Castle Securities is reportedly planning to expand its Indian team to strengthen local operations.

According to knowledgeable sources, billionaire Ken Griffin's Citadel Securities has hired an options trader this week in India and plans to increase more staff to strengthen its business in India. One of the sources said that the market maker giant has invited Prajual Maheshwari to join Citadel Securities India Markets Pvt., where he previously worked at the high-frequency trading company Aakraya Research.