What Moneybox Tells Us About Price Discovery on PISCES

In mid-July, Moneybox completed a £45 million secondary share sale for long-serving employees on the London Stock Exchange’s Private Securities Market. The transaction valued the digital wealth management business at approximately £800 million, a 45 per cent uplift on the £550 million set at its last secondary sale in October 2024, and enough to tip it into unicorn territory. As the Financial Times reported, Moneybox chose PISCES over alternative routes, with Crowdcube managing the sell-side process and the auction running on LSEG’s PSM.

So far, so encouraging for the new market. However, it is the mechanism behind that £800 million figure, and what it does and does not represent, that deserves closer attention.

The price that nobody bid for

PISCES transactions are, by design, permissioned. Moneybox controlled which investors could access the auction, and the sale used a fixed-price mechanism rather than a dynamic order book. No new capital was raised. Institutional buyers (led by Apis Partners) purchased existing shares from employees at a price set in advance, underpinned by Moneybox’s reported metrics: over £23 billion in assets under administration, sustained profitability and nearly two million customers.

This is not, in the traditional sense, price discovery. There was no competitive bidding in which multiple investors tested a range against each other. There was no public price history on which to anchor expectations. As Tech Funding News pointedly observed, whether PSM pricing holds up to the scrutiny a real funding round would attract remains untested. The valuation was anchored by the company’s narrative and the willingness of a curated group of buyers to pay it, which is not so different from how most pre-IPO secondaries have always worked. The difference is that PISCES wraps it in the imprimatur of a regulated exchange venue.

Wayve’s discount and what the contrast reveals

To understand what the Moneybox outcome actually tells us, set it alongside the transaction that preceded it by a fortnight. Wayve, the autonomous driving company backed by Nvidia and Microsoft, completed an $85 million employee tender on the same PSM platform in early July, making it the largest PISCES trade to date. However, Wayve’s shares sold at a roughly 10 per cent discount to its $8.6 billion Series D valuation, as Bloomberg reported. Buyers including ARK Invest and G Squared acquired common stock lacking the liquidation preferences of institutional preferred shares and the discount likely reflects that difference in rights.

Two transactions on the same venue, under the same framework, in the same fortnight: one a 45 per cent premium, the other a 10 per cent discount. PISCES pricing is entirely idiosyncratic, shaped by the company’s momentum, the share class on offer, how broadly or narrowly the investor pool is permissioned, and the demand dynamics of that particular auction. The mechanism itself is agnostic. It does not produce a “market price” in the way that continuous trading on a public order book does; it facilitates a negotiated outcome dressed in multilateral-trading infrastructure.

A feature, not a bug?

For companies and their advisers, this is arguably a strength. A business with genuine tailwinds (as Moneybox credibly demonstrated) can crystallise a valuation event for employee retention without conceding the discount a fully open auction might introduce. A business in a capital-intensive, pre-revenue phase can offer liquidity to early team members without marking its equity to a price that disrupts its next institutional round. In both cases, the permissioning and fixed-price features of PISCES give the company meaningful control over the outcome, within a structure that benefits from exchange-level settlement, stamp duty exemption, and regulatory credibility.

Rothschild & Co’s Growth Equity Update characterised PISCES as combining public-market features (multilateral trading, non-discretionary matching, transparency) with private-market features like permissioned participation and discretion over disclosure. What Moneybox and Wayve together demonstrate is that it is the private-market features doing the heavy lifting on price formation. The public-market trappings provide legitimacy and infrastructure, but the economics are still being set the way private companies have always set them, through controlled negotiation with selected counterparties.

This matters for the broader debate about PISCES’s role in UK capital markets. Yahoo Finance commentary following the Wayve transaction asked whether PISCES would prove to be the “stepping stone to IPO” that government originally envisaged, or simply a tool that lets companies stay private longer by accessing liquidity without public scrutiny. If a company can achieve a unicorn valuation, reward its employees, and attract institutional capital, all without publishing a prospectus or subjecting itself to continuous disclosure, the incentive to go public becomes harder to articulate.

We saw this at first hand when advising on the first PISCES transaction on the PSM earlier this year, and it is becoming clearer with each subsequent deal: PISCES is maturing into a flexible liquidity tool rather than a waystation. Whether the FCA and Treasury view that trajectory as success or drift will shape the sandbox’s future beyond 2030.

For now, the practical takeaway is straightforward. The venue will reflect your valuation story back at you, provided you control who is in the room and come armed with the metrics to justify the number. That is powerful, but it is not the same as having a market tell you what you are worth.