Sanford I. Weill is a prominent American banker and businessman known for his significant contributions to the financial sector. He played a key role in transforming Citigroup into a global financial powerhouse during his tenure as CEO. Under his leadership, Citigroup expanded through strategic acquisitions and innovation, making it one of the largest financial institutions in the world. Weill's vision for a diversified banking model reshaped the industry, bringing together various financial services under...