The GameStop Robinhood lawsuit — formally In re: January 2021 Short Squeeze Trading Litigation, MDL No. 2989 — ended badly for the retail investors who brought it. The consolidated multidistrict case against Robinhood was dismissed on its state law and antitrust claims, and the court denied class certification on the federal securities claims. Regulators later extracted tens of millions in fines from Robinhood through separate enforcement actions, and the SEC shortened the stock settlement cycle to one day to prevent a repeat of the crisis that triggered the trading halt. A handful of related prosecutions — against short seller Andrew Left, a group of social media influencers, and in investigations touching Keith “Roaring Kitty” Gill — have played out alongside the civil case.
What Robinhood Did on January 28, 2021
On January 28, 2021, Robinhood and several other brokerages halted buying in GameStop and other volatile stocks while still letting customers sell. GameStop fell from a pre-market high above $500 to close at $193.60 that day, and by February 4, when Robinhood lifted the restrictions, the stock was at $53.50.1East Oregonian. An In-Depth Timeline of the GameStop Short Squeeze
Robinhood CEO Vlad Tenev later testified that the restrictions were imposed because the company faced a $3 billion margin call from the National Securities Clearing Corporation, a consequence of the two-day settlement cycle then in effect.2GovInfo. Game Stopped? House Financial Services Committee Hearing Investors who had been locked out of the trade — unable to buy more while the stock crashed — accused Robinhood of market manipulation, breach of fiduciary duty, and conspiring with the hedge funds that were hemorrhaging money on the short side. Dozens of suits were filed in early 2021.
The Consolidated Lawsuit and Why It Failed
The Judicial Panel on Multidistrict Litigation consolidated the cases into MDL No. 2989 and transferred them to the Southern District of Florida, where Judge Cecilia M. Altonaga presided. The MDL was organized into four tracks: antitrust claims against brokers and hedge funds, federal securities law claims, state law claims against Robinhood, and state law claims against other brokerages.3Judicial Panel on Multidistrict Litigation. MDL-2989 Tag-Along Transfer Order The litigation covered trading in more than a dozen meme stocks, including AMC Entertainment, BlackBerry, Nokia, Bed Bath & Beyond, and Koss Corporation.4U.S. Court of Appeals for the Eleventh Circuit. Juncadella v. Robinhood Financial, No. 22-10669
State Law Claims Dismissed
The negligence, breach of fiduciary duty, and good faith claims were dismissed in February 2022. Judge Altonaga found that Robinhood’s customer agreement gave the company explicit authority to restrict trading at its “sole discretion” and to refuse to execute any transaction.4U.S. Court of Appeals for the Eleventh Circuit. Juncadella v. Robinhood Financial, No. 22-10669 The Eleventh Circuit affirmed on August 10, 2023, in an opinion by Judge Britt C. Grant, holding that the customer agreement controlled and that the negligence claims were barred by the economic loss rule, a principle that prevents recovery in tort for purely financial losses between contracting parties.5Bloomberg Law. Robinhood Beats Consolidated Suit Over GameStop Trade Cutoff If you signed up for Robinhood, you agreed Robinhood could pull the plug.
Class Certification Denied on Securities Claims
The federal securities claims under the Securities Exchange Act survived longer. Plaintiffs alleged market manipulation and filed an Amended Consolidated Class Action Complaint. In November 2023, the court denied class certification, finding that individualized questions about whether each investor relied on Robinhood’s conduct would overwhelm the common issues.6CCH. Order Denying Class Certification, In re January 2021 Short Squeeze Trading Litigation Without a class, the case lost most of its practical force.
Antitrust Claims Rejected
A separate antitrust track alleged that Robinhood and Citadel Securities had conspired to restrict trading. The Eleventh Circuit affirmed the dismissal of those claims in 2024, holding that plaintiffs failed to show any anticompetitive effects in the markets they identified. The court rejected the argument that the drop in meme stock prices by itself amounted to an antitrust injury.7Inside Class Actions. Game Stopped: Eleventh Circuit Affirms Dismissal of Meme Stock Antitrust Lawsuit
What Regulators Got That Private Plaintiffs Did Not
Where the civil suits failed, regulators extracted penalties.
In March 2025, FINRA fined Robinhood Financial and Robinhood Securities a combined $26 million and ordered $3.75 million in restitution to customers. The violations spanned 2014 to 2023 and included failures in anti-money-laundering programs, customer identification procedures, and trade reporting. FINRA found that Robinhood’s automated account-opening system approved roughly 14 million accounts between 2018 and 2020 without adequate fraud screening, leading to more than 100,000 account closures.8FINRA. FINRA Orders Robinhood Financial to Pay $3.75 Million in Restitution The firms also failed to disclose their practice of “collaring” market orders, placing automatic price limits that caused over 8.7 million orders to go unexecuted and cost customers at least $3.75 million.9SteelEye. FINRA Fines Robinhood for Systemic Supervisory Failures
In January 2025, the SEC issued its own enforcement order against both Robinhood entities covering violations from 2018 to 2024. The SEC determined that Robinhood Securities had submitted thousands of inaccurate electronic records to regulators affecting roughly 392 million transactions, mismarked millions of short sales as long positions, and failed to file suspicious activity reports for months, maintaining a backlog of over 10,000 flagged transactions by the end of 2020.10SEC. Order Instituting Proceedings Against Robinhood Financial and Robinhood Securities Robinhood settled both matters without admitting or denying the findings.
