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Designing Liquidity: Market Making and Secondary Market Models for Fractional Fund Shares

14 May 2026 · CurveBlock · Context: Bank of England
Designing Liquidity: Market Making and Secondary Market Models for Fractional Fund Shares

Secondary market design for fractional fund shares is not a single blueprint. Some platforms operate continuous limit order books that mimic exchange‑style trading, while others use periodic auction windows or designated liquidity events to concentrate activity and improve price discovery. Each model balances the desire for tradability against the low daily volumes and heterogeneous underlying asset values typical of real‑world assets.

Market makers play a pivotal role where continuous trading is offered. Professional liquidity providers can quote two‑way prices, absorb short‑term imbalances and narrow spreads, but they require predictable rules, tick sizes and inventory management frameworks to operate effectively. Alternative approaches use periodic matching auctions to aggregate demand and supply, reducing the need for permanent liquidity provision and limiting the risk of thin‑market mispricing.

Transparent rules about order priority, published spreads, and the mechanics of trade execution matter because they shape investor expectations about slippage and execution cost. Governance arrangements that manage conflicts of interest (for example, between an issuer and a market maker) and publicly disclosed performance metrics on liquidity and execution quality support investor trust.

For everyday savers considering fractional digital shares in property or renewables, the secondary market model affects how easily positions can be adjusted and the likely cost of trading. Evaluating whether a platform uses continuous quoting, auction windows or designated market makers helps retail investors understand practical liquidity and price discovery outcomes.

Reference source: Bank of England

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