{"url":"https://etfiq.com/rankings/themes-largest-memory","section":"rankings","title":"The largest memory and storage ETFs | ETFIQ","description":"The largest memory and storage ETFs, ranked by net assets, as of Oct 20, 2026. 5 funds from ETFIQ\u2019s own published figures.","as_of":"Oct 20, 2026","structured_data":[{"@type":"ItemList","name":"The largest memory and storage ETFs","numberOfItems":5,"itemListOrder":"https://schema.org/ItemListOrderDescending","itemListElement":[{"@type":"ListItem","position":1,"name":"DRAM","url":"https://etfiq.com/funds/dram"},{"@type":"ListItem","position":2,"name":"DISK","url":"https://etfiq.com/funds/disk"},{"@type":"ListItem","position":3,"name":"HBMX","url":"https://etfiq.com/funds/hbmx"},{"@type":"ListItem","position":4,"name":"KMEM","url":"https://etfiq.com/funds/kmem"},{"@type":"ListItem","position":5,"name":"PRAM","url":"https://etfiq.com/funds/pram"}]},{"@type":"Dataset","name":"The largest memory and storage ETFs","description":"The largest memory and storage ETFs, ranked by net assets, as of Oct 20, 2026. 5 funds from ETFIQ\u2019s own published figures.","url":"https://etfiq.com/rankings/themes-largest-memory","dateModified":"2026-10-20","creator":{"@id":"https://etfiq.com/#org"},"license":"https://etfiq.com/license/","isAccessibleForFree":true,"creditText":"ETFIQ (etfiq.com)","publisher":{"@id":"https://etfiq.com/#org"},"inLanguage":"en","creativeWorkStatus":"Published","distribution":[{"@type":"DataDownload","encodingFormat":"application/json","contentUrl":"https://etfiq.com/data/thematic.json"}],"variableMeasured":["Weight overlap with the S&P 500","Active share","Holdings","Top ten share of the fund","Total return","Fee for the differing part","Expense ratio"],"keywords":["exchange-traded funds","ETF","Thematic ETFs","fund data","SEC filings"]},{"@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"ETFIQ","item":"https://etfiq.com/"},{"@type":"ListItem","position":2,"name":"Rankings","item":"https://etfiq.com/rankings/"},{"@type":"ListItem","position":3,"name":"The largest memory and storage ETFs","item":"https://etfiq.com/rankings/themes-largest-memory"}]},{"@type":"WebPage","name":"The largest memory and storage ETFs","description":"The largest memory and storage ETFs, ranked by net assets, as of Oct 20, 2026. 5 funds from ETFIQ\u2019s own published figures.","url":"https://etfiq.com/rankings/themes-largest-memory","dateModified":"2026-10-20","isPartOf":{"@type":"WebSite","name":"ETFIQ","url":"https://etfiq.com"},"speakable":{"@type":"SpeakableSpecification","cssSelector":[".lede"]},"publisher":{"@id":"https://etfiq.com/#org"}}],"characters":2694,"truncated":false,"content":"ETFIQ / Rankings / The largest memory and storage ETFs \n \n As of Oct 20, 2026 . Rebuilt every trading night.\n The largest memory and storage ETFs\n 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.\n The largest memory and storage ETFs, ranked by net assets, as of Oct 20, 2026. Source: ETFIQ. # Ticker Fund Net assets Weight in S&P 500 companies Total return, 1Y Fee Source \n 1 DRAM Roundhill Memory ETF $18.6bn 15.7% too new 0.65% Issuer daily, Oct 20, 2026 \n 2 DISK Tema Memory ETF $55m 36.5% too new 0.75% Issuer page, Oct 19, 2026 \n 3 HBMX Tuttle Capital Concentrated Memory Stack $27m 29.1% too new 0.95% SEC filing, Jul 31, 2026 \n 4 KMEM Kurv Memory Select ETF $23m not yet filed too new 0.65% Issuer page, Oct 19, 2026 \n 5 PRAM Defiance Memory & Photonics ETF $6m holds a swap too new 0.65% Issuer daily, Oct 19, 2026 \n \n Method\n The 5 ETFs in the memory and storage theme, of which 5 publish net assets, ranked on the most recent figure for each. 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.\n Where to next\n Every memory and storage ETF and what it holds The thematic ETFs least like the S&P 500 Where these figures came from\n Fund holdings from SEC Form N-PORT and from the issuers own daily files SEC EDGAR, full-text search of fund filings SEC Form N-PORT, what a fund filed it holds Rule 19a-1, what a distribution notice must say ETFIQ links to the documents behind every figure; a link is not an endorsement.\n A ranking is not a recommendation or an opinion. ETFIQ is an independent publisher, not an adviser. Standards and sources \n Cite this page. ETFIQ, The largest memory and storage ETFs, ranked by net assets, data as of Oct 20, 2026. https://etfiq.com/rankings/themes-largest-memory Free to use with attribution for figures ETFIQ computes; issuer data stays under its owner's terms. The underlying files are at Open data .\n Other forms Plain ETFIQ, The largest memory and storage ETFs, ranked by net assets, data as of Oct 20, 2026. https://etfiq.com/rankings/themes-largest-memory APA ETFIQ. (Oct 20, 2026). The largest memory and storage ETFs, ranked by net assets. Retrieved from https://etfiq.com/rankings/themes-largest-memory Markdown [The largest memory and storage ETFs, ranked by net assets (ETFIQ, Oct 20, 2026)](https://etfiq.com/rankings/themes-largest-memory)","source":"ETFIQ, independent ETF data. Recomputed nightly from public filings and prices.","publisher":{"@id":"https://etfiq.com/#org","name":"ETFIQ","url":"https://etfiq.com"},"license":"https://etfiq.com/license/","license_text":"Figures ETFIQ computes are free to use with attribution: ETFIQ (etfiq.com). Issuer data stays under its owner's terms.","citation":"ETFIQ, The largest memory and storage ETFs, ranked by net assets, data as of Oct 20, 2026. https://etfiq.com/rankings/themes-largest-memory"}