DRAM ETF position-size change: FGXXX weight -1.61 ptsDRAM 美股 ETF 持仓份额变化：FGXXX权重下降1.61个百分点
Signal
On June 11, 2026, the Roundhill Memory ETF (ticker: DRAM) reported an ETF holdings change event. The fund holds $15.51 billion in assets under management, posts $379.7 million in daily turnover, began trading on April 1, 2026, and follows an explicitly active mandate focused on memory and HBM supply chain assets.
Portfolio Change Details
Two confirmed share-count driven position shifts occurred: First American Government Obligations Fund 12/01/2031 (FGXXX) saw its weight fall 1.61 percentage points to 9.91%, with share counts dropping by 272,876,707. The United States Treasury Bill 07/14/2026 (ticker 912797UP0) rose 1.39 percentage points to 9.69%, with share counts increasing by 500,000,000. The fund holds 14 total positions, with a top-5 concentration of 59.18% and top-10 concentration of 86.69%, including 19.26% in cash and other assets alongside positions in SK Hynix, Samsung Electronics, and Micron Technology swaps.
Key Implications
The elevated top-5 concentration means individual holding shifts will have outsized impacts on fund net asset value. With strong daily liquidity, the fund overlaps with popular HBM/memory themes including Micron (MU).
What to Watch Next
Investors should monitor future official holdings disclosures, track additional shifts aligned with its memory and HBM supply chain mandate, and watch for changes to total assets under management.
信号
2026年6月11日，Roundhill Memory ETF（股票代码：DRAM）发生ETF持仓变更事件。该基金管理规模达155.12亿美元，日均成交额3.80亿美元，2026年4月1日正式上市，采用明确主动管理策略，聚焦内存和HBM供应链主题。
持仓变动详情
本次变更涉及两只标的的股份数驱动调整：First American Government Obligations Fund 12/01/2031（FGXXX）权重从11.52%降至9.91%，减少1.61个百分点，股份数减少272,876,707；美国国库券07/14/2026（代码912797UP0）权重从8.30%升至9.69%，增加1.39个百分点，股份数增加500,000,000。该基金共14只持仓，前五大集中度59.18%，前十大集中度86.69%，含19.26%的现金及其他资产，以及SK海力士、三星电子、美光科技相关掉期持仓。
核心意义
高集中度意味着单只持仓调整将对基金净值产生显著影响，当前日均成交额充足，且与美光（MU）等热门内存/HBM标的存在主题重叠。
后续关注
投资者需关注该基金后续官方持仓披露，跟踪是否有更多符合主题的标的调整，同时监测基金管理规模变化。
This analysis was generated by InvestLog AI based on SEC filings, Form 4 insider transactions, Form 144 planned-sale notices, 13F institutional holdings, analyst ratings, and market data. It is for informational purposes only and does not constitute investment advice.这篇研究由 InvestLog AI 基于 SEC 披露、Form 4 内部人交易、Form 144 计划减持、13F 机构持仓、分析师评级和市场数据生成。内容仅供参考，不构成投资建议。