According to CoinMeta, nearly $4.9 trillion in funds are held in target-date funds. Personal finance expert Suze Orman warns that investors may do better by managing their investments on their own. She suggests that Americans, who rely on one of the most popular retirement investments in the United States, may be better off taking control of their own investments. Orman previously warned in her CNBC program that "you will find you do better on your own than by investing in target-date retirement funds." She recently reiterated this warning in her latest post on YouTube, reiterating her views on this type of investment.