Commercial and government fuel purchasers are suing major U.S. shale oil producers in the U.S. District Court for the District of New Mexico. They allege the producers coordinated output cuts with OPEC+ and each other to inflate crude and fuel prices. On August 31, 2026, the court largely denied the motions to dismiss, and plaintiffs filed amended complaints in October 2026.
Latest development Oct 8, 2026
On October 8, 2026, plaintiffs filed an amended class action complaint against Permian Resources, Chesapeake Energy (now Expand Energy), Continental Resources, and other producers. They allege the producers conspired since roughly 2017 to constrain domestic production and inflate fuel prices. The filing follows the court’s August 31, 2026, ruling that let the core antitrust conspiracy claims proceed.
Why it matters
The case tests whether U.S. producers can face liability under domestic antitrust law for output decisions allegedly coordinated with OPEC+. The answer affects shale producers, purchasers of crude oil and refined fuels, and private antitrust suits over commodity markets tied to foreign policy.
Background
Beginning in January 2024, purchasers of crude oil, gasoline, diesel, and home-heating fuel filed a series of putative class actions against major U.S. shale oil producers. Defendants include Permian Resources Corporation, Diamondback Energy, Inc., Occidental Petroleum Corporation, and Chesapeake Energy Corporation (now Expand Energy Corporation). They also include Continental Resources, Inc., EOG Resources, Inc., Hess Corporation, and Pioneer Natural Resources Company. Former Pioneer chief executive Scott Sheffield and former Hess chief executive John B. Hess are also defendants.
The complaints allege that, after an initial price war with the Organization of the Petroleum Exporting Countries (OPEC), the producers coordinated with OPEC and among themselves. The alleged aim was to restrain U.S. shale output and keep crude and refined-fuel prices elevated. Plaintiffs claim violations of Section 1 of the Sherman Act and various state antitrust and consumer-protection statutes. The allegations echo, and go further than, complaints the Federal Trade Commission (FTC) brought in the same period. In clearing the ExxonMobil-Pioneer and Chevron-Hess mergers subject to consent orders, the FTC had cited Sheffield’s and Hess’s communications with OPEC officials.
On August 1, 2024, the U.S. Judicial Panel on Multidistrict Litigation centralized five related actions, then pending in New Mexico and Nevada federal courts, as MDL No. 3119. It assigned the MDL to Judge Matthew L. Garcia of the U.S. District Court for the District of New Mexico. Additional suits followed, including a proposed class action that the City of Baltimore filed in August 2024 as an early government plaintiff. Plaintiffs consolidated their claims into a single amended complaint of 54 counts covering end-payors of crude oil and its refined derivatives nationwide. The defendants moved to dismiss, arguing among other things that the claims raised a nonjusticiable political question involving OPEC and U.S. foreign policy and that no agreement was pleaded.
On August 31, 2026, Judge Garcia denied most of the motions and dismissed only a limited number of state-law claims. He held that the alleged parallel output reductions, combined with market structure, interfirm communications, common institutional ownership, and conduct against the producers’ own economic self-interest, plausibly alleged a domestic conspiracy. He rejected the political-question defense, reasoning that antitrust law can resolve whether domestic companies coordinated production cuts. In October 2026, plaintiffs, including a group of oil futures traders, filed amended class complaints against Permian Resources, Chesapeake Energy, Continental Resources, and other producers. No court has ruled on the merits, the defendants continue to deny wrongdoing, and the case is proceeding to discovery on the surviving federal and state antitrust claims.
Timeline 7 events
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FilingPlaintiffs file amended class action against shale producers
Plaintiffs filed an amended U.S. class action accusing Permian Resources, Chesapeake Energy, Continental Resources, and other producers of conspiring since roughly 2017 to constrain domestic production and inflate fuel prices.
US plaintiffs file amended class action in shale oil antitrust case
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FilingOil futures traders file amended class complaint
Two oil trading companies and a trader filed an amended putative class complaint against independent shale oil producers in the MDL. They attached Judge Garcia’s August 31, 2026, order on the motion to dismiss.
Oil Futures Traders File Amended Class Complaint Over Alleged Oil Price-Fixing
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OrderJudge Garcia largely denies motions to dismiss
The court held that plaintiffs plausibly alleged a domestic conspiracy to restrain shale output, rejected the producers’ political-question defense, and dismissed only a limited set of state-law claims.
Shale oil companies fail to dismiss US price-fixing caseUS Shale Producers Must Face Oil Price-Fixing Claims, Judge RulesUS Judge Rules Shale Oil Antitrust Case Can Proceed Against Major Producers
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FilingCity of Baltimore sues shale producers over fuel prices
Baltimore filed a proposed class action in the District of New Mexico, joining the consolidated litigation as an early government plaintiff.
Baltimore alleges in lawsuit that US shale producers fixed fuel prices
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OrderJPML centralizes shale oil antitrust suits in New Mexico
The U.S. Judicial Panel on Multidistrict Litigation consolidated five related actions into MDL No. 3119 before Judge Matthew L. Garcia in the District of New Mexico.
