Equity mutual funds betting on information technology stocks, mid-caps and small caps have yielded the highest returns for investors who put money in these products through Systematic Investment Plans (SIPs) in the past decade. The average SIP returns from the universe of equity schemes are 16.09% (annualized) for a 10-year period, according to an ET study of Value Research data. SIPs in Sensex and Nifty returned 16.19% and 15.92%, respectively, during the period.