Micron Technology stock went parabolic last week, rising 15% in a single session on May 8. Over the last five trading sessions, the chip stock has risen almost 40% and returned 137% year-to-date.
Valued at amarket cap of $729 billion, Micron (MU) is among the largest semiconductor companies in the world.
In 2026, it continues to benefit from the AI megatrend and a deepening shortage of memory chips.
According to a CNBC report, Micron stock posted its best week since December 2008. At that time, MU stock was priced at just $5. Today, it trades around $747.
It means a $1,000 investment in MU stock back in late 2008 would be worth more than $262,000 today.
Memory chip crunch is a tailwind for Micron stock
There are two main types of memory used in artificial intelligence systems.
- Dynamic random access memory, or DRAM, is the fast, high-performance kind used inside AI processors to handle active computations.
- NAND flash memory is slightly slower but more durable, and it’s used for storage in solid-state drives, or SSDs.
- Both are essential to building AI data centers. Every time a hyperscaler like Amazon, Google, or Microsoft adds more AI capacity, they need more of both.
Micron, Samsung, and SK Hynix together control more than90% of global DRAM supply. That gives each of them enormous pricing power during a shortage, and right now, that shortage is severe.
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Micron isn’t the only chipmaker benefiting. In fact, the entire sector is getting swept up in a wave of enthusiasm tied to AI infrastructure spending, which Bank of America and Evercore now estimate could surpass $1 trillion by the end of 2027.
What Micron’s earnings call revealed
During Micron’s fiscal second-quarter 2026 post-earnings analyst call, Chief Business Officer Sumit Sadana made something clear: demand is so far ahead of supply that even aggressive investment can’t close the gap quickly.
Sadana stated:
“Our supply is nowhere close to being able to meet the demand that we see for the foreseeable future.”
On the DRAM side, new manufacturing facilities the company has announced, including a new Idaho shell and a recently acquired fab in Tongluo, Taiwan, won’t meaningfully contribute to supply until Micron’s fiscal 2028.
The company broke ground on a new cleanroom in Singapore, but that capacity also won’t come online until the second half of 2028.
In the meantime, prices keep rising. During the fiscal second quarter, both DRAM and NAND prices increased sharply, with NAND rising even faster than DRAM. Volume grew for both, with DRAM outpacing NAND.
Micron flagged one increasingly important demand driver that’s worth watching: KV cache.
Large AI language models temporarily store data during inference, a process called KV caching, and this requires large, fast SSDs.
Micron said this is becoming a meaningful growth driver for its data center SSD business, in addition to existing demand from the broader AI buildout.
Related: Micron CEO drops a bombshell after Micron’s huge earnings beat
The demand side of this story isn’t slowing down either.
The major hyperscalers all raised their capital spending plans after their most recent earnings calls.
- Alphabet’s2026 capex estimate rose to $185 billion, while Amazon expects to spend $200 billion.
- Meta lifted its capex forecast by 8% to $145 billion, and CEO Mark Zuckerberg specifically cited memory pricing as a reason for the higher estimate.
- Microsoft also increased its spending plans by 24%, to $190 billion.
What this means for MU stock investors
The bull case for Micron is simple. Supply is constrained, demand is accelerating, and new capacity is a few years away.
Chief Financial Officer Mark Murphy said on the earnings call that the company has the option to modulate tool installations, essentially adjusting how fast it fills new fabs with equipment, if demand shifts. But for now, management is investing aggressively.
Capital expenditure for fiscal 2026 is now expected to exceed $25 billion, up from the $20 billion the company guided to just last quarter. Fiscal 2027 construction spending is projected to rise by roughly $10 billion more.
The bigger question for investors is how long this cycle lasts and whether AI capital spending continues at this pace.
Sadana was direct on that point too: the company has assessed five-year demand from several major customers and still can’t pinpoint when supply will finally catch up.
“We don’t have a high confidence view yet as to when the supply will be able to catch up with demand because the escalation of demand from these various vectors is just very phenomenal,” he said.
For now, the shortage is real, Micron’s position is strong, and Wall Street is paying very close attention.
