What Happened?
Shares of analog chips maker onsemi (NASDAQ: ON) fell 7% in the pre-market session after China imposed a 34% tariff on all U.S. imports amid escalating trade war tensions. This was especially rough for the US chipmakers because a big chunk of their business leans on demand out of China. The new tariffs not only threaten to erode profit margins but also risk reducing market share.
Adding to the uncertainty, the Trump administration signaled the possibility of further regulatory action against the sector. Although semiconductor firms were notably excluded from the broad tariffs unveiled on April 2, 2025, their exclusion raised concerns that targeted restrictions could still be forthcoming.
The shares closed the day at $33.70, down 5.3% from previous close.
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What The Market Is Telling Us
onsemi’s shares are very volatile and have had 26 moves greater than 5% over the last year. In that context, today’s move indicates the market considers this news meaningful but not something that would fundamentally change its perception of the business.
The previous big move we wrote about was 1 day ago when the stock dropped 11.3% on the news that President Trump announced "reciprocal tariffs" on all US imports, set at a minimum rate of 10%. From clothing brands and electronics makers to the e-commerce sites that move their goods, companies built on global supply chains took the biggest hit. Stocks with heavy exposure to Asia were especially hard-hit, as the new tariffs threatened the growth and profits of firms with factories in the region. Vietnam, central to many companies' production plans, faced a 46% tariff. Cambodia and Indonesia were also in the crosshairs, with tariff rates of 49% and 32%. These measures could significantly erode the competitiveness of goods produced in those regions. For example, reduced production volumes would negatively affect the sales growth of all companies benefiting from these manufacturing hubs.
onsemi is down 45.4% since the beginning of the year, and at $33.70 per share, it is trading 57.2% below its 52-week high of $78.74 from July 2024. Investors who bought $1,000 worth of onsemi’s shares 5 years ago would now be looking at an investment worth $2,618.
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