Kotak Securities is a leading online stock trading company in India and is a 100% subsidiary of Kotak Mahindra Bank. It offers various trading account types for different needs, including AutoInvest for investment planning and Kotak Gateway for beginners. Trading can be done in BSE and NSE. Brokerage fees are variable based on trade type and amount traded. Accounts can be opened online, by phone, or by visiting a local branch. Standard documents like address and identity proof are required.