Memory ETF Sells Samsung to Buy ChangXin: Chinese DRAM Enters International Mainstream Portfolio for the First Time
nashnova research
US ETF manager Roundhill sharply cut Samsung Electronics this week while buying 65 million shares of CXMT, making the Chinese DRAM maker the first from the mainland to enter a mainstream international passive investment product.
What exactly moved in this rebalance?
Roundhill's DRAM-themed ETF — a fund dedicated to memory-chip companies — completed a major rebalance this week.
On Tuesday and Wednesday it bought a cumulative 65 million shares of CXMT (长鑫存储), lifting CXMT's weight in the fund to 2.47%.
Over the same window, Monday through Wednesday, it sold roughly 1 million Samsung shares per day — 3 million shares in total.
Why does this count as a milestone?
CXMT is currently the only mainland Chinese company mass-producing DRAM — the core memory chip inside phones and servers.
This means → a Chinese DRAM player has for the first time received a formal allocation in a mainstream international passive product — moving from an industry headline to a real-money holding.
In plain terms = overseas funds used to "watch" Chinese memory; now they have placed an order.
What should investors watch next?
At 2.47%, the weight is still tiny. Samsung, SK Hynix, and Micron still dominate the ETF's holdings.
This means → the allocation looks more like an entry ticket. Whether CXMT earns further increases depends on its products' real competitiveness and market acceptance globally.
The key signal: whether CXMT's weight rises, holds, or drops at the next quarterly rebalance will directly reflect international capital's true verdict on Chinese DRAM.
市场有风险，内容仅供研究参考，不构成投资建议。