DRAM Surged 51% in One Month While SOXX Climbed 32%, but Only One Survives the Memory Cycle Downturn

Michael Williams

Mon, May 18, 2026 at 12:30 PM EDT 3 min read

Quick Read

• Roundhill Memory ETF (DRAM) rose 51.22% over the past month versus iShares Semiconductor ETF (SOXX) at 32.10%, driven by AI-accelerator demand pushing HBM pricing and memory supplies tight, but DRAM’s 73% concentration in Samsung Electronics, SK Hynix, and Micron Technology exposes investors to synchronized downside when the memory cycle turns.

• SOXX offers broader semiconductor exposure across logic, foundry, equipment, and analog companies with a 0.34% expense ratio and 309% five-year returns, while DRAM functions as a concentrated bet on memory pricing cycles with a 0.65% expense ratio best suited for tactical positioning during HBM tightness.

• The analyst who called NVIDIA in 2010 just named his top 10 stocks and Roundhill Memory ETF wasn't one of them. Get them here FREE.

The choice between the Roundhill Memory ETF (CBOE:DRAM) and the iShares Semiconductor ETF (NASDAQ:SOXX) looks like a semiconductor exposure decision, but it is really a question about how concentrated a cyclical bet you want to make. SOXX gives you the whole chip stack. DRAM gives you three companies in a trench coat: Samsung Electronics, SK hynix, and Micron Technology together account for 73.04% of the fund, all riding the same memory pricing cycle.

What Each Fund Is Actually Betting On

SOXX is a diversified bet on the secular growth of compute, spanning logic, foundry, equipment, and analog names. It needs broad semiconductor demand. It does not need any single sub-segment to cooperate. The 0.34% net expense ratio reflects its index-fund mainstream status.

The analyst who called NVIDIA in 2010 just named his top 10 stocks and Roundhill Memory ETF wasn't one of them. Get them here FREE.

DRAM is a pure-play wager on memory pricing. With Samsung at 24.99%, SK hynix at 24.22%, and Micron at 23.83%, plus Kioxia, Sandisk, and Western Digital filling out NAND exposure, the fund effectively tracks the global DRAM and NAND supply-demand balance. It outperforms when memory bit pricing rises, HBM demand from AI accelerators tightens supply, and inventories normalize. It underperforms harshly when the memory cycle turns: oversupply, falling ASPs, and capex hangovers crush all three top holdings simultaneously. You pay 0.65% for that concentrated thesis.

Where The Difference Shows Up

Recent action makes the divergence visible. Over the past month, DRAM rose 51.22% while SOXX rose 32.10%, as HBM pricing and AI memory demand drove Micron and SK hynix higher. Over the past week, DRAM gained 15.55% versus SOXX at 7.65%. That is the upside leverage of a focused memory bet.