Amkor Technology, one of the world’s largest outsourced chip assembly and testing firms, is weighing a sale of a stake in its China operations, a deal that could value the unit at between $1bn and $1.5bn, according to Bloomberg.
The Arizona-based company, which has been pouring record sums into advanced packaging, has engaged an adviser to prepare a carveout and gauge buyer interest, though anyone expecting a firm announcement should note that talks remain preliminary and, in the careful phrasing of people familiar with them, no decisions have been made.
The unit in question is no minor outpost. Amkor established its Shanghai presence in 2001 and expanded three years later by acquiring a semiconductor facility in the city from IBM, building up an operation that handles the unglamorous but essential work of assembling and testing chips once they leave the fab.
That work, known in the trade as outsourced semiconductor assembly and testing, or OSAT, sits at the tail end of the manufacturing process, yet it has grown into one of its most consequential steps.
Selling part of the business would let Amkor keep a minority stake while handing day-to-day ownership to someone else, a structure that neatly captures the mood of the moment.
That mood is one of quiet retreat. Multinationals have spent the past few years reassessing how much of their business should sit inside China, and semiconductors, caught squarely in the crossfire of Washington’s export controls and Beijing’s countermeasures, are the most exposed of all.
Peeling a China arm off into a separately owned entity is one way to lower the geopolitical temperature without abandoning a market that still buys an enormous share of the world’s chips.
Who might buy in remains an open question, yet the likely bidders are Asian investment firms and industry players rather than Western strategics, which would themselves face scrutiny for taking a large position in Chinese chip infrastructure.
Bloomberg cautions that the details, valuation included, are subject to change, and that the whole process could still come to nothing. Even so, the fact that Amkor has hired an adviser suggests the idea is being taken seriously.
It is also part of a much larger pattern that the industry has taken to calling de-risking.
From carmakers to cloud providers, Western firms have been carving their Chinese arms into standalone units or selling down stakes altogether, all to insulate their global businesses from whatever the next round of restrictions brings.
For a company whose factories are among the most strategically sensitive links in the chain, the logic is only sharper.
In July the company signed a $1.5bn multiyear agreement with Nvidia to develop advanced packaging and testing for the next generation of AI and accelerated-computing chips, and it is building a sizeable advanced-packaging plant in Arizona to do much of that work on American soil.
Set against a possible $1bn-plus exit from China, the direction of travel is hard to miss.
Packaging, once an afterthought, now sits close to the centre of the AI chip race. As transistors stop shrinking as reliably as they once did, stitching multiple dies together into a single high-performance package has become one of the few remaining ways to keep pushing performance, which is why firms that specialise in the step suddenly find themselves courted rather than overlooked. Whoever controls that stage controls a genuine bottleneck.
For now, Amkor is doing what a growing number of Western technology companies are doing, which is to hedge.
The escalating chip war between the United States, Europe, and China has turned supply-chain geography into strategy, so separating a Chinese business from an American one reads less as a bet on either side than as an admission that keeping both under one roof has become a liability.
Get the TNW newsletter
Get the most important tech news in your inbox each week.