Via 247wallst.com
The Roundhill Memory ETF has become one of the fastest-growing funds on record as retail investors pile into the AI-fueled memory chip supercycle
A fund that didn’t exist three months ago now holds roughly $28 billion in assets. The Roundhill Memory ETF, trading under the ticker DRAM, has pulled in approximately $27 billion in net inflows since its April 2 launch, making it one of the fastest asset-gathering ETFs in market history.
What makes that number even more striking: retail investors kept buying through price dips in the underlying holdings. Weekly inflows remained consistent even as memory chip stocks fluctuated.
Inside the fund that Wall Street didn’t see coming #
DRAM is the first US-listed ETF focused exclusively on the memory chip sector. It’s an actively managed portfolio of about 24 holdings, concentrated heavily in the three companies that dominate global memory production. Micron Technology sits at the top with roughly 26% of the fund, followed by Samsung Electronics at around 25% and SK Hynix at approximately 20%.
The fund charges an expense ratio of 0.65%. Early demand was staggering: inflows hit $55 million in a single trading session shortly after launch, then rocketed to $1.1 billion not long after. Recent share prices have hovered in the $55 to $57 range.
Since inception, DRAM has reportedly delivered returns exceeding 160%, with peaks above 198% during mid-2026.
The retail buying activity has been so intense that single-day purchase volumes have surpassed benchmarks previously set by some Bitcoin ETFs, a category that was itself considered a retail phenomenon when spot BTC funds launched in early 2024.
The memory supercycle thesis #
The fund targets three core memory technologies: DRAM (the dynamic random-access memory that shares the fund’s ticker), high-bandwidth memory (HBM), and NAND flash storage.
Analysts have been calling the current environment a memory chip “supercycle.” Contract prices for DRAM and related products have climbed sharply throughout 2026 as hyperscale cloud providers like Amazon, Microsoft, and Google race to build out AI infrastructure.
The three companies at the core of DRAM’s portfolio, Micron, Samsung, and SK Hynix, collectively control the vast majority of global memory chip production. That oligopolistic market structure means pricing power stays concentrated, and when demand surges, these manufacturers capture most of the upside.
What the retail surge signals #
DRAM’s flow data shows buyers persisted through price declines in underlying stocks, treating dips as entry points rather than exit signals. When spot Bitcoin ETFs launched in January 2024, they were hailed as a watershed moment for retail access to alternative assets. DRAM surpassing some of those daily inflow records in its first weeks suggests that AI infrastructure may have eclipsed crypto as the dominant retail investment narrative of the moment.
The risk factors are real. Memory chips are notoriously cyclical, with a long history of boom-and-bust patterns where overinvestment in capacity eventually crushes pricing power. With three stocks comprising more than 70% of the portfolio, DRAM is effectively a concentrated bet on a handful of companies.
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