNTK, and CLNE Earnings

DateQuarterCompanyConsensus EstimateReported EPSBeat/MissGap EPSRevenue EstimateActual RevenueDetails
11/4/2026Q3 2026
Green Plains, Inc. stock logo
GPRE
Green Plains
$0.5270N/AN/AN/A$512.26 millionN/A
11/4/2026Q3 2026
Montauk Renewables, Inc. stock logo
MNTK
Montauk Renewables
$0.05N/AN/AN/A$53.34 millionN/A
11/3/2026Q3 2026
Clean Energy Fuels Corp. stock logo
CLNE
Clean Energy Fuels
-$0.01N/AN/AN/A$111.05 millionN/A
8/6/2026Q2 2026
Clean Energy Fuels Corp. stock logo
CLNE
Clean Energy Fuels
-$0.0107-$0.01+$0.0007-$0.07$111.27 million$106.36 million
8/6/2026Q2 2026
Green Plains, Inc. stock logo
GPRE
Green Plains
$0.5410$0.83+$0.2890$0.83$542.38 million$446.22 million
CompanyAnnual PayoutDividend Yield5-Year Annualized Dividend GrowthPayout RatioYears of Consecutive Growth
Clean Energy Fuels Corp. stock logo
CLNE
Clean Energy Fuels
N/AN/AN/AN/AN/A
Green Plains, Inc. stock logo
GPRE
Green Plains
N/AN/AN/AN/AN/A
Montauk Renewables, Inc. stock logo
MNTK
Montauk Renewables
N/AN/AN/AN/AN/A
Alto Ingredients, Inc. stock logo
PEIX
Alto Ingredients
N/AN/AN/AN/AN/A
CompanyDebt-to-Equity RatioCurrent RatioQuick Ratio
Clean Energy Fuels Corp. stock logo
CLNE
Clean Energy Fuels
0.41
2.48
2.15
Green Plains, Inc. stock logo
GPRE
Green Plains
0.45
1.99
1.58
Montauk Renewables, Inc. stock logo
MNTK
Montauk Renewables
0.57
0.62
0.62
Alto Ingredients, Inc. stock logo
PEIX
Alto Ingredients
0.36
1.20
0.87

Institutional Ownership

CompanyInstitutional Ownership
Clean Energy Fuels Corp. stock logo
CLNE
Clean Energy Fuels
49.94%
Green Plains, Inc. stock logo
GPRE
Green Plains
N/A
Montauk Renewables, Inc. stock logo
MNTK
Montauk Renewables
16.35%
Alto Ingredients, Inc. stock logo
PEIX
Alto Ingredients
29.47%

Insider Ownership

CompanyInsider Ownership
Clean Energy Fuels Corp. stock logo
CLNE
Clean Energy Fuels
4.12%
Green Plains, Inc. stock logo
GPRE
Green Plains
1.40%
Montauk Renewables, Inc. stock logo
MNTK
Montauk Renewables
54.30%
Alto Ingredients, Inc. stock logo
PEIX
Alto Ingredients
4.40%
CompanyEmployeesShares OutstandingFree FloatOptionable
Clean Energy Fuels Corp. stock logo
CLNE
Clean Energy Fuels
503220.23 million211.15 millionOptionable
Green Plains, Inc. stock logo
GPRE
Green Plains
64270.10 million69.12 millionOptionable
Montauk Renewables, Inc. stock logo
MNTK
Montauk Renewables
189142.34 million65.05 millionOptionable
Alto Ingredients, Inc. stock logo
PEIX
Alto Ingredients
50068.50 millionN/ANot Optionable

