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What Is the WATS ETF? A Complete Guide to Returns, Expense Ratio, Holdings and Alternative ETFs

Updated August 20, 2026 · First published August 20, 2026

The WATS ETF, formally the Corgi Battery Energy Storage Systems ETF, is an actively managed product that invests across the battery storage value chain. This guide covers battery storage stocks, the industry outlook, the absence of a distribution history, the management approach and key risk factors.

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What Is the Corgi Battery Energy Storage Systems ETF?

The Corgi Battery Energy Storage Systems ETF is an actively managed ETF that invests in companies involved in battery energy storage systems and the infrastructure that supports them. It targets capital growth and does not mechanically track a specific index.

It is suited to investors who want exposure to the growth potential of the battery storage industry and can accept individual stock selection risk and global market volatility.

The ETF is run with an active management approach by Corgi Funds.

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How Does the Corgi Battery Energy Storage Systems ETF Invest?

ItemDetails
Tracked IndexNo separate tracked index
Management ApproachActive management
Rebalancing FrequencyAdjusted at the manager's discretion
Distribution FrequencyNo distribution history
Total Expense Ratio0.35%
IssuerCorgi Funds

The manager looks across the storage system value chain, including battery cells and packs, management systems, power conversion equipment, thermal management and safety equipment, energy management software, grid services, development and integration, and recycling. It then selects stocks by weighing each company's position in the supply chain, growth potential and valuation.

  • An investment scope that covers the entire storage system value chain
  • Stock selection based on the manager's judgment rather than index tracking
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Corgi Battery Energy Storage Systems ETF Size and Costs (AUM and Management Fee)

Assets under management (AUM) stand at $0.5M, and the total expense ratio is 0.35% per year.

For thematic active products, trading costs and actual changes in the portfolio can affect the returns investors experience. Before buying, it is worth checking the fee burden, bid-ask spreads and how much of the holdings are disclosed.

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Corgi Battery Energy Storage Systems ETF Performance and Trends

1-Year Price Performance
Dividend & Yield
No dividend or yield data available
52-Week Price Range
$17
Low $16 High $32
vs. low +6.94% vs. high -45.82%

Because the fund has a short track record, it is difficult to judge its characteristics from long-term performance alone. Investor sentiment toward the battery storage industry, the policy environment, raw material and equipment costs, and changes in power market profitability can all affect fluctuations in net asset value and market price.

Thematic active ETFs can see larger swings in fund flows when optimism and concern about the industry outlook collide. Before buying, check bid-ask spreads, the gap between net asset value and market price, and liquidity conditions tied to the creation and redemption structure.

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Corgi Battery Energy Storage Systems ETF Pros and Cons

The fund provides thematic exposure by focusing on the battery storage value chain, but investors should also weigh industry concentration, active selection and technological change risks.

💪 Key Strengths

Value Chain Access
It looks broadly across the manufacturing, software and project segments of battery storage systems, offering a route to thematic exposure.
Active Selection
Rather than relying solely on index inclusion rules, it factors business relevance, growth potential and valuation into the manager's judgment.
Global Investment Scope
It can invest in companies listed in the US and overseas, so it is not limited to a single region.

⚠️ Points of Caution

Industry Concentration Risk
Changes in demand, regulation and supply chains in the battery storage industry and related industries can weigh heavily on the fund's performance.
Technological Change Risk
If technology and chemistry evolve quickly, the competitiveness of existing products and suppliers can weaken.
Liquidity and Price Discrepancy
When market trading is thin or volatility is high, the gap between net asset value and market price can widen.
Manager Judgment Risk
If the manager's stock selection and allocation decisions fall short of expectations, the fund may lag similar-objective products or the broader market.
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Corgi Battery Energy Storage Systems ETF Alternative ETFs and Related Products

Based on the information provided, comparison candidates and similar peer ETF data are limited, so no specific ticker is offered as a direct alternative. When reviewing this product, consider that industry concentration and management approach can differ depending on whether a fund is a thematic product focused on battery storage or a broader clean energy or power grid product. It is also important to compare whether a fund is actively managed, its fee burden, its bid-ask spreads and how much of its holdings are disclosed.

Peer Comparison ETFs
TickerNamePriceChangeAUMTotal Expense RatioDividend Yield1Y
DYNFDYNFiShares U.S. Equity Factor Rotation Active ETF$67.98-0.6%$42.2B0.26%0.83%+14.5%
AVUVAVUVAvantis U.S. Small Cap Value ETF$122.06-0.0%$32.1B0.25%1.24%+23.0%
FNDXFNDXSchwab Fundamental U.S. Large Company ETF$32.60-0.6%$28.5B0.25%1.45%+22.7%
USMVUSMViShares MSCI USA Min Vol Factor ETF$102.95-0.5%$24.3B0.15%1.37%+9.0%
SPMOSPMOInvesco S&P 500 Momentum ETF$138.66-0.1%$21.5B0.13%0.79%+15.2%
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Corgi Battery Energy Storage Systems ETF Investor Checkpoints

When evaluating the Corgi Battery Energy Storage Systems ETF, investors should look beyond the growth prospects of the battery storage industry and also examine the product's active management structure, thematic concentration, trading costs and distribution policy.

CheckpointWhat to CheckCurrent Status
Management ApproachWhether it tracks an index and its stock selection criteriaActive management
Industry ConcentrationDependence on battery storage related industriesConcentration needs to be checked
Trading ConditionsBid-ask spreads and price differences when buying and sellingNeeds to be checked
Distribution PolicyCash distribution history and suitability for your goalsNo distribution history

Because the fund concentrates on a specific industry theme, it can be sensitive to changes in policy, permitting, grid connection, raw material and equipment supply, and technological reliability. Its non-diversified structure and active selection can amplify the impact on performance of weakness at a few companies or errors in the manager's judgment.

The Corgi Battery Energy Storage Systems ETF is an active thematic ETF worth considering for those who want to invest in the battery storage system value chain. However, it is advisable to understand the lack of a distribution history, industry concentration, technological change and trading conditions before judging its fit with your long-term asset allocation goals.

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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 20, 2026.

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