Adam Spatacco, The Motley Fool
Sun, May 31, 2026 astatine 4:20 PM CDT 3 min read
The artificial quality (AI) representation spot assemblage is experiencing thing of a renaissance astatine the moment. As of 3 p.m. ET connected May 27, some SK Hynix and Micron Technology (NASDAQ: MU) person entered the trillion-dollar nine -- boasting marketplace caps of $1.1 trillion and $1 trillion, respectively.
This milestone reflects overmuch much than robust net oregon an encouraging aboriginal outlook. Rather, it signals a cardinal rerating of memory's captious value successful the AI infrastructure era.
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What is fueling the rally down Micron and SK Hynix?
Over the past year, representation has go a captious bottleneck wrong AI information centers. Traditional DRAM struggles to support gait with the latency and bandwidth needs of next-generation AI accelerators. High-bandwidth representation (HBM) layers representation dies to nutrient dramatically higher bandwidth.
SK Hynix and Micron person captured starring stock successful supplying HBM to graphics processing portion (GPU) designers similar Nvidia. For now, proviso chains are constrained arsenic request is efficaciously pre-sold for extended periods. These dynamics person shifted important pricing powerfulness toward representation producers. As a result, SK Hynix and Micron are generating historically precocious gross portion besides expanding nett margins.
The representation supercycle has fueled jaw-dropping valuation enlargement
In 2026 alone, SK Hynix shares person risen by much than threefold -- generating a astir 230% return. The show successful Micron banal has been arsenic dramatic: Shares person surged 226% twelvemonth to date, making Micron the second-best performer successful the Nasdaq-100 index.
These gains are not typical of a cyclical betterment successful representation spot stocks. Instead, the parabolic emergence successful SK Hynix and Micron reflects melodramatic valuation enlargement arsenic investors terms successful sustained gross acceleration and net maturation amid choky proviso and secular request from large tech.
What is the champion mode to put successful the AI representation supercycle?
Investors seeking to enactment successful the AI representation supercycle without single-stock attraction hazard mightiness privation to see the Roundhill Memory ETF (NYSEMKT: DRAM). Launched successful aboriginal April, the money offers targeted, planetary vulnerability to the representation spot worth chain. Its apical representation holdings see Micron, SK Hynix, and Samsung, with complementary positions successful retention players specified arsenic Kioxia and Sandisk.

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