Not long after Shenzhen-based Huawei unveiled what it described as a breakthrough pathway for advanced semiconductor production at the recent IEEE ISCAS conference, the Trump administration raised concerns that one of Dutch chip-equipment giant ASML's extreme ultraviolet lithography, or EUV, machines may have fallen into Chinese hands.

Bloomberg reports that Commerce Secretary Howard Lutnick has raised concerns that one of ASML's EUV machines may have reached China despite US-led export controls.

ASML has pushed back on Lutnick's suggestion, explaining that none of its EUV machines, used to print the tiniest circuit patterns onto advanced computer chips, have ended up in the hands of the Chinese. This report is based on sources from the outlet who spoke on condition of anonymity to describe private conversations.

ASML says all 314 of its operating EUV machines are accounted for globally.

More color from the outlet:

The dispute adds pressure on ASML, with shares in Amsterdam trading down as much as 2% on Friday. Shares have advanced as much as 81% this year due to the AI and data center buildout narrative.

Here is Citi analyst Andrew Gardiner's first take on the US Government-ASML dispute:

Bloomberg Intelligence analyst Masahiro Wakasugi comments:

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US concerns may reflect China's progress in developing advanced chips, especially after Huawei's announcement last month of a potential breakthrough in semiconductor production.