What Happened to Samsung, SK Hynix, Micron Price-Fixing Lawsuit?

The world's leading memory chip manufacturers, Samsung Electronics, SK Hynix, and Micron Technology, are once again embroiled in a significant legal battle over alleged price-fixing. On June 25, 2026, a new class-action lawsuit was filed in the U.S. District Court for the Northern District of California by a group of consumers and small PC businesses. The complaint alleges that these three companies, which collectively control approximately 90-91% of the global DRAM market, engaged in a "coordinated scheme" to restrict the supply of conventional Dynamic Random-Access Memory (DRAM), specifically DDR3 and DDR4, thereby driving up prices by an estimated 700% over the past four years.

This is not the first time these industry giants have faced such accusations. In the early 2000s, the U.S. Department of Justice launched a probe into DRAM price-fixing, which resulted in guilty pleas from Samsung, SK Hynix (then Hynix Semiconductor), Infineon, and Elpida. Samsung paid a $300 million fine, and SK Hynix paid $185 million, with several executives serving prison sentences. Micron Technology avoided fines by cooperating with the Department of Justice and reporting the cartel. The European Commission also fined several memory manufacturers, including Samsung and Hynix, in 2010 for their involvement in the cartel.

The core of the current lawsuit's allegations centers on the companies' strategic shift towards High Bandwidth Memory (HBM), a higher-margin DRAM used extensively in AI accelerators for data centers. Plaintiffs contend that this transition was used as a "cover" to deliberately curtail the production of commodity DRAM for consumer electronics. The complaint highlights that while demand for HBM exploded, the companies simultaneously cut production of older DDR3 and DDR4, and in some cases, even exited conventional DRAM supply channels. Micron's 2025 decision to shutter its consumer sub-brand Crucial, allegedly at a highly profitable point, is cited as an example of this coordinated supply reduction.

The lawsuit, filed under case number 3:26-cv-06345 and assigned to Judge Noel Wise, invokes various antitrust laws, including the Sherman Act, the Cartwright Act, and state-specific deceptive trade practices acts. It seeks to represent a broad class of consumers and businesses affected by the alleged price manipulation, requesting an injunction to halt the alleged anticompetitive practices and treble damages. This case draws parallels to a previous class-action lawsuit filed in 2018 concerning alleged price-fixing from 2016-2017, which was dismissed in 2020 and upheld by the Ninth Circuit in 2022, with the court ruling that the conduct was more likely explained by lawful market behavior. However, the new complaint leverages the coordinated HBM pivot as additional evidence that the earlier lawsuit lacked.

As of June 30, 2026, the companies have not yet issued official comments in response to the new lawsuit. Market analysts, such as Jefferies, project that DRAM prices could continue to rise significantly through 2027, with some forecasts suggesting no meaningful relief before 2028, largely due to persistent HBM demand. The plaintiffs argue that the oligopolistic structure of the DRAM market, where the cost of building new fabrication plants is tens of billions of dollars and takes years, prevents new entrants from challenging the dominance of Samsung, SK Hynix, and Micron, thus allowing them to dictate supply and pricing.