Meet the Super Semiconductor ETF Obliterating Nvidia, AMD, and Broadcom This Year

The Roundhill Memory ETF (DRAM) has doubled since launching in spring 2026, crushing returns from Nvidia, AMD, and Broadcom by betting exclusively on high-bandwidth memory suppliers. The fund's thesis: HBM has emerged as the binding constraint in AI infrastructure buildouts, creating pricing power for the handful of manufacturers who can produce it at scale.

DRAM's portfolio holds approximately 20 memory companies but concentrates 75% of assets in three names—Samsung, SK Hynix, and Micron. That bet has paid off as tight HBM supply keeps margins elevated across the trio. The ETF's structure isolates exposure to memory cyclicality and pricing dynamics separate from broader chip sector moves.

The concentration cuts both ways. Extreme position sizing in three stocks amplifies volatility in both directions. Memory markets remain cyclical, and HBM's current supply tightness could reverse if capacity expansions outpace AI infrastructure demand. Significant Samsung and SK Hynix exposure adds geopolitical risk tied to South Korea and regional tensions.