By the looks of it, this is major news and a big escalation of the US China "trade" war. But I notice this:
"TSMC shares in Taiwan were down more than 2% in Monday morning trade, while the benchmark index was down less than 1%."
So the market seems to think that is probably not such a big deal or guesses that a solution/workaround will be found. Also that the US may cut-off TSMC supplies to Huawei has been rumoured for about a year now and is an extension of the restrictions on Google software/services and the ARM chip designs.
"TSMC shares in Taiwan were down more than 2% in Monday morning trade, while the benchmark index was down less than 1%."
So the market seems to think that is probably not such a big deal or guesses that a solution/workaround will be found. Also that the US may cut-off TSMC supplies to Huawei has been rumoured for about a year now and is an extension of the restrictions on Google software/services and the ARM chip designs.