IN RE: SHALE OIL ANTITRUST LITIGATION transfer orderIN RE: SHALE OIL ANTITRUST LITIGATION (2024)
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OtherFTC cites OPEC communications in clearing Exxon-Pioneer merger
The Federal Trade Commission required a consent order after alleging former Pioneer CEO Scott Sheffield coordinated with OPEC officials, allegations later echoed in the private antitrust suits.
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FilingFirst class action filed against shale producers over output cuts
Purchasers filed Rosenbaum v. Permian Resources Corp. in the U.S. District Court for the District of Nevada, alleging a conspiracy to restrain shale oil production.
Experimental AI forecast
How it is madeWill any defendant producer reach a publicly disclosed class settlement in MDL No. 3119 by September 30, 2029?
- A producer settles with the purchasers48%
- Still pending on September 30, 202942%
- Claims fail with no settlement10%
- Resolves by
- Sep 30, 2029in 35 months
- Record confidence
- Medium
A first settlement by at least one shale producer is slightly more likely than not, at 48%, by September 30, 2029. The August 31, 2026, ruling sustained the core Sherman Act conspiracy claims and opens discovery, which historically drives icebreaker settlements. Well-funded defendants and the novel OPEC theory make continued litigation a close alternative.
How it resolves. Resolves “A producer settles with the purchasers” if, by September 30, 2029, any defendant producer or individual defendant publicly files or announces a settlement agreement, including a proposed one awaiting approval, with any plaintiff class in MDL No. 3119. Resolves “Claims fail with no settlement” if, by that date, all claims against all defendants are dismissed, decided for the defendants at summary judgment or trial, or voluntarily dropped with no settlement disclosed. Otherwise resolves “Still pending on September 30, 2029.”
Reasoning
Starting point. U.S. antitrust price-fixing and output-restriction class actions that survive motions to dismiss: Most such cases that survive dismissal end in settlement, often above 70% eventually, but first settlements usually arrive two to four years after the dismissal ruling.
Antitrust class actions that survive dismissal settle in most cases, and an early icebreaker settlement often follows within two to four years. The August 31, 2026, order rejected the political-question defense and found a plausible domestic conspiracy, which raises discovery costs and settlement pressure. Partial settlements in comparable commodity cases, such as protein and generic drug litigation, often came from smaller defendants seeking cooperation credit. Several adjustments cut the other way. The defendants are large, cash-rich producers with strong precedent and reputational reasons to fight a theory tied to OPEC and foreign policy. They may seek interlocutory review or file renewed motions against the October 2026 amended complaints, which could slow the schedule. Class certification and summary judgment are unlikely before 2028, which limits forcing events inside the window. The leading alternative is that the case remains in discovery with no settlement on September 30, 2029, at 42%. A full defense win before then is unlikely because the core claims survived pleading and merits rulings come late. The previous forecast asked the same question, and the amended complaints filed October 7 and 8, 2026, were an expected step that does not justify moving any outcome by five points.
Core Sherman Act conspiracy claims survived dismissal on August 31, 2026 · Discovery costs and icebreaker incentives for smaller producers · Defendants’ deep pockets and precedent stakes favor fighting on · Possible renewed motions or interlocutory appeal on OPEC issues · No class certification or trial schedule in the record
Generated automatically by Claude Opus 5.5 on Oct 13, 2026 from this case’s record on this site, and published without editorial review. The probabilities are the model’s judgment, not measured frequencies, and they are scored publicly as cases resolve. Not legal or investment advice. How the forecasts are made
What it would mean
If a producer settles (48%), the first deal would put a price on claims that no defendant has reserved for. Diamondback’s latest annual report says pending matters, including antitrust claims, are not expected to have a material adverse effect. No damages estimate has been published, so the size of a first deal cannot yet be measured against market values of about $17B to $73B. The bigger effect would fall on the defendants that do not settle. They would face discovery that a settling producer’s documents and witnesses could strengthen.
If the claims fail without any settlement (10%), the producers would shed a contingent liability. The claims seek treble damages and cover fuel purchases since January 2021. A defense win would also weaken the theory that U.S. antitrust law reaches output restraint linked to OPEC+. That result would most likely come at summary judgment or on appeal, not soon. Purchasers, including government buyers such as Baltimore, would recover nothing, and similar suits over commodity output would become harder to bring.
Money, who pays, markets and what to watch
Two steps ahead. Federal antitrust law makes co-conspirators jointly liable for trebled damages, with no right to contribution. If one producer settles, the others remain exposed to the full trebled total, reduced only by what the settler paid. That rewards moving first. Permian Resources, the smallest listed defendant at about $17B, and the units owned by ExxonMobil and Chevron may have the clearest reasons to exit early. An early settler’s cooperation could then strengthen claims against the rest.
