SK hynix Breaks Ground on $4B Indiana HBM Fab for U.S. AI Memory

SK hynix starts construction of its first U.S. HBM production base

SK hynix announced on August 28, 2026 that it held a groundbreaking ceremony the previous day in West Lafayette, Indiana, for an advanced-packaging facility focused on high-bandwidth memory (HBM) used in AI systems.

The company expects to invest more than $4 billion in the Indiana project. This is a construction milestone, not the start of commercial HBM output: SK hynix says the cleanroom is scheduled to open by October 2028 and mass production of next-generation HBM is planned for the second half of 2029.

That distinction matters because HBM is a critical memory technology for AI accelerators, but the announced U.S. capacity will not be available for several years.

How the Indiana operation is expected to work

SK hynix says cutting-edge wafers will continue to be produced in South Korea and then shipped to Indiana for advanced packaging and testing. Finished products from that process are intended to be supplied to U.S. customers as locally produced HBM.

The company also plans an Advanced Packaging R&D Testbed alongside the production lines so customers, universities and business partners can develop packaging technologies, build prototypes and validate performance.

At the groundbreaking, SK hynix signed an MOU with Purdue University covering research in system integration and advanced packaging, including HBM.

Scale, suppliers and employment

SK hynix says more than 100 companies are being considered as materials, components and equipment suppliers for the West Lafayette facility. It projects approximately 7,000 direct and indirect jobs across construction and commercial operations and expects roughly 1,000 personnel during commercial operation.

Those employment figures and future production dates are company projections. SK hynix's own release includes a forward-looking-statement disclaimer, so they should not be read as guaranteed outcomes.

Why this matters for AI infrastructure

AI accelerators depend on very high memory bandwidth, making HBM capacity and advanced packaging strategic constraints in the data-center supply chain. The Indiana project is therefore notable less as a new AI chip than as new planned U.S. infrastructure around one of the most constrained components used by modern AI systems.

The project also links U.S. packaging and testing with SK hynix wafer production in Korea, creating a cross-border production chain rather than a fully self-contained U.S. semiconductor fab.

Released now versus upcoming

Available now: the project has formally broken ground, the Purdue collaboration has been announced, and supplier/ecosystem development is underway.

Upcoming: the cleanroom is targeted for October 2028 and next-generation HBM mass production for the second half of 2029. Those milestones have not yet been reached.

For AI infrastructure teams, the key signal is future capacity: SK hynix is committing substantial capital to bring advanced HBM packaging and testing closer to major U.S. AI customers, but the supply impact will depend on successful construction, qualification and ramp-up over the next several years.