The Janssen lineage established its influence in the financial sector at the very origins of Belgium. The family's emblematic figure is Baron Emmanuel Janssen, whose matrimonial alliance with Jeanne Solvay enabled him to become an integral part of the family. in the Solvay dynasty,<\/a><\/strong> recognized for its flagship company in the chemical sector<\/a>. Born at the dawn of the 20th century, he played a key role in the rise of the chemical company. Solvay<\/a>where he focused in particular on their bank Mutuelle Solvay.<\/strong><\/p>\n\n\n\n The Janssen fortune<\/a> has also crystallized around the pharmaceutical industry with UCB, a giant in the sector. They maintain their footprint thanks to holdings Financi\u00e8re de Tubize<\/a> and Obourg, key to their lasting influence on the company's capital.<\/p>\n\n\n