The Roundhill Memory ETF (DRAM) tracking memory chips has attracted $1.1B in a day, cementing its AI-fueled momentum.
A memory-market rally is moving faster than many investors expected, with one ETF pulling in more than $1 billion in a single day as the AI trade keeps finding new ways to heat up.
The Roundhill Investment Memory ETF. known by its ticker DRAM and designed to track the memory sector. has raised more than $5 billion since its April 2 launch.. Most notably. it gained $1.1 billion on Thursday alone. underscoring how quickly demand has accumulated for a very specific corner of the semiconductor supply chain.
From the start, the ETF’s rollout was unusually quick.. It collected $1 billion within its first 10 days of trading—an early milestone that the report compared to the pace of major bitcoin ETF rollouts three years earlier and the debuts of other widely watched products. including iShares’ LQD bond fund. SPDR’s GLD gold ETF. and JP Morgan’s BBCA Canadian equity fund.
The pitch behind the fund is tightly tied to the idea that memory is the AI bottleneck. Roundhill CEO Dave Mazza said memory has been identified as a clear constraint in the AI push, pointing to a shortage of memory chips that he expects to persist beyond a single quarter and for multiple years.
That demand story is showing up not only in inflows, but also in the ETF’s market performance.. The report said DRAM has seen inflows every day since launch. maintaining a 23-session streak. while the fund’s price has risen sharply—described as a 70% rally—alongside records in holdings such as Micron and SanDisk.
Options traders are also leaning in.. The report said activity is concentrating around DRAM on Cboe. with more than 90. 000 contracts traded on Thursday and nearly twice as many calls bought as puts.. It was also reported that the fund has moved into the top 40 among all U.S.-listed ETFs by options volume.
For traders. the appeal is partly practical: options provide a way to express bullish bets quickly when a theme is moving so rapidly.. When a fund’s inflows and underlying stock moves are both accelerating. it can attract more speculative positioning. which in turn increases liquidity and makes new strategies easier to execute.
The fund’s construction also appears to be a key part of the attraction.. The report said DRAM includes Korea’s major memory chip names, specifically SK Hynix and Samsung Electronics.. Those companies are central players in the memory supply chain. but they can be harder to access in a clean. single-theme way through U.S.-listed products.
Mazza said the reason those holdings matter is that investors can face tradeoffs elsewhere.. He argued that buying a South Korea-focused ETF may bring additional exposures investors may not want. while using a broad semiconductor ETF can leave memory concentrated too lightly—citing the limited weight of companies like Micron in such baskets.
Meanwhile. the surge in DRAM is being framed as a sign of how investors are chasing the next AI-related constraint. not just the most visible names.. By targeting memory specifically—an input that supports AI computing—DRAM’s rise reflects how quickly the market can rotate from “AI winners” to “AI bottlenecks” when supply-demand dynamics look tight.
That also raises a question investors are likely weighing: how long can a themed rush last when it’s built on a shortage narrative.. Mazza’s stance. as reported. is that the memory squeeze is not expected to clear soon. but the markets’ rapid repricing still suggests many participants are already acting on those expectations.
For the broader ETF market. DRAM’s speed in attracting capital and triggering high options volumes may add pressure on other thematic funds that focus on semiconductor sub-industries.. If investors keep rewarding narrow exposure to specific constraints—especially when paired with strong performance—the pattern could continue even as AI-related sentiment shifts between different layers of the supply chain.
Memory ETF DRAM AI memory bottleneck Roundhill Investment ETF inflows Cboe options volume SK Hynix Samsung Electronics