WeeFin

WeeFin

WeeFin was founded in 2018 by Grégoire Hug, a former head of risk and performance at BNP Paribas Securities Services. He launched the firm alongside co-founders Marion Aubert and Guillaume Klech to address a specific operational gap: institutional investors were drowning in manual ESG data tasks without a centralized, traceable system. The firm has since scaled from a fintech startup into a recognized specialist in digital sustainable finance. The platform serves as a golden source for ESG data, combining automation with no-code methodology builders. Asset managers use it to replace spreadsheets and emails with auditable workflows across asset classes including listed equities, fixed income, and private markets. The service covers the full regulatory chain — SFDR 2.0, Article 29 LEC disclosures, and proprietary reporting — and spans major European markets. WeeFin does not publish a client list, but its website frames the tool as enterprise-grade infrastructure for professional investors across the EU. WeeFin surpassed 100 employees by 2025, a headcount that quadrupled under people director Julie Truong, who joined in 2022 from the WWF. The leadership team expanded in July 2025 when Matthias Breier arrived from FE Fundinfo as head of product, bringing doctoral expertise in business model innovation from Finland’s Lappeenranta University. Co-founder Marion Aubert was named to the Forbes 30 Under 30 list in 2025, the same year she took charge of the firm’s UK expansion. The C-suite also includes COO Laura Aich, who previously structured operations at Meeschaert Amilton AM. WeeFin’s structural distinction is its stance on ESG intellectual property. Traditional providers license black-box ratings; WeeFin gives clients the tools to build, trace, and own their sustainability methodologies directly. That turns a regulatory burden into a differentiator for asset managers who need to defend their ESG claims to LPs and regulators.