The money
- Figures used: Occidental Petroleum, market value $58.3B (Oct 5, 2026)[1] · EOG Resources, market value $73.3B (Sep 29, 2026)[2] · Diamondback Energy, market value $54.6B (Jun 2026)[3] · Permian Resources, market value $17.1B (May 22, 2026)[4]
Who pays
- Each producer would fund its own settlement. Pioneer’s share would sit with ExxonMobil and Hess’s with Chevron, the acquirers whose mergers the FTC cleared. Exxon Mobil Corporation has appeared alongside the defendants on the MDL docket.[5]
- Expand Energy (formerly Chesapeake) won its individual motion to dismiss, and the court held that injunctive relief did not apply to it. That narrows the group of likely payers unless the amended complaints revive claims against it.[6]
- Former chief executives Scott Sheffield and John B. Hess are individual defendants. No indemnity or insurance arrangement covering them has been disclosed.
- The end-payor class covers individuals, businesses, and political subdivisions that bought fuel from January 2021. Cities such as Baltimore would be recipients, not payers.[7][8]
Markets
- Diamondback’s FY2025 Form 10-K lists antitrust claims among routine proceedings and says none is expected to have a material adverse effect. No defendant has disclosed a litigation reserve for the case.[9]
- The listed defendants are Diamondback, valued at about $54.6B in June 2026, Occidental at $58.3B and EOG at $73.3B in late 2026, and Permian Resources at $17.1B in May 2026.[3][1][2][4]
- ExxonMobil and Chevron shareholders carry the Pioneer and Hess exposure through those subsidiaries. The amounts are small next to either parent, but they keep the case on the parents’ disclosure lists.[5]
Collecting
- Every remaining defendant is a large U.S. operator with domestic assets. Collection would not be the obstacle. Timing would be, because any judgment would likely be stayed pending appeal under a supersedeas bond.
- Plaintiffs seek treble damages under the Sherman Act along with injunctive relief. Any class settlement needs court approval under Rule 23 before cash moves from escrow to class members.[10]
- Personal-jurisdiction challenges by Pioneer and Hess are still undecided after the court held them in abeyance. Claims against those entities could still narrow before any money moves.[6]
Beyond the parties
- The August 31, 2026, order held that neither the political-question nor the act-of-state doctrine bars Sherman Act claims over domestic output coordination. It binds no other court but could persuade judges hearing commodity cases tied to foreign cartels.[6][11]
- The court relied partly on producers’ public earnings-call statements about restraining growth. If that reasoning holds, executives’ investor messaging on capital discipline becomes potential conspiracy evidence and will draw more legal review.[11][12]
- Plaintiffs allege defendants held back output while prices passed $120 per barrel against breakevens near $30. Defendants control about 16.2% of U.S. crude production, the court noted.[7][6]
- The court weighed common institutional ownership as a plus factor. That could draw scrutiny of large index holders such as Vanguard, which is listed as an interested party in Diamondback’s disclosure statement.[5]
- Shale’s fast supply response has been a key buffer in the oil market. The case asks whether restraint of that buffer was independent or agreed, which matters to fuel buyers and taxpayers.[13]
What to watch
- Oct 29, 2026EOG reports third-quarter results, which may show whether it changes its contingency disclosure after the dismissal ruling.[14]
- Late 2026Defendants answer or move against the October 2026 amended class complaints, which will show whether they seek to narrow the case or certify an appeal.
- Not yet scheduledThe court rules on the Pioneer and Hess personal-jurisdiction motions that it held in abeyance.[6]
- Early 2027Producers file FY2026 annual reports, which will show whether any changes its not-material language or records a reserve.[9]
Sources
- Occidental Petroleum (OXY) Market Cap stockanalysis.com · 2026-10-05
- EOG Resources (EOG) Market Cap stockanalysis.com · 2026-09-29
- Diamondback Energy Market Capitalization tradingeconomics.com · 2026-06
- Permian Resources (PR) Market Cap stockanalysis.com · 2026-05-22
- IN RE: Shale Oil Antitrust Litigation, MDL No. 3119 (docket) courtlistener.com
- ANTITRUST—D.N.M.: Most claims survive dismissal in Shale Oil antitrust suit vitallaw.com · 2026-09-01
- Federal Court Greenlights Antitrust Conspiracy Claims Against Shale Producers energyandthelaw.com · 2026-09-22
- In Re: Shale Oil Antitrust Litigation bergermontague.com
- Diamondback Energy, Inc. Form 10-K FY2025 sec.gov
- Class Action Complaint (D. Nev., January 2024) readwise.io
- In re Shale Oil Antitrust Litigation, order on motions to dismiss govinfo.gov · 2026-08-31
- Shale oil companies fail to dismiss U.S. price-fixing case mlex.com · 2026-09-01
- U.S. Shale Producers Lose Bid to Kill Oil Price-Fixing Case oilprice.com · 2026-09-01
- EOG Resources Inc (EOG) stock page investing.com
Experimental AI analysis by Claude Opus 5.5 on Oct 13, 2026, built on the forecast above from this case’s record and public sources found by the model’s own web search. Figures are estimates as of the dates shown, and shares of value are computed by the site from the figures cited. Published without editorial review. Nothing here predicts the price of any security or is investment advice. How it is made