Shares Acquires Treezor from Société Générale to Build European Financial Infrastructure Giant

Shares has finalized its acquisition of Treezor from Société Générale, marking a significant consolidation in the European Banking-as-a-Service market. By integrating Treezor’s payment and account infrastructure with its own investment technology, Shares aims to provide a comprehensive financial stack for institutions seeking to deploy end-to-end savings and wealth products across the continent.

What was announced

Shares has completed the purchase of 100% of Treezor’s shares from Société Générale, following the satisfaction of all regulatory and closing conditions. This transaction transitions Treezor into the Shares Group, creating a combined entity that bridges the gap between traditional embedded finance and modern investment solutions. The move is a strategic response to the evolving needs of European financial institutions that are looking to modernize their legacy systems and accelerate the deployment of new products.

Historically, the European Banking-as-a-Service (BaaS) sector has focused on core functionalities such as ledger management, card issuance, and payment processing. This acquisition is designed to address a shift in market demand, where businesses increasingly require infrastructure that supports the entire customer financial journey. By combining Treezor’s established European footprint and regulated capabilities with Shares’ proprietary technology, the group aims to offer an integrated infrastructure for accounts, payments, savings, and investment.

The transaction marks a major milestone in the development of Shares, allowing it to provide an end-to-end offering. This unified technology stack is intended to serve both fintech startups and established financial institutions, helping them reduce time-to-market for complex financial applications. Cédric Cassini, General Manager at Treezor, noted that the combination provides the necessary capabilities to build a truly integrated financial infrastructure at a European scale, moving beyond the limitations of standalone payment platforms.

"The completion of this acquisition marks the creation of a new group. We are bringing together highly complementary areas of expertise around a shared conviction: transforming financial services in Europe requires infrastructure capable of covering the entire value chain, from accounts through to investment. This is the infrastructure we will now build together with the Treezor teams, with the ambition of playing an active role in shaping and consolidating Europe’s digital financial ecosystem."

Benjamin Chemla, CEO and co-founder, Shares Group.

The companies involved

Shares is a fintech firm specializing in investment and savings technology. It has developed a platform designed to make wealth management more accessible, providing the technical framework for modern investment solutions. The company has previously been the subject of three reports by FF News. Treezor is a prominent European provider of Banking-as-a-Service, offering a range of regulated services including payment processing, account management, and card issuance. Founded to simplify the launch of financial services, Treezor provides the underlying regulated technology that allows businesses to offer white-labeled banking products. Treezor has been featured in one previous FF News report.

Before this acquisition, Treezor was a subsidiary of the French banking giant Société Générale, which had acquired the firm to bolster its own digital transformation and embedded finance capabilities. Société Générale, one of Europe’s leading financial services groups, has a long-standing presence in the global banking market and has been covered extensively by FF News in 25 separate reports. The divestment of Treezor marks a shift in its relationship with the BaaS provider, though the bank’s executives, including André Gardella and Frédéric Delassalle, have been credited with supporting Treezor’s growth during its tenure under the group’s ownership.

What this means

The European fintech landscape is shifting from "unbundling" to "re-bundling," but at the infrastructure level. This acquisition signals a maturation of the Banking-as-a-Service market, moving away from fragmented service providers toward unified platforms. By bringing investment capabilities under the same roof as core banking, Shares is putting pressure on traditional BaaS players who only offer payments and ledger services. The industry is currently facing a demand for deeper integration; clients no longer want to stitch together multiple vendors for banking and wealth. This move raises questions about whether other specialized providers will be forced into mergers to remain competitive as the line between banking and investing continues to blur.