On August 3rd, IT Home reported that the Roundhill Memory ETF (DRAM), the world's hottest memory ETF, completed its position adjustment at the end of July and was once again included in the A-share company Changxin Technology, with a weight of 2.52%, ranking as the eighth largest holding stock in the ETF.

Zhaoyi Innovation's weight in this position adjustment has been reduced to 1.51%, ranking as the tenth largest heavy holding stock. Zhaoyi Innovation was first included in the investment portfolio of this ETF in June 2026, with a weight of 2.91%, also ranking as the eighth largest holding stock.

The Roundhill Memory ETF is issued by Roundhill Investments and will be listed on the Cboe BZX exchange in the United States on April 2, 2026. It is the world's first ETF with a pure memory chip investment theme.

As of August 2nd, the top three holdings of this ETF are Samsung Electronics, Micron Technology, and SK Hynix, with weights of 26.39%, 24.54%, and 22.77%, respectively.

Roundhill also reduced its holdings in Samsung Electronics this week, reducing its holdings by approximately 1 million shares per day from Monday to Wednesday, and selling a total of 3 million shares over three days for approximately $432 million (IT Home note: the current exchange rate is approximately RMB 2.92 billion).

At present, the top ten holdings of DRAM include global storage chip leaders such as Samsung Electronics, Micron Technology, SK Hynix, Seagate Technology, Western Digital, SanDisk, Kaixia Holdings, Changxin Technology, Nanya Technology, and Zhaoyi Innovation.

Changxin Technology is the largest integrated DRAM R&D and manufacturing enterprise in China. According to Omdia's Q4 2025 sales calculation, its global market share reaches 7.67%, ranking fourth in the world and first domestically.

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