Apple (NASDAQ:AAPL) suppliers tumble after Trump warns of 25% tariff on non-U.S. iPhones.

Stocks of key iPhone component makers slid as President Donald Trump said Apple must pay a 25% tariff on devices not made in the United States, rattling markets and sending suppliers sharply lower premarket.

Shares of Broadcom (NASDAQ:AVGO) and Qualcomm (NASDAQ:QCOM) each dipped about 2%, while antenna-tuner makers Qorvo (NASDAQ:QRVO) and Skyworks Solutions (NASDAQ:SWKS) fell roughly 3% apiece. Analog Devices (ADI) also slid nearly 3%, and contract manufacturer Jabil (NYSE:JBL) lost about 1%. Apple itself dropped about 3% ahead of the opening bell.

Trump's post on Truth Social reiterated his push for U.S. production, warning Tim Cook that at least a 25% tariff would apply if iPhones aren't built domestically rather than in India or elsewhere. That follows his earlier urging this month for Apple to halt facility plans in Indiaa key growth market.

CFO Luca Maestri had flagged supply-chain risks in yesterday's Q2 call, noting rising costs and geopolitical headwinds; today's announcement adds a fresh layer of uncertainty.

Meanwhile, Foxconn Technology (HNHPF) bucked the trend with a 1% gain in Taiwan after reports it's eyeing a $3 billion bid for UTAC Holdings, a Singapore-based semiconductor assembleran acquisition that could bolster its contract-manufacturing scale.

Why It Matters: Investors should weigh the risk of disrupted supply chains and potential cost hikes against growth in emerging markets, as the tariff threat could narrow margins across Apple's supplier network.

This article first appeared on GuruFocus.

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