Societe de Tayninh S.A. (TAYN.PA) operates as a real estate investment holding company focused on the acquisition, ownership, and management of tertiary real estate assets, including atypical and alternative properties distinct from those of its parent group; it generates income primarily from cash management under a treasury agreement indexed to the Ester rate and pursues opportunities in existing, under-development, or restructured real estate across varied geographies without predefined market preferences. The company, founded in 1956 and headquartered at 7 Place du Chancelier Adenauer, 75016 Paris, France, is a wholly owned subsidiary of Unibail-Rodamco-Westfield SE, which holds 97.68% of its capital, and relies on group entities for administrative, financial, legal, and accounting support through service agreements providing expertise in outsourced functions. Its core activities encompass asset management and capital investments with no current operating revenues, subsidiaries, or material physical assets beyond liquidity of approximately 17 million euros as of late 2023, reporting a net income of 586,450 euros trailing twelve months on zero revenue and maintaining a market capitalization around 21-27 million euros. Since ceasing portfolio management activities in 2006, Societe de Tayninh exhibits no operational business and limits itself to liquidity management while actively seeking real estate investments aligned with its size, risk profile, leverage capacity, and SIIC tax regime constraints. In recent developments, Unibail-Rodamco-Westfield SE divested its 97.68% stake, enabling a public offer and acquisition by TBSO as advised by Avolta, marking a major ownership transition and potential strategic realignment in 2025; the company released its 2024 annual results and continues treasury operations yielding positive financial results amid Ester rate volatility protected by a 0.05% floor.