In this article, we look at the development of EU-regulated money market fund ETF share classes and who might make use of them
Introduction
A key challenge for many treasury functions is investing surplus cash – whether overnight or for longer. Within the traditional framework of Security, Liquidity and Yield, the landscape of cash investing is evolving rapidly. Recent years have seen a wave of innovation, from ESG funds to tokenised money market funds (MMFs) and the advent of stablecoins. Among these changes, the introduction of exchange traded fund (ETF) share classes into established, EU-regulated MMFs stands out as an innovative delivery of a popular product. We will discuss what’s new, what’s not, how ETF and non-ETF share classes compare and who might make use of the new format. While not seen as applicable for some corporate treasury functions, this paper allows the treasurer to gain a deeper understanding of this new product development.
1. The starting point: established LVNAV liquidity funds
For liquidity investors, these funds are familiar tools: highly regulated, diversified and actively managed vehicles designed for capital preservation and same-day access. Key features typically include:
• Short-term Low Volatility Net Asset Value (LVNAV) MMFs, regulated under the EU Money Market Fund Regulation
• Triple -A rated by leading rating agencies
• Managed with objectives of capital preservation, daily liquidity, and returns comparable with overnight money-market rates (SONIA and €STR)
• UCITS-compliant, classified as Article 8 under SFDR.
2. What’s changing: adding ETF share classes
The innovation is not a new fund, but a new way of holding shares in existing funds. These ETF shares are listed on exchanges (such as the London Stock Exchange for GBP; Xetra and Borsa Italiana for EUR) and settle via the international central securities depository (ICSD) model.
Importantly, there is no change to the funds’ objectives, strategies, risk management, credit ratings, SFDR classification or fee structures as a result of adding ETF share classes.
3. What stays the same: portfolio, risk profile and objectives
For both ETF and non-ETF share classes, investors are exposed to the same underlying pool of assets.
• Portfolio and process: active management within a disciplined global liquidity framework, using in-house credit research and strict guidelines on diversification, maturity and issuer limits.
• Regulatory status: short-term LVNAV MMFs under EU regulation, with tight constraints on maturity and liquidity
• Ratings and ESG: Triple A money fund ratings and SFDR Article 8 classification
• Objectives: preservation of capital and provision of daily liquidity, with returns comparable to local short-term interest rates.
Adding ETF share classes does not change any of these elements. Performance, yield and risk profile are determined by the same portfolio and process.
4. What’s different: operational and market-structure contrasts
The main differences between ETF and non-ETF share classes lie in how investors hold and trade their shares.
Unlisted (traditional) share classes:
• Access: directly with the transfer agent, via a money fund portal or through a bank
• Dealing frequency: once per dealing day
• Settlement: T+0 (same day) for subscriptions and redemptions
• Pricing: single dealing NAV for both subscriptions and redemptions; no bid-offer spread at fund level
• Operational set-up: bank account and standard fund dealing documentation
• Share classes: distributing and accumulating options.
ETF share classes:
• Access: via a broker, on exchange, or OTC, using standard securities trading infrastructure
• Dealing frequency: throughout the trading day, whenever the relevant exchange is open
• Settlement: T+2 securities settlement through ICSD (for example, Euroclear), with delivery-versus-payment (DVP)
• Pricing: market-driven bid and ask prices around the underlying NAV, quoted by market makers/authorised participants. Brokerage fees may also apply
• Operational set-up: custody account and brokerage relationship; ability to hold listed securities
• Share classes: accumulating only.
The ETF share class is, in effect, another ‘door’ into the same building. The experience in the lobby is different – trading screens, bid/ask spreads, T+2 settlement – but behind the door is the same pool of short-term instruments managed by the same team.
Who holds the shares?
• Non-ETF: the investor (or their nominee) is the registered holder on the fund’s shareholder register
• ETF: shares are registered in the name of the common depository’s nominee on behalf of the ICSD; investors hold beneficial interests through their custodian.
This structural difference is standard for European ETFs and does not alter the fund’s portfolio or governance, but it does affect how settlement and record-keeping operate.
5. Why add ETF share classes
For many existing treasury and liquidity users, the unlisted share class remains the most straightforward route to same-day cash management. ETF share classes may be of ‘limited interest’ to such clients, who value T+0 settlement and single-price dealing and favourable accounting treatment.
The rationale for introducing ETF share classes is threefold:
A. Meeting demand from ETF-centric allocators: a growing group of allocators – multi-asset managers, model portfolio providers, certain private banks, and wealth managers – run portfolios almost exclusively through ETFs. For these investors, ETF share classes allow them to treat cash and liquidity allocations in the same operational way as equity or bond exposures:
• Listed security, tradeable intraday
• No minimum subscription amount at fund level (one share)
• Integrated into existing ETF dealing, custody and reporting systems.
ETF share classes allow ETF users to ‘plug in’ institutional-grade MMFs without having to step outside their established ETF infrastructure.
