India's online investment platform smallcase has raised $50 million in a Series D funding round led by Elev8 Venture Partners.The funds will be used to expand smallcase’s investment product offerings and strengthen retail investor engagement.smallcase plans to add mutual funds, fixed income instruments, and other asset classes to its product lineup.The company recently partnered with online brokerage platform Zerodha to launch an asset management company focused on index funds and ETFs.