Wealthtech platform Groww’s revenue mix will continue to evolve as its newer businesses scale up, cofounder and chief executive Lalit Keshre told ET in an interview, citing the rapid growth of its wealth offerings from a small base.Revenue from equity derivatives and stock trading accounted for 68.4% of Groww’s total income in the June quarter, down from 75.7% a year earlier, as newer businesses such as margin financing increased their