The article discusses the impact of China’s antitrust investigation on Nvidia’s stock price and its proposed acquisition of Mellanox Technologies. Key points: 1) Nvidia’s stock fell over 1% after reports that China’s antitrust regulator is conducting an investigation into the company’s proposed $6.9 billion acquisition of Mellanox. 2) The investigation is focused on whether the deal could lead to price hikes or other anti-competitive practices in the chips market. 3) Nvidia and Mellanox are both major suppliers of chips used in data centers, and the deal would create a company with a significant market share. 4) The investigation adds uncertainty to the deal’s timeline, as Nvidia had expected to close the acquisition in early 2020. 5) Analysts believe the deal will likely be approved, but may face conditions or remedies from regulators.