Nasdaq-100 emerged as the biggest wealth creator over 10, 15 and 20 years, delivering returns of 26.5%, 26% and 21.3%, respectively, according to FundsIndia Research. Among Indian equity indices, the Nifty Midcap 150 TRI delivered the highest 20-year return at 16.3%. Gold returned 13.9% over the same period, while real estate delivered a 7.9% return.