How the SpaceX IPO is redefining retail access to capital markets in the UK

Joe Winkley, Head of Corporate Services at Winterflood, and Sophia Bechev, Head of WRAP Execution, speak with Verity Viola-Heir, Senior Marketing and Communications Manager, about how Winterflood and Marex supported UK retail participation in the largest IPO in history and what it means for issuers seeking to tap into the future of retail inclusion.

“Building the infrastructure of the future” was SpaceX’s proposition when it launched the now largest IPO in history. Whilst the company was referring to their offering in the shape of rockets and satellites, this also applies to how Winterflood was able to offer UK retail investors access to the IPO. The listing has been a structural turning point in how retail investors access capital markets both in the UK and globally, opening a window of opportunity for future IPOs.

Winterflood, a division of Marex, played a key role in enabling that retail participation in the UK, acting as a Public Offer Platform (POP) via its proprietary Winterflood Retail Access Platform (WRAP). This was the first time the POP structure was used to provide access to an international IPO, resulting in almost $1 billion of retail demand from more than 100,000 individual UK investors, numbers not seen on a UK retail offer in over 10 years.

 

Key takeaways

• The SpaceX IPO marked a structural shift in UK retail access to global capital markets
• Winterflood enabled participation via the POP regime and WRAP platform
• Nearly $1bn of UK retail demand came from over 100,000 investors
• The POP framework removes barriers for international issuers
• Retail participation is expected to expand across IPOs, bonds, and secondary fundraisings

 

A global retail offer: why the SpaceX IPO was different

SpaceX set itself apart in scale, profile and the way it captured the imagination of ordinary investors. “SpaceX is an entirely unique transaction,” says Joe Winkley. “This is the biggest IPO in history. It is the first time that a global retail offer has ever been undertaken. And the size and the profile of the transaction has really galvanized retail interest.”

The numbers show the same; UK retail demand reached approximately $1 billion, with over 100,000 individual investors seeking to participate. “These are kind of numbers we haven’t seen for a long, long time,” Winkley notes. For him, the broader lesson is about what becomes possible when the right story is told to an engaged and receptive audience. “When you have the right story and it’s presented in the right way, there is significant retail demand that can be accessed. And looking forward, it’s all about how to tap into that demand and bring that into future IPOs. There is an enormous investor base to go after.”

 

The POP regime: a new route to market

Until recently, any company wanting to offer shares to UK retail investors was required to produce a full FCA-vetted UK prospectus and to dual-list their shares in London; a lengthy, costly, and time-consuming undertaking that made it impractical for most international issuers to include UK retail investors in their listings.

The Public Offer Platform (POP) regime is an innovative way to address these challenges while still retaining a robust regulatory framework designed to maintain investor protections. Under the framework, a regulated POP operator can bring an international offering to UK retail investors without the issuer needing to produce a standalone UK prospectus.

Instead, the POP operator takes on a defined set of regulatory obligations with the aim of ensuring that retail investors are able to make considered and informed investment decisions: conducting independent due diligence on the company, reviewing the company’s financial statements and producing a disclosure summary document specifically designed to be accessible to retail investors. The regime therefore allows the UK market to be a destination for international IPOs that would previously have bypassed it entirely.

SpaceX was the first international company to use the POP regime in connection with an IPO and Winterflood was its POP operator, making Winterflood the first to use this new approach for a transaction of this type. Having laid the groundwork, Winkley believes the regime will play a key role in international IPOs going forward, enabling retail investors’ participation.

 

Winterflood’s Retail Access Platform: the infrastructure behind UK retail access

The Winterflood Retail Access Platform (WRAP) was established in 2023 to extend Winterflood’s reach into the primary market from its established position as a liquidity provider for retail intermediaries in the secondary market.

WRAP is a proprietary end-to-end platform that connects issuers, alongside their advisors, brokers, banks and lawyers with retail investors through UK intermediaries such as Hargreaves Lansdown, Interactive Investor, and AJ Bell.

“We’ve built our own platform using our own proprietary technology that allows us to aggregate those orders and then put them into the main book on behalf of the issuer,” says Bechev. Settlement is managed fully in-house, making it a complete solution from order aggregation through to allocation and delivery.

WRAP is not an equity-specific tool, able to support any type of security through to the end consumer via intermediaries. Secondary fundraisings are already a core part of what the platform does, enabling listed companies raising additional capital to access retail investors alongside institutional ones.

