Data as of .
Memory and storage ETFs: what each one holds
5 funds, measured by holdings rather than by name. The typical fund carries 20% of its weight in S&P 500 names, which is the 28th most of the 40 themes here with filed books.
What this fund actually owns
DRAM is the only memory and storage fund here with a filed book. Its ten largest holdings are below.
| Company | Weight in DRAM |
|---|---|
| TREASURY BILL | 27.2% |
| SK hynix Inc 000660 | 20.2% |
| Samsung Electronics Co Ltd 005930 | 18.3% |
| Sandisk Corp SNDK | 6.6% |
| Kioxia Holdings Corp 285A | 5.5% |
| Western Digital Corp WDC | 5.5% |
| Seagate Technology Holdings PL STX | 5.3% |
| GigaDevice Semiconductor Inc 603986 | 3.9% |
| Micron Technology Inc MU | 2.6% |
| Nanya Technology Corp 2408 | 2.3% |
Each fund files its whole book and this counts the ten largest out of it, so a fund missing from a row may still hold that company below its own tenth position. Weights are of the funds that name it, never of the theme.
| Ticker | Fund | Issuer | In the S&P 500 | Active share | Total return 1Y | vs S&P 500 | Fee |
|---|---|---|---|---|---|---|---|
| DRAM | Roundhill Memory ETF | Roundhill | 20.0% | 96.8% | listed 162 days | · | 0.65% |
| PRAM | Defiance Memory & Photonics ETF | Defiance | holds a swap | holds a swap | listed 15 days | · | 0.65% |
| DISK | Tema Memory ETF | Tema | no filing yet | no filing yet | listed 73 days | · | 0.75% |
| HBMX | Tuttle Capital Concentrated Memory Stack ETF | Tuttle | no filing yet | no filing yet | listed 101 days | · | 0.95% |
| KMEM | Kurv Memory Select ETF | Kurv | no filing yet | no filing yet | listed 72 days | · | 0.65% |
Where to next
Where these figures came from
ETFIQ links to the documents behind every figure. It is not affiliated with any issuer, and a link is not an endorsement.
ETFIQ is an independent publisher and makes no recommendations; every figure is stated arithmetic on published data. Standards and sources
Cite this page. ETFIQ, Memory and storage ETFs: what each one holds, data as of Sep 11, 2026. https://etfiq.com/themes/memory Free to use with attribution; the underlying files are at Open data.