Zerodha's Margin Trading Facility (MTF) has secured 5% market share within a year of its launch, despite limited promotion and a late entry into the segment. Founder Nithin Kamath highlighted that retail investors often overlook or are unaware of MTF brokerage costs. He noted that Zerodha's current charges are significantly lower than many competitors, suggesting a substantial revenue increase if they adopted higher rates, but emphasized the importance of cost awareness for long-term investor returns.