In fixed income, WRAP has facilitated 20 gilt transactions for the UK Debt Management Office, with recent transactions raising over £100 million from retail investors.

Corporate bonds are next on the horizon: recent regulatory changes permitting lower-denomination bonds to come to market have opened the door to retail participation in an asset class that has been largely inaccessible to individual investors for the better part of two decades. “I think our view is that over the next six to 12 months, we will start to see corporate bond issuers taking advantage of the new rules, coming to market, raising money from retail,” says Winkley. “It’ll be really fascinating to see how retail respond to this opportunity they just haven’t had for the last 20 years or so.”

 

WRAP’s role in the SpaceX transaction

For the SpaceX transaction, WRAP served as the central aggregation point for all UK retail demand.

Investors who submitted orders through their chosen platform, whether Hargreaves Lansdown, Interactive Investor, AJ Bell or another participating intermediary, had those orders flow through to WRAP, which then channelled a single consolidated order into the main SpaceX book. On the allocation side, the platform’s technology proved its capability at scale: it applied a consistent allocation policy, established by the syndicate banks on behalf of the issuer with minimum fill, scale-back, and maximum cap, across nearly 120,000 individual investor accounts in under 30 seconds.

“This is something which sounds very simple but is actually incredibly complicated,” says Winkley. “To make sure that you are applying a very consistent allocation policy, you are treating every single investor the same — in this instance, we had nearly 120,000 entries in there. And from a technology perspective, the great thing is it worked absolutely perfectly.”

 

Marex’s role

The SpaceX transaction straddled a significant moment for the Winterflood business: the completion of its full integration into Marex on 1 June. “As Winterflood, we would’ve genuinely struggled to have executed this transaction with the complexity and the timescale that we were working towards. But having that wider resource from Marex, coupled to a real kind of entrepreneurial spirit that we’ve seen at Marex, I think it really helped.”

Bechev points to the breadth of Marex’s capabilities as particularly relevant to the regulatory process: “Working for an organisation where you have significant funding and liquidity resources, from a cyber resilience point of view, there are so many areas here where being part of the Marex group has definitely been very helpful in relation to us being able to actually get our POP licence, and satisfy the requirements of the FCA within the timescales.”

 

A precedent for the future

Both Winkley and Bechev are clear-eyed about the significance of the SpaceX transaction as a template for what follows. SpaceX shows how it is possible to bring a high profile IPO to the UK market while maintaining customer protections via the POP regime and, in acting as a POP operator, it was important for us to maintain a focus throughout the transaction on the end retail customer and to ensure consistency of information and consistency of outcomes.

Winkley points to two distinct opportunities. The first is the prospect of other large international IPOs, particularly US technology companies, following SpaceX’s lead. The second, and perhaps more structurally important, is the potential for retail inclusion to become standard practice in the domestic UK market. “What would be great is if it becomes a matter of course for UK retail to be involved,” he says. “We’ve seen that they can participate at scale, and I think the next step is to open that opportunity to wider offerings and wider IPOs.”

Beyond equities, Bechev points to fixed income as a significant and growing area of opportunity. WRAP already supports secondary fundraisings and has facilitated 20 gilt transactions for the Debt Management Office, with recent transactions raising over £100 million from retail investors. Changes to the regulatory framework enabling lower-denomination corporate bonds to come to market are expected to create further demand. “I think that’s really important for retail,” says Bechev, “and WRAP is certainly a distribution tool that can be used to support retail investors through their intermediaries also coming into those types of offerings.”

 

Shifting perceptions of retail

A thread running through the conversation is the need to challenge longstanding assumptions about retail investors. Winkley points out “There is a very common misconception that retail are flippers, which isn’t always the case. By and large, we are seeing that most retail investors are investing to hold for a period of time and actually top up further in the secondary market.”

The scale of latent demand in the UK makes the case for change compelling. With fewer than 8% of UK individuals currently having direct ownership of equities, compared to over 30% in the United States, Winkley frames the opportunity in stark terms. “When you give retail the opportunity to participate, when you give them an equal playing field with institutional investors, they will respond to that, and they will respond in size.”

For Bechev, part of the opportunity lies in simplifying the process for those on the other side of the transaction. “I think historically, retail has been seen as quite complex and tricky and time-consuming, and fingers crossed, the role that we have and the work that we’ve been doing helps demystify that.”