The largest memory and storage ETFs
See 5 funds ranked by net assets. Updated Oct 20, 2026. Every fund here is sold on memory and storage. What each one holds, and how much of it the S&P 500 already holds for you, is the column beside the size.
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| # | Ticker | Fund | Net assets ↓ | Weight in S&P 500 companies | Total return, 1Y | Fee | Source |
|---|---|---|---|---|---|---|---|
| 1 | DRAM | Roundhill Memory ETF | $18.6bn, off scale | 15.7% | too new | 0.65% | Issuer daily, Oct 20, 2026 |
| 2 | DISK | Tema Memory ETF | $55m | 36.5% | too new | 0.75% | Issuer page, Oct 19, 2026 |
| 3 | HBMX | Tuttle Capital Concentrated Memory Stack | $27m | 29.1% | too new | 0.95% | SEC filing, Jul 31, 2026 |
| 4 | KMEM | Kurv Memory Select ETF | $23m | not yet filed | too new | 0.65% | Issuer page, Oct 19, 2026 |
| 5 | PRAM | Defiance Memory & Photonics ETF | $6m | holds a swap | too new | 0.65% | Issuer daily, Oct 19, 2026 |
Method
The 5 ETFs in the memory and storage theme, of which 5 publish net assets, ranked on the most recent figure for each.
The rest of the method
Across the funds listed here the weight held in S&P 500 companies runs from 15.7% to 36.5%. Size shows where the money is, not what a fund did. The list sorts one published figure, with no scoring or weighting. Every fund ETFIQ covers in this category is eligible, closed funds included.
ETFIQ links to the documents behind every figure; a link is not an endorsement. A ranking is not a recommendation or an opinion.
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ETFIQ, The largest memory and storage ETFs, ranked by net assets, data as of Oct 20, 2026. https://etfiq.com/rankings/themes-largest-memory
ETFIQ. (Oct 20, 2026). The largest memory and storage ETFs, ranked by net assets. Retrieved from https://etfiq.com/rankings/themes-largest-memory
[The largest memory and storage ETFs, ranked by net assets (ETFIQ, Oct 20, 2026)](https://etfiq.com/rankings/themes-largest-memory)
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