The Rule Change That Actually Came Out of It
The two-day settlement cycle was the mechanical reason Robinhood’s clearinghouse demanded $3 billion in the middle of a volatile trading week. In February 2023, the SEC adopted rules shortening that cycle to one business day (T+1), and the new standard took effect on May 28, 2024. Then-SEC Chair Gary Gensler specifically cited the GameStop events as a driver of the change.11SEC. SEC Announces T+1 Settlement Cycle Implementation
Other proposed reforms did not survive. In June 2025, the SEC under Chair Paul Atkins withdrew several rule proposals initiated in response to the meme stock episode, including the Order Competition Rule, a proposed Regulation Best Execution, and a rule addressing conflicts of interest from predictive data analytics and gamification in trading apps.12SEC. SEC Rulemaking Activity Payment for order flow and app gamification were not restructured through rulemaking.
Keith Gill’s Legal Exposure
Keith Gill, the Massachusetts investor known online as “Roaring Kitty” who became the face of the WallStreetBets campaign, was sued in a class action in February 2021. Iovin v. Gill, filed in the District of Massachusetts, accused him of market manipulation by using his social media presence to drive up GameStop’s price while concealing his background as a licensed securities professional. The complaint also named his former employer, MassMutual, as a defendant for alleged failure to supervise.13ClassAction.org. Iovin v. Keith Patrick Gill et al., Complaint
Gill resurfaced on social media in June 2024 and disclosed a $116 million GameStop position, triggering another 21% stock surge. Massachusetts securities regulator William Galvin confirmed an investigation into Gill’s trades; the SEC said only that it does not comment on the existence of investigations.14ThinkAdvisor. Roaring Kitty GameStop Trades Under Investigation in Mass A separate suit filed that month, Radev v. Gill, was voluntarily dismissed by the plaintiff three days after filing.15Fortune. GameStop Stock Investor Lawsuit Dropped Against Keith Gill As of mid-2026, no SEC enforcement action against Gill has been publicly announced.
The Influencer Pump-and-Dump Case
A separate prosecution grew out of the same era of viral stock trading. In December 2022, the SEC and the Department of Justice charged eight social media influencers who had built large followings on Twitter and Discord. Prosecutors alleged the group — Perry Matlock, Edward Constantin (@MrZackMorris), Thomas Cooperman, Gary Deel, Mitchell Hennessey, Stefan Hrvatin, John Rybarczyk, and Daniel Knight — ran a pump-and-dump scheme operating since at least January 2020 that generated more than $100 million in illicit profits by promoting stocks to followers while secretly dumping their own shares.16CNBC. SEC Charges Social Media Influencers in Alleged $100 Million Fraud Scheme17SEC. SEC v. Edward Constantin et al., Litigation Release No. 25591
In March 2024, U.S. District Judge Andrew S. Hanen in the Southern District of Texas dismissed the criminal charges against all seven defendants who had gone to trial, ruling that the government failed to state an offense because the defendants “did not deprive investors of their money or property through any misrepresentation.”18Variety. Securities Fraud Charges Dropped Against Social Influencers Daniel Knight, the eighth defendant, had pleaded guilty to securities fraud in March 2023 under a plea deal. A new trial for the seven acquitted defendants is listed for May 2027 on the DOJ docket.19DOJ. United States v. Constantinescu et al.
Andrew Left’s Conviction
The biggest criminal result from the viral trading era belongs to Andrew Left, founder of short-selling firm Citron Research. Citron had been one of the most prominent voices betting against GameStop before the squeeze, but the charges against Left were not about GameStop. Prosecutors said that from March 2018 to October 2023, Left published stock commentary on his website and social media, then took trading positions opposite to what he publicly recommended, often using short-dated options to profit from the immediate price swings his own pronouncements caused. He concealed financial relationships with hedge funds and misrepresented his trading positions in media appearances, the government alleged.20DOJ. Founder of Citron Research Found Guilty of Scheming to Manipulate Stock Market
On June 1, 2026, after a 15-day trial in the Central District of California before Judge Virginia A. Phillips, a jury found Left guilty of one count of securities fraud scheme and 12 additional counts of securities fraud. He was acquitted on four counts tied to specific companies.21CNBC. U.S. Jury Finds Investor Andrew Left Guilty of Securities Fraud Prosecutors estimated he earned at least $21 million from the scheme.20DOJ. Founder of Citron Research Found Guilty of Scheming to Manipulate Stock Market Left faces a statutory maximum of 25 years on the lead charge and up to 20 years on each remaining count. Sentencing is scheduled for August 31, 2026, and he has indicated he intends to appeal.22The Wall Street Journal. Prominent Short Seller Andrew Left Convicted of Fraud
The SEC filed a parallel civil enforcement action against Left and his firm, Citron Capital, in July 2024, alleging a $20 million fraud scheme. That case remains active in the Central District of California, with the government seeking a stay of discovery while the criminal case proceeds.23CourtListener. SEC v. Andrew Left, Docket