Recent News About These Companies

Alto Ingredients Earnings Call Highlights Profitability Upswing
August 20, 2026  |  tipranks.comhttps://www.tipranks.com/news/company-announcements/alto-ingredients-earnings-call-highlights-profitability-upswing?utm_source=marketbeat.com&utm_medium=referral
Alto Ingredients Establishes $50 Million At-The-Market Program
August 7, 2026  |  tipranks.comhttps://www.tipranks.com/news/company-announcements/alto-ingredients-establishes-50-million-at-the-market-program?utm_source=marketbeat.com&utm_medium=referral
Alto Ingredients Signals Profitable Turn in Latest Call
May 7, 2026  |  tipranks.comhttps://www.tipranks.com/news/company-announcements/alto-ingredients-signals-profitable-turn-in-latest-call?utm_source=marketbeat.com&utm_medium=referral
HC Wainwright remains a buy on Alto Ingredients (ALTO)
March 21, 2026  |  msn.comhttps://www.msn.com/en-us/money/topstocks/hc-wainwright-remains-a-buy-on-alto-ingredients-alto/ar-AA1Z5Atr
H.C. Wainwright Remains a Buy on Alto Ingredients (ALTO)
March 20, 2026  |  insidermonkey.comhttps://www.insidermonkey.com/blog/h-c-wainwright-remains-a-buy-on-alto-ingredients-alto-1721712/
Alto Ingredients, Inc. (NASDAQ:ALTO) Q4 2025 earnings call transcript
March 6, 2026  |  msn.comhttps://www.msn.com/en-us/money/companies/alto-ingredients-inc-nasdaqalto-q4-2025-earnings-call-transcript/ar-AA1XF8ST
Alto Ingredients: Q4 Earnings Snapshot
March 4, 2026  |  beloitdailynews.comB
Alto Ingredients, Inc. Reports Significant Q4 2025 Financial Improvement with Gross Profit of $15.2 Million and Net Income of $21.5 Million
March 4, 2026  |  quiverquant.comQ
Alto Ingredients Board Member Jeremy Bezdek Resigns
November 26, 2025  |  msn.comhttps://www.msn.com/en-us/money/topstocks/alto-ingredients-board-member-jeremy-bezdek-resigns/ar-AA1RdeFi
Alto Ingredients, Inc. Announces Director Departure
November 26, 2025  |  markets.businessinsider.comhttps://markets.businessinsider.com/news/stocks/alto-ingredients-inc-announces-director-departure-1035597130
Analyst Sentiment Shifts Dramatically for Alto Ingredients
November 16, 2025  |  newscase.comN
Why Alto Ingredients, Inc.’s (ALTO) Stock Is Up 10.51%
November 10, 2025  |  aaii.comA
Alto Ingredients’ Earnings Call: Financial Gains Amid Challenges
November 7, 2025  |  msn.comhttps://www.msn.com/en-us/money/other/alto-ingredients-earnings-call-financial-gains-amid-challenges/ar-AA1PYhsZ
Alto Ingredients, Inc. Reports Strong Q3 2025 Growth
November 6, 2025  |  msn.comhttps://www.msn.com/en-us/money/other/alto-ingredients-inc-reports-strong-q3-2025-growth/ar-AA1PUI5a
Alto Ingredients, Inc. Reports Third Quarter 2025 Results
November 5, 2025  |  markets.businessinsider.comhttps://markets.businessinsider.com/news/stocks/alto-ingredients-inc-reports-third-quarter-2025-results-1035498327
Alto Ingredients, Inc. Supports California's Assembly Bill 30 Allowing E15 Fuel Sales
October 6, 2025  |  quiverquant.comQ
Alto Ingredients Faces Potential Financial Setback Over Section 45Z Tax Credit Eligibility
August 10, 2025  |  tipranks.comhttps://www.tipranks.com/news/company-announcements/alto-ingredients-faces-potential-financial-setback-over-section-45z-tax-credit-eligibility?utm_source=marketbeat.com&utm_medium=referral
Alto Ingredients, Inc. (NASDAQ:ALTO) Q2 2025 Earnings Call Transcript
August 8, 2025  |  insidermonkey.comhttps://www.insidermonkey.com/blog/alto-ingredients-inc-nasdaqalto-q2-2025-earnings-call-transcript-1586478/
Alto Ingredients targets $18M in 45Z regulatory credits through plant upgrades and strategic asset monetization
August 6, 2025  |  msn.comhttps://www.msn.com/en-us/money/companies/alto-ingredients-targets-18m-in-45z-regulatory-credits-through-plant-upgrades-and-strategic-asset-monetization/ar-AA1K3iX5
Alto Ingredients, Inc. Reports Second Quarter 2025 Results | ALTO Stock News
August 6, 2025  |  gurufocus.comhttps://www.gurufocus.com/news/3041386/alto-ingredients-inc-reports-second-quarter-2025-results-alto-stock-news

