On July 17, Rambus fell 5.31% in pre-market trading, trading at $96.56/share, with turnover of $110,100. The decline reflects continued fallout from a Korean antitrust raid and persistent pressure across the memory and semiconductor sectors.

On July 15, the Seoul Central District Prosecutors Office Fair Trade Investigation Division simultaneously raided the Korean offices of Rambus, Montage Technology, and Renesas Electronics on suspicion of colluding to fix prices of memory interface chips in violation of Korea's Fair Trade Act. Prosecutors seized employee phones, business contracts, and internal communications. The three companies collectively hold over 93% of the global DDR5 memory interface chip market, with Rambus commanding approximately 20.5% share. Samsung Electronics and SK Hynix are key customers.

This Korean investigation follows an earlier US DOJ criminal probe launched in January, during which Rambus disclosed in April receiving a federal grand jury subpoena related to suspected price-fixing. The dual US-Korea regulatory encirclement has intensified market concerns. Across the broader semiconductor sector, Micron Technology fell 4.32%, NVIDIA declined 3.20%, AMD dropped 4.93%, Intel fell 4.89%, and TSMC declined 5.01%.

(The above content is based on publicly available market information, generated by a program or algorithm, and is intended solely as a stock movement alert. It does not constitute investment advice or a basis for trading decisions.)