The pharma magnate, also known as DBG, is richer by $1.6 billion as shares of his generics firm Lupin surged on rising profits. Eyeing global expansion, daughter Vinita and son Nilesh, who run operations, acquired Dutch firm Nanomi, which makes complex injectable products, and then entered Mexico with the acquisition of Laboratorios Grin, maker of ophthalmic products. Japan is big on their radar; they have a new joint venture with Yoshindo to develop biosimilar drugs in the country.