3 hours ago
14
South Korean regulators raided the offices of Chinese chipmaker Montage Technology on July 15 as part of a sweeping competition investigation into alleged price-fixing of memory interface chips. The probe also targeted offices of Japan’s Renesas Electronics and US-based Rambus, signaling that authorities believe the suspected collusion may span multiple continents.
The investigation centers on whether these three companies coordinated pricing on components supplied to the world’s largest memory manufacturers, including Samsung Electronics, SK Hynix, and Micron.
What happened and why it matters
South Korean authorities allege the companies may have violated the country’s Fair Trade Act by colluding on prices for memory interconnect chips.
Montage Technology holds a 36.8% share of the global market in memory interconnect chips by revenue as of 2024. Montage’s shares dropped approximately 23% in Hong Kong trading after the news broke. Shanghai-listed shares fell 16.4%.
South Korea accounted for 2.93 billion yuan, roughly $432.63 million, of Montage’s sales in fiscal 2025. That figure represents more than 50% of the company’s total revenue.
Montage confirmed it is fully cooperating with the ongoing investigation. No charges have been brought against the company’s directors or employees as of July 16. The probe remains in its early stages.
A pattern of semiconductor scrutiny
The US Department of Justice launched its own price-fixing investigation into the memory chip sector back in January 2026. South Korea’s probe fits within a broader, global pattern of regulators turning their attention to how semiconductor companies price and distribute their products.
Montage Technology, founded in 2004, has grown into one of the most important suppliers of chips that serve as the connective tissue inside servers.
South Korea has particular motivation to pursue this aggressively. Samsung Electronics and SK Hynix are two of the three largest memory chip manufacturers on earth. If these companies were paying inflated prices for interface chips due to supplier collusion, the economic impact would ripple through South Korea’s most strategically important industry.
What this means for investors
For Montage specifically, losing access to or facing penalties in a market that generates more than half its revenue would fundamentally alter the company’s financial trajectory.
Investors watching this space should track whether the South Korean investigation produces formal charges or settlement discussions, and whether the parallel US DOJ investigation coordinates with South Korean authorities.
The semiconductor industry’s last major price-fixing scandal, involving DRAM manufacturers in the mid-2000s, resulted in billions of dollars in fines and criminal charges against individual executives.
Disclosure: This article was edited by Editorial Team. For more information on how we create and review content, see our Editorial Policy.
English (US) ·