Via purepng.com
Shares fell over 8% as a sector-wide selloff erased more than $1 trillion in market cap from major semiconductor names
Micron Technology joined a broad semiconductor retreat on July 28, 2026, with shares dropping more than 8% in a single session. The selloff swept across the chip sector, pulling down SK Hynix, Sandisk, Nvidia, AMD, and TSMC in what amounted to one of the more jarring single-day corrections the AI trade has seen after a historically strong run.
The PHLX Semiconductor Index, which tracks the sector’s major players, fell more than 3% on the same day. When you add up the damage across the biggest names, the July correction wiped out more than $1 trillion in combined market capitalization.
What triggered the selloff #
The proximate cause was profit-taking. Micron’s own shares had gained more than 200% year-to-date heading into the pullback, trading near the $950 to $1,000 range as of mid-August 2026.
Beyond profit-taking, the market was quietly asking a harder question: how long can the AI capital expenditure cycle actually sustain this pace? Major tech companies have been pouring money into data center buildouts, and the July correction reflected a moment of collective recalibration, with investors reassessing whether the pace of AI infrastructure investment could hold up under broader economic scrutiny.
SK Hynix dropped more than 8% alongside Micron. Sandisk fared worse, shedding more than 13%.
The underlying business remains strong #
Micron reported fiscal Q3 revenue of $41.46B, a figure that reflected surging demand for AI memory solutions, particularly high-bandwidth memory chips, known as HBM. Micron’s entire HBM capacity for 2026 was reportedly sold out under contract before the year even started. The company’s guidance pointed to Q4 revenue potentially reaching $50B.
Analysts at Citi characterized the dip as a potential buying opportunity rather than a structural warning sign, with their view resting on the premise that Micron’s position in the AI memory supply chain remains difficult to replicate quickly.
Why this moment matters for the AI trade broadly #
The $1 trillion figure in erased market cap across Nvidia, Samsung, AMD, TSMC, and Micron in a single month illustrates how much paper wealth had accumulated during the AI rally. These companies don’t compete directly across all product lines, but they trade as a cohort in the minds of institutional investors, which means a sentiment shift in one corner of the sector tends to ripple outward fast.
A company with its 2026 HBM capacity fully contracted still fell 8% in a day, which is a reasonable summary of how much emotional weight the market is carrying into every data point right now.
Disclosure: This article was edited by Editorial Team. For more information on how we create and review content, see our