Mon Sep 15 08:40:00 UTC 2025: Okay, here’s a news article summarizing the text, formatted for news presentation:

**China Investigates Nvidia for Alleged Anti-Monopoly Violations, Shares Dip**

**Beijing, China** – China’s market regulator, the State Administration of Market Regulation (SAMR), announced Monday that a preliminary investigation has found U.S. chip giant Nvidia in violation of Chinese anti-monopoly laws related to its 2020 acquisition of Mellanox Technologies. Shares of Nvidia fell roughly 2% in premarket trading following the announcement.

The SAMR stated it would continue its investigation into Nvidia, focusing on agreements made during the Mellanox acquisition. The deal, which was approved by China in 2020 with specific conditions, is now under scrutiny for alleged breaches of those conditions and violations of China’s anti-monopoly regulations. The SAMR did not specify the exact nature of the alleged violations.

CNBC has reached out to Nvidia for comment.

The timing of the SAMR announcement has the potential to further complicate ongoing trade discussions between Chinese and U.S. officials, which began Sunday in Madrid. The investigation adds to growing tensions between Beijing and Washington on the technology front.

Over the weekend, China initiated two separate probes targeting the semiconductor industry: an anti-dumping investigation into certain chips imported from the U.S., and an anti-discrimination scrutiny of U.S. restrictions on China’s chip industry. These actions signal a potential escalation of trade tensions within the crucial semiconductor sector.

This is a developing story, and further updates will be provided as they become available.

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