As of 2015, the best Vanguard fund is Vanguard Long-Term Treasury Investor, basing on current market performance and future success, according to Nasdaq. This fund focuses on sustainable current income.
As of 2015, Vanguard Long-Term Treasury Investor has a current return of 26.6 percent, explains Nasdaq. The long-term treasury has a lesser return than Vanguard REIT Index Admiral found in the real estate category, which has a return of 27.7 percent, but has an expense ratio of 0.20 percent, which is lower than the industry's ratio of 0.67 percent. The fund largely invests in U.S treasury bills and bonds, and it anticipates a maturity period of about 15 to 30 years.