European shares slide as Apple margin warning trigger global tech rout

European shares declined and global technology stocks sold off after Apple issued a margin warning, according to the headline. The transmission runs through earnings expectations for mega-cap technology: a guidance cut from a company of Apple's weight reprices forward profit estimates across the sector, and because Apple carries heavy index weight, the hit feeds directly into benchmark valuations and risk appetite. Nasdaq 100 futures are most directly exposed given Apple's large weighting in the index, while European equities are exposed through sentiment spillover and any European exposure to the US tech supply chain and consumer-electronics demand. Apple itself faces the most direct repricing, as margin pressure signals either cost inflation or weakening pricing power, both of which weigh on multiple expansion. Traders will watch the next US CPI release and the Nasdaq 100's reaction at the following cash open to gauge whether the selloff is contained to tech or broadens into a rate-sensitive growth rotation.

The Nasdaq-100 (NDX) is the US large-cap tech benchmark. NDX is more sensitive to rate decisions than SPX because of longer-duration cash flows, and heavily concentrated in Tech/Comms names — mega-cap earnings season dominates price action.

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