Bengaluru-based wealthtech startup Scripbox is in talks to raise $15-20 Mn at a valuation of $200 Mn.The company aims to get listed on stock exchanges in the next 18-24 months.Last year, Scripbox secured a funding of $5 Mn at a post-money valuation of $138 Mn.Scripbox allows users to invest in mutual fund schemes and offers financial planning services through its AI-powered tech stack.