The wisest and most successful bond investor of all time, Bill Gross, has dumped his bond fund’s $150 billion investment in U.S. bonds. One should not ignore the importance of this event. The largest bond fund in America no longer believes that Treasury bonds are a good investment. Moreover, Gross is not alone. Blackrock, the world’s largest money manager, is now underweighting Treasuries overall and reducing the duration of the bonds it still holds. That means they are dumping their long-term bonds, which are the most sensitive to interest-rate changes, in favor of Treasury instruments that mature in a year...