B. Potential benefits of scale and diversification for all shareholders: by opening the funds to a broader investor universe – including those who would otherwise not consider a traditional MMF share class – ETF share classes can support:
• Growth in assets under management (AUM), which can enhance portfolio diversification and potentially improve trading efficiency in underlying money markets
• Diversification of the investor base, reducing concentration risk by client type or geography.
These benefits accrue at the fund level and are shared by all shareholders, regardless of how they access the fund.
C. Industry evolution and regulatory change: the introduction of ETF share classes to EU-regulated MMFs has required both regulatory evolution and operational innovation. A recent change by the Central Bank of Ireland allowed Irish-regulated funds to add ETF share classes without changing the fund name or creating separate stand-alone vehicles. HSBC’s launch is described as the first UCITS ETF share class in an existing EU-regulated MMF, and the first short-term LVNAV money market ETF in Europe, setting a precedent that other managers may follow.
6. Practical considerations for liquidity fund investors
For investors already using traditional MMF share classes, the key question is not ‘ETF or MMF?’, but ‘does an ETF share class complement or complicate my existing liquidity framework?’
When non-ETF share classes may remain the natural choice: unlisted share classes may continue to be preferred where:
• T+0 settlement is critical, for example for intraday cash sweeps, end-of-day positioning or same-day funding of payments
• Operational simplicity is paramount, with existing portals, treasury systems and bank accounts already configured for MMF dealing
• A single daily NAV price (no bid-ask spread) aligns better with internal accounting, performance measurement or governance requirements
• Alignment with external accounting definitions (for example, IFRS cash and cash equivalent*).
ETF share classes are expected to be of limited direct interest to many existing liquidity clients for these reasons.
Where ETF share classes may add value: ETF share classes may be additive where:
• Portfolios are already ETF-centric, and adding a listed ‘cash sleeve’ simplifies allocation, reporting and trading workflows
• Intraday trading flexibility is more important than same-day settlement – for example, using liquidity ETFs as a tactical allocation tool or within multi-asset strategies
• Minimum size constraints on traditional share classes are a consideration; ETFs can be accessed in single-share increments, subject to transaction costs.
In these cases, the ETF format allows investors to access the same Triple A-rated, LVNAV MMFs while aligning with existing ETF trading and custody practices.
7. Secondary market dynamics and additional risks
The introduction of ETF share classes adds a layer of ETF-specific consideration – such as secondary market liquidity, settlement and counterparty considerations – on top of the underlying MMF risks.
Points to consider:
• Bid-ask spreads and price/NAV alignment: ETF prices can deviate from NAV, particularly in stressed markets, although the presence of multiple-authorised participants and liquidity buffers tends to support alignment through primary-market arbitrage. Secondary markets can act as a buffer, with brokers absorbing flows on balance sheet rather than instantly transmitting all redemptions to the fund
• Settlement and counterparty risks: T+2 settlement introduces a time gap relative to the underlying T+0 settlement of the fund’s portfolio, although use of ICSDs and DVP settlement mitigates these risks.
These are not new risks in the context of the broader ETF ecosystem – which has been tested through multiple market crises over more than two decades – but they are distinct from the operational profile of traditional MMF share classes and merit consideration.
8. Portfolio role: liquidity ETFs as part of the cash toolkit
From an asset allocation perspective, both ETF and non-ETF share classes of these MMFs can fulfil familiar roles:
• Liquidity buffer: meeting redemptions, funding operational expenses or managing collateral requirements without forced sales of longer-duration assets
• Volatility dampener: providing a low-volatility allocation that can reduce overall portfolio drawdowns
• ‘Dry powder’: allowing investors to hold purchasing power in a yield-bearing, low-duration asset while retaining flexibility to redeploy into risk assets during dislocations
• Partial inflation hedge: the short-duration nature of MMFs helps them adjust more quickly to changes in policy rates than longer-duration bonds, mitigating real capital erosion.
The ETF wrapper does not change these roles; it simply offers an alternative operational route to them, with different trade-offs between intraday tradability, settlement timing and dealing mechanics.
Conclusion: same core, new wrapper
The addition of ETF share classes to established EU-regulated MMFs represents an incremental but significant evolution in cash management.
The core remains the same: Triple-A rated, short-term LVNAV MMFs, actively managed with a focus on capital preservation, daily liquidity and money-market-like returns, under a robust regulatory and risk framework.
The wrapper is new: listed ETF share classes that bring these funds into the ETF ecosystem, with intraday trading, T+2 settlement and no fund-level minimum dealing size for secondary-market trades.
For liquidity investors, the decision is not binary. Traditional share classes may remain the primary tool for T+0 operational cash, while ETF share classes may serve as complementary vehicles for ETF-centric strategies, tactical allocations or specific portfolio construction needs.
Against the backdrop of broader innovation in tokenised MMFs and stablecoins, ETF MMF share classes offer a comparatively familiar way to access ‘cash as a security’ – combining the regulatory depth of EU MMF regimes with the flexibility of the ETF format, without changing the underlying risk and return characteristics of the funds themselves.
*We would encourage clients to engage with their internal and external auditors in relation to this topic, and the final determination is for the investor’s accountant to make.