The world's first memory-themed ETF officially launched, with Samsung, SK Hynix, and Micron accounting for a combined weight of over 73%.

Global capital markets have welcomed the first exchange-traded fund focused exclusively on the memory semiconductor sector, opening up a new path for investors to directly target the core track of the AI infrastructure buildout.

On Thursday, U.S. ETF issuer Roundhill Investments announced the launch of the Roundhill Memory ETF, which has become the world’s first ETF product themed around memory semiconductors. The fund covers leading global companies across sub-sectors such as DRAM, high-bandwidth memory (HBM), NAND flash, and solid-state storage devices (SSD), directly corresponding to the hardware segments where the expansion of AI computing power is currently most concentrated.

Based on April 1 holding data, Samsung Electronics, SK hynix, and Micron Technology rank in the top three with weights of approximately 25%, 24.2%, and 23.8%, respectively, together accounting for more than 73% of the fund’s total weight. The fund’s holdings announced the same day also include storage-industry-chain companies such as Kioxia Holdings, Sandisk, Western Digital, Seagate Technology, On Semiconductor (ASIA) and Winbond Electronics.

In AI large-model training and inference scenarios, the above products are currently in the period of strongest demand. As the key medium connecting GPUs and memory, HBM has become an indispensable component for high-end AI accelerators, and the ongoing tight supply situation continues to boost the bargaining power of related manufacturers.

Three giants dominate the holding structure

In its announcement, Roundhill Investments noted that, as the computing power demand for large-scale AI training and inference continues to expand, memory semiconductors have become an increasingly scarce core resource in AI infrastructure construction.

Roundhill Investments Chief Executive Officer Dave Mazza said: “Memory is moving toward a core position in the AI ecosystem. As AI scale and complexity increase, demand for high-performance memory has become a key constraint limiting the speed of AI development. The original intent of DRAM design is to enable investors to specifically target the suppliers of this AI technology-stack layer—something that broad-based semiconductor funds cannot provide.”

From the perspective of holding distribution, while the fund concentrates its exposure on leading companies, it also takes into account diversified coverage across the memory industry chain. Samsung Electronics (24.99%), SK hynix (24.22%), and Micron Technology (23.83%) together account for a combined weight of 72.04%, forming the absolute core of the fund.

The remaining holdings are diversified across Kioxia Holdings (4.87%), Sandisk (4.66%), Western Digital (4.64%), Seagate Technology (4.49%), On Semiconductor (3.95%) and Winbond Electronics (2.35%).

Founded in 2018, Roundhill Investments is a U.S. Securities and Exchange Commission-registered investment adviser focused on innovative ETF products. The company’s product lineup covers thematic stocks, options yield and trading-type instruments. To date, its team has累计 issued more than 100 ETFs, and multiple products are among the first of their kind globally.

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