US tech firms from Microsoft Corp. to Meta Platforms Inc. are allocating about $650 billion this year for infrastructure that gives them an edge in the race to build AI technologies. That record spending is causing a global shortage of memory chips, a market that’s dominated by SK Hynix, its South Korean peer Samsung Electronics Co., and US-based Micron Technology Inc. SK Hynix has sold out its entire slate of memory chips in 2026, while Micron has done similarly with its HBM offerings.







