Shares of US semiconductor giants fell collectively in recent days, with NVIDIA falling 3%, AMD falling 3.4%, and Qualcomm and Xilinx both falling by about 0.5%. The reason is a U.S. review of Huawei.

According to the "Wall Street Journal" report, the US Department of Justice is investigating whether Huawei has violated Iran's sanctions order. This is a new review of Huawei's national security concerns for Huawei. It is unclear to what extent the U.S. Department of Justice’s investigation has advanced, and it is not known which specific allegations the U.S. agents have investigated Huawei.

Informed sources said that before the U.S. Department of Justice launched a criminal investigation against Huawei, the U.S. Department of Commerce and the Overseas Assets Control Office under the Ministry of Finance had issued an administrative summons to Huawei on sanctions-related issues. It is worth noting that the investigation by the US Department of Justice had not been publicly reported before, and the criminal investigation means that there may be a more serious degree of possible violations by Huawei, which may be subject to severe administrative penalties and regulatory sanctions.

Huawei has not yet responded to this news, but the impact has quickly become apparent. After the news was announced, the share prices of the US semiconductor giants fell.