ASMI shares tumble after 'a bit unexpected' H2 guidance cut

** Dutch chip equipment maker ASM International ASMI.AS shares fall about 4%, paring earlier losses of about 6%, following H2 guidance cut

** The company anticipates revenue to decline by 5% to 10% compared to H1, citing weaker-than-expected demand

** Degroof Petercam analyst Michael Roeg says the weaker guidance may reflect issues with the company's significant customers, including Intel INTC.O and Samsung 005930.KS

** "The lower 2025 guidance is a bit unexpected but not unreasonable," KBC Securities says, adding it continues to see short-term headwinds for the whole WFE market driven by normalising demand from China

** Until Monday's close, ASMI shares lost about 10.5% in value YTD; they closed 2024 18.9% higher

** The stock is sitting at the bottom of Amsterdam's blue-chip index .AEX

** ASMI's larger peer ASML ASML.AS slips 1.2%