Key points
- A federal class action, Garciaguirre v. Samsung Electronics, was filed June 25, 2026 before Judge Noel Wise, accusing Samsung, SK Hynix and Micron (MU) of conspiring to fix DRAM prices, which the suit says rose about 700% over four years.
- The complaint alleges the three began vetting customers and policing orders in January 2026 while shifting capacity to AI-focused HBM and exiting older DDR3 and DDR4 chips.
- These are allegations, not findings. A nearly identical 2018 case was dismissed and upheld on appeal in 2022. Samsung and SK Hynix paid $300M and $185M in criminal fines over a separate 1998-2002 DRAM conspiracy.
- Update, August 8, 2026: still no motion to dismiss, answer, ruling or settlement in the public record. Micron (MU) closed at $877.56 on August 7, down about 28% from its June 25 peak but up modestly from the July 28 close.
Update, August 8, 2026: There is still no motion to dismiss, no answer, no ruling and no settlement on the public docket, and no new court filings have surfaced in press coverage since Micron's July 21 disclosure statement. On the stock side, Micron (MU) closed at $877.56 on August 7, up modestly from the $820.25 close reported here on July 28 but still down roughly 28% from its $1,213.56 peak on June 25, the day the suit was filed. The recent swings in MU have tracked broader memory-sector and AI-capex sentiment far more than the litigation, which remains an unresolved legal overhang rather than a market-moving event.
Update, July 28, 2026: The case is formally styled Garciaguirre v. Samsung Electronics, docket 3:26-cv-06345, and sits before Judge Noel Wise in the Northern District of California. It names five entities rather than three: Samsung Electronics and Samsung Semiconductor, SK Hynix Inc. and SK Hynix America, and Micron. The 17 plaintiffs are represented by Bathaee Dunne LLP. Defense counsel has now appeared, with Micron filing its corporate disclosure statement on July 21 through Rachel Brass of Gibson Dunn. The docket had passed 50 entries by that date, and nearly all of it is procedural, being attorney appearances and pro hac vice admissions. Nothing substantive has landed yet, which means no motion to dismiss, no answer, no ruling and no settlement. SK Hynix has said the case is at an initial stage and that it intends to defend itself, and Micron has denied the claims. SK Hynix also carries the suit as a risk factor in the SEC filing for its Nasdaq listing, saying it cannot yet estimate a potential loss.
One point of confusion is worth clearing up. Headlines calling this the "third DRAM price-fixing lawsuit" mean the third such case historically, after the ones in 2006 and 2018. This is still the only active case, and no companion complaints have shown up in public court records since June 25.
The three companies that make almost all of the world's computer memory are being sued again, this time as RAM prices sit near record highs.
On June 25, 2026, a proposed federal antitrust class action was filed in the US District Court for the Northern District of California against Samsung Electronics, SK Hynix and Micron Technology (MU). The suit accuses the trio, which together control the vast majority of the global market for dynamic random access memory (DRAM), of conspiring to limit supply and inflate prices.
What the complaint alleges
It is important to be precise here: everything below is an allegation. None of it has been proven, the companies have not been found liable, and they have not yet responded in court.
According to the complaint, the memory makers "simultaneously cut production, coordinated a pivot to HBM and exit from DDR3 and DDR4, and otherwise decreased and locked up conventional DRAM supply" even as demand kept climbing, sending prices sharply higher. In plain terms, the plaintiffs claim the three deliberately throttled the supply of everyday memory chips, in part by shifting capacity toward the high-bandwidth memory (HBM) that AI data centers are scrambling for, and that this is what drove the price spike many shoppers have nicknamed the "RAMpocalypse." The filing also alleges the companies rehired and rewarded executives who served prison time for the DRAM price-fixing conspiracy of the early 2000s.
The complaint puts a number on that price spike: commodity DRAM prices have climbed roughly 700% over the past four years, according to the filing. It also alleges a specific mechanism starting in January 2026, when all three companies began vetting customers and policing orders, questioning buyers about who they were reselling to, how much memory they wanted, and whether their stated demand was even real.
The suit seeks class-action status on behalf of businesses and consumers who allegedly overpaid for products containing DRAM, from PCs and phones to servers, and asks for damages.
Why this keeps happening, and the catch
This is not the first time these names have been in the antitrust crosshairs. Samsung and SK Hynix both pleaded guilty to a criminal price-fixing conspiracy that ran from 1998 to 2002, paying $300 million and $185 million respectively and sending several executives to prison. The Justice Department's full DRAM investigation, which also caught Infineon and Elpida, produced more than $731 million in fines across four companies. The same three companies were also hit with another class action over a 2016 to 2017 supply squeeze. That track record is part of why plaintiffs keep filing.
Here is the catch, though: these cases are hard to win. A nearly identical case, filed in 2018 by the law firm Hagens Berman, made almost the same argument about coordinated production cuts. A district court dismissed it in 2020, and the Ninth Circuit Court of Appeals upheld that dismissal in 2022, ruling that the companies' conduct was "more likely explained by lawful, unchoreographed free-market behavior" than an illegal agreement. Coordinated supply discipline in a market with only three big players can look a lot like ordinary, legal business behavior, and proving an actual agreement to fix prices is a high bar. So a filing is a long way from a payout, and this new suit will need to clear the same bar that sank its predecessor.
What it means for the stocks
For investors, the practical read is narrow. Of the three, only Micron (MU) is a US-listed pure-play; Samsung and SK Hynix trade primarily in Seoul. A new lawsuit is a legal overhang and a headline risk, but historically these DRAM suits have done little to the share prices, especially right now, with memory stocks riding one of the strongest up-cycles in years on AI and HBM demand, even as that same memory trade sold off hard on July 16 amid separate concentration and pricing worries. The bigger story for the chips themselves remains that demand boom, which we broke down in our advanced packaging deep dive and the full AI stock map.
The bottom line: a serious-sounding lawsuit with real history behind it, but it is a set of unproven allegations at the starting line of a long legal fight, not a verdict. We will update this if the companies respond or the case moves forward.
Nothing here is investment advice. The claims described are allegations in a civil complaint and have not been proven in court. The companies have not been found liable. Do your own research.
This is general market commentary and opinion, not investment advice. Markets can go down as well as up, and you can lose money. Always do your own research and consider speaking with a licensed financial professional before making any investment decision.
