Zerodha’s Nithin Kamath shares simple hack to save tax, avoid impulse selling: ‘Best returns were on stocks that…’ by Live mint | September 10, 2025 6:04 pm | Indian Stocks, Market, News Nithin Kamath, co-founder and CEO of discount broking platform Zerodha, shared a powerful insight from his own investing journey that sheds light on a simple yet effective behavioural and tax strategy — using a secondary demat account.