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What Is the DISK ETF? Returns, Expense Ratio, Holdings, and Alternative ETFs Explained

Updated August 15, 2026 · First published August 15, 2026

The thematic memory ETF DISK ETF is an actively managed product focused on the memory semiconductor value chain within artificial intelligence infrastructure. For investors weighing the different cycles of high-bandwidth memory, DRAM, and NAND, it offers a framework for reviewing the outlook, the absence of distribution history, and the management strategy together.

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What Is a Thematic Memory ETF?

The DISK ETF is an actively managed exchange-traded fund that selects its holdings by analyzing structural demand in the memory semiconductor industry and the competitive position of each company, rather than mechanically tracking a specific index. Its core investment area is the memory value chain, which has grown in importance as artificial intelligence infrastructure expands.

It suits investors who can evaluate thematic exposure while monitoring the volatility of the memory semiconductor cycle and shifts in individual company weights.

This is an actively managed ETF run by Themes ETFs.

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How Does a Thematic Memory ETF Invest?

ItemDetails
Tracked IndexDoes not track a specific index
Management StyleActive management
Rebalancing FrequencyAdjusted at the manager's discretion
Distribution FrequencyNo distribution history
Total Expense Ratio0.75%
Fund ManagerThemes ETFs

This product selects investments from the value chain related to high-bandwidth memory, DRAM, NAND, and storage devices. Rather than replicating index weights, it builds its portfolio by reflecting changes in memory demand, supply adjustments, technology transitions, and each company's business mix.

  • An active approach focused on memory semiconductor sub-sectors
  • A structure that can reflect differences in exposure to high-bandwidth memory and NAND
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Thematic Memory ETF Size and Costs (AUM and Management Fees)

Assets under management (AUM) stand at $57.2M, and the total expense ratio is 0.75% per year.

An active strategy can vary the weights of specific sub-sectors and companies within the memory industry. Therefore, when comparing it with products that track a broad semiconductor index, it is necessary to review the potential for changes in holdings, the manager's judgment, and the cost structure together.

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Thematic Memory ETF Performance and Trends

1-Year Price Performance
Dividend & Yield
No dividend or yield data available
52-Week Price Range
$29
Low $28 High $50
vs. low +3.54% vs. high -43.26%

Net asset value can swing more widely depending on the investment cycle of the underlying industry, the direction of artificial intelligence infrastructure spending, and changes in memory prices. Returns tend to react sensitively to supply and demand in specific sub-sectors and to the earnings of individual companies.

Fund flows into thematic semiconductor products can shift with expectations for artificial intelligence infrastructure investment and perceptions of the semiconductor cycle. In particular, views on memory supply adjustments and the pace of demand recovery can affect investor sentiment and fund inflows and outflows.

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Thematic Memory ETF Strengths and Weaknesses

Its strength is active exposure concentrated in the memory industry, but it also carries thematic risk that is sensitive to industry conditions and price swings.

💪 Key Strengths

Concentrated Memory Exposure
By focusing on the memory ecosystem, including DRAM, NAND, and high-bandwidth memory, it offers an analytical lens different from general-purpose semiconductor products.
Active Selection Judgment
The manager can adjust the weights of the memory value chain and of companies by region based on its judgment.
Access to Global Companies
It targets memory-related companies across multiple regions, a structure intended to reduce dependence on a single market.

⚠️ Points to Watch

Industry Concentration Risk
If conditions in the memory semiconductor industry deteriorate, the entire portfolio can be affected at once.
Price Volatility
Changes in memory prices and inventory trends can affect the earnings of holdings and the value of the fund.
Active Management Risk
If the manager's decisions lag market trends or a benchmark, performance gaps can arise.
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Thematic Memory ETF Alternatives and Related Products

Because information on comparable listed funds is limited, it is more appropriate to compare products on memory concentration, differences in exposure between high-bandwidth memory and NAND, and whether they are actively managed, rather than listing tickers of direct substitutes. Since the sub-sector composition of this ETF can change, investors should check the official holdings, fees, and whether there is any distribution history before investing.

Peer Comparison ETFs
TickerNamePriceChangeAUMTotal Expense RatioDividend Yield1Y
SMHSMHVanEck Semiconductor ETF$522.49-7.0%$71.9B0.35%0.21%+43.6%
GDXGDXVanEck Gold Miners ETF$77.09-5.2%$25.1B0.51%0.82%+5.8%
DRAMDRAMRoundhill Memory ETF$48.01-7.2%$20.1B0.65%--
CIBRCIBRFirst Trust NASDAQ Cybersecurity ETF$101.03-3.8%$18.2B0.58%0.39%+32.4%
IXNIXNiShares Global Tech ETF$134.69-5.1%$9.4B0.37%0.25%+22.7%
Top Holdings
TickerNameWeightPriceChangeMarket CapP/EDividend Yield
SNDKSandisk Corp0.17%$1150.89-13.5%$166.3B15.8-
SKHYSK Hynix Inc ADR0.16%$149.21-8.0%$1.09T9.71.5%
MUMicron Technology Inc0.05%$884.74-5.3%$1.00T11.90.08%
STXSeagate Technology Holdings Plc0.04%$644.58-8.0%$146.6B33.90.48%
WDCWestern Digital Corp0.04%$366.11-7.4%$137.0B14.20.18%
AEHRAEHRAehr Test Systems0.04%$54.89-10.3%$1.8B--
FAFFAFFirst American Financial Corp0.01%$63.82+0.2%$6.5B9.03.64%
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Thematic Memory ETF Investor Checkpoints

Before investing, review the demand and supply environment in the memory industry, changes in holdings resulting from active management, and whether the fund has any distribution history. As a thematic product, it is also worth confirming that you can tolerate volatility that differs from a broad market index.

CheckpointWhat to CheckCurrent Status
Management StrategyWhether it tracks an index and the criteria for active selectionActive management
Industry ExposureMemory sub-sectors and company concentrationConcentration risk needs review
Distribution PolicyDistribution history and cash flow expectationsNo distribution history
CostsFee burden over a long holding periodCheck official materials

The semiconductor sector can become more volatile depending on technology transitions, supply adjustments, customers' capital spending, and geopolitical regulation. Because changes in memory prices can be reflected quickly in company earnings, the size of the thematic exposure and the investment horizon should be managed separately.

The DISK ETF is an active product that concentrates on specific sub-sectors of the memory industry. Rather than investors seeking broad market exposure, it is better suited to those who can separately assess memory demand, supply, and technology transitions, and they should judge its fit accordingly.

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Disclaimer: This content is for informational purposes only and does not constitute investment advice. All investment responsibility lies with the investor.

This article reflects information as of August 15, 2026.

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