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@Kundenservice the share was split there is no new ISIN see https://www.finanzen.ch/aktien/lam_research-aktie it is the same ISIN only with /10 price. If you go to 3 months you can also see the split
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@Sua7 Have a look here:
https://www.xetra.com/xetra-de/newsroom/xetra-newsboard/XETR-ISIN-Change-4135274

New listing at $LRCX and the old listing has been removed from the stock exchange $LRCX