AI Memory Price Hikes Spark Antitrust Lawsuit: Samsung, SK Hynix, and Micron Accused of Collusion
N.R. Finch
U.S. consumers have filed a proposed class action against Samsung, SK Hynix, and Micron, alleging the three conspired to cut standard DRAM output and drove prices up roughly 700% over four years. Together they hold about 90% of the global DRAM market — if the case advances, it will redefine where pricing power ends and collusion begins.
What exactly are the plaintiffs alleging?
The plaintiffs are indirect buyers of standard DRAM and DRAM-containing products. Their core claim: all three chipmakers used HBM — high-bandwidth memory, the premium memory built for AI chips — as a pretext to simultaneously cut DDR3 and DDR4 production, artificially squeezing supply.
This means → the roughly 700% price surge in commodity DRAM was not driven by demand — it was driven by a supply side that was deliberately narrowed.
The plaintiffs also cite Apple's iPad and Mac price increases as downstream evidence. Put simply = memory got more expensive, so the tablets and laptops you buy got more expensive too.
Does "everyone raised prices at the same time" equal collusion?
Bloomberg notes that all three vendors pivoting to HBM is logically consistent with independent business decisions — HBM carries stronger demand and higher margins, so any rational supplier would make the same move.
U.S. courts typically require evidence beyond "parallel conduct" — such as records of information exchange or signs of a direct agreement. Synchronized price increases alone are not enough.
This reflects the hardest bar to clear in antitrust litigation: synchronization ≠ conspiracy. The plaintiffs must prove the companies coordinated, not that each independently made the same rational call.
Why does history make this case especially sensitive?
A similar class action in 2018 was dismissed; the court ruled the behavior more likely stemmed from legitimate competition. That precedent raises the evidentiary bar for the current plaintiffs.
But Bloomberg cites records showing Samsung and SK Hynix pleaded guilty in 2005 to DRAM price-fixing between 1998 and 2002, paying class-action fines and private settlements.
This means → the prior conviction does not prove today's allegations, but it keeps courts and markets on higher alert about whether these companies might reoffend.
How is the price pressure reaching EVs and consumer electronics?
Chinese industry sources report that automakers face a double cost squeeze: rising memory chip prices plus a rebound in lithium carbonate costs. Some manufacturers see per-vehicle costs climb by roughly RMB 15,000 to 20,000.
At the same time, end-market competition is fierce — 36Kr reports 550 new models launched in China's passenger-car market from January to May, while May retail sales fell 22.1% year-on-year.
In plain terms = upstream memory costs are rising, downstream prices cannot follow, and automakers are caught in between with shrinking margins.
What will ultimately decide this case?
The central question: can the plaintiffs uncover direct coordination evidence beyond "parallel conduct" — such as communication records between vendors or capacity-allocation agreements?
Without clearing that evidentiary bar, historical precedent suggests limited odds of success.
Yet the lawsuit's mere existence is enough to force markets to re-examine a basic question: when three companies control 90% of a market, where exactly is the line between "independent business decisions" and "coordinated behavior"?
Content is for reference only, not financial advice.