[8] State-owned civilian and military telecommunications equipment provider Datang Telecom Group as well as the China Integrated Circuit Industry Investment Fund are major shareholders of SMIC.

[17] In response to US sanctions on the Chinese chip industry in the early 2020s, SMIC started on a wave of expansion in the form of joint ventures with China's state semiconductor fund.

[20] In September 2003, SMIC raised $630 million in funding from investors, including: Walden International (a venture capital firm based in San Francisco, California), Oak Investment Partners, Temasek and others.

[23] On October 14, 2016, Ningbo Semiconductor International Corporation was jointly established by China IC Capital (the wholly owned investment fund of SMIC), Ningbo Senson Electronics Technology Co., Ltd, and Beijing Integrated Circuit Design and Testing Fund with a registered capital of RMB355 million, equal to US$52.8 million.

[30] On May 24, 2019, SMIC announced it would voluntarily delist from the New York Stock Exchange (NYSE), citing low trade volumes.

The liability phase of the lawsuit began on September 9, 2009, in Oakland, California,[40] and the jury found SMIC liable on 61 out of 65 claims.

[42] In September 2020, the United States Department of Commerce declared SMIC a military end-user and required that American technology companies dealing with it obtain a license.

[45] In December 2020, the United States Department of Commerce added SMIC to the Bureau of Industry and Security's Entity List.

TechInsights had stated in 2022 that it believed SMIC had managed to produce 7 nm chips, even though faced by a harsh sanctions regime, by adapting simpler machines that it could still purchase from ASML.

[48] Holger Mueller of Constellation Research Inc. said that this showed that the US sanctions might have had the effect of sending China's chip-making industry into overdrive.”[49] In 2023, with the release of Huawei's Mate 60 Pro, a phone that contained a chip that may violate current trade restrictions, U.S.

Congressman Mike Gallagher said that, "U.S. Commerce Department should end all technology exports to Huawei and China's top semiconductor firm following the discovery of new chips in Huawei phones," and that, "this chip likely could not be produced without US technology and thus SMIC may have violated the Department of Commerce’s Foreign Direct Product Rule.

[57][58] In February 2024, the Financial Times reported that SMIC is on track to mass-produce logic chips equivalent in performance to the 5 nm process node later in 2024; additional reports speculated that the 5 nm chips will be manufactured via stockpiled ASML "deep ultra-violet" (DUV) immersion lithography machines.

[59][8] According to a Chinese patent granted in late 2023 to a company working with Huawei Technologies, certain transistors and interconnects feature sizes seen on chips in the 5 nm-node can be obtained using DUV immersion machines and a technique called "self-aligned quadruple patterning" (SAQP).