New MarketBeat Followers Over Time

Media Sentiment Over Time

Clean Energy Fuels stock logo

Clean Energy Fuels NASDAQ:CLNE

$1.43 +0.02 (+1.42%)
Closing price 04:00 PM Eastern
Extended Trading
$1.44 +0.01 (+0.35%)
As of 07:30 PM Eastern
Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Massive. Learn more.

Clean Energy Fuels Corp. provides natural gas as alternative fuels for vehicle fleets and related fueling solutions in the United States and Canada. It supplies renewable natural gas (RNG), compressed natural gas (CNG), and liquefied natural gas (LNG) for medium and heavy-duty vehicles; and offers operation and maintenance services for public and private vehicle fleet customer stations. The company also designs, builds, operates, and maintains vehicle fueling stations; and sells and services compressors and other equipment that are used in RNG production and fueling stations. In addition, it transports and sells CNG, RNG, and LNG through virtual natural gas pipelines and interconnects; sells U.S. federal, state, and local government credits, such as RNG as a vehicle fuel, including Renewable Identification Numbers and Low Carbon Fuel Standards credits; and obtains federal, state, and local credits, grants, and incentives. Further, the company focuses on developing, owning, and operating dairy and other livestock waste RNG projects. It serves heavy-duty trucking, airports, refuse, public transit, industrial, and institutional energy users, as well as government fleets. Clean Energy Fuels Corp. was incorporated in 2001 and is headquartered in Newport Beach, California.

Green Plains stock logo

Green Plains NASDAQ:GPRE

$15.58 +0.98 (+6.71%)
Closing price 04:00 PM Eastern
Extended Trading
$15.62 +0.04 (+0.22%)
As of 07:30 PM Eastern
Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Massive. Learn more.

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 stock logo

Montauk Renewables NASDAQ:MNTK

$2.35 -0.05 (-2.08%)
Closing price 04:00 PM Eastern
Extended Trading
$2.36 +0.00 (+0.21%)
As of 07:30 PM Eastern
Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Massive. Learn more.

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.

Alto Ingredients stock logo

Alto Ingredients NASDAQ:PEIX

Alto Ingredients, Inc. produces and markets low-carbon renewable fuels and alcohol products in the United States. The company operates in two segments, Production and Marketing. It produces and markets ethanol; and co-products, such as wet and dry distillers grains, wet and dry corn gluten feed, condensed distillers solubles, corn gluten meal, corn germ, corn oil, dried yeast, and CO2, as well as markets ethanol produced by third parties. The company also offers ethanol transportation, storage, and delivery services through third-party service providers. It sells ethanol to integrated oil companies and gasoline marketers; distillers grains and other feed co-products to dairies and feedlots; and corn oil to poultry and biodiesel customers. The company owns and operates nine ethanol production facilities, including four plants located in the Western states of California, Oregon, and Idaho; and five plants in the Midwestern states of Illinois and Nebraska. The company was formerly known as Pacific Ethanol, Inc. and changed its name to Alto Ingredients, Inc. in January 2021. Alto Ingredients, Inc. was founded in 2003 and is headquartered in Sacramento, California.

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