For years, SK Hynix was the other Korean chipmaker - the one always a step behind Samsung.
That just stopped mattering. SK Hynix is now worth more than $1 trillion - the second Korean company to clear that bar, after Samsung hit the milestone earlier this month.
The reason fits in one acronym.
The HBM Bet That Took A Decade To Pay Off
HBM stands for high bandwidth memory. It's the specialized chip that sits right next to an AI processor and feeds it data fast enough to keep up.
Nvidia's AI chips don't work without it, and SK Hynix makes more of it than anyone else.
While Samsung defended its lead in regular memory, SK Hynix poured money into HBM early. That bet looked questionable for years.
Now it's the whole story.
We break down the AI plays Wall Street is actually buying in Market Briefs - five minutes a day, plus a free investing masterclass when you join.
Why Memory Is The Real AI Choke Point
Everyone talks about Nvidia. But Nvidia's chips need memory to actually do anything - and the supply is tight.
Think of it like a race car - the engine gets all the headlines. Without a fuel system to deliver gas fast enough, the engine sits idle.
HBM is the fuel system for AI - and SK Hynix has locked in long-term deals with most of the big AI buyers, with supply reportedly sold out through next year.
Worth Noting
Samsung is racing to catch up, and Micron is gaining ground. A $1 trillion valuation assumes SK Hynix holds that lead - which is not guaranteed.
But for now, the company that spent a decade in second place is the one investors are paying up for - because the chip nobody wanted to make is the chip nobody can get enough of.
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