1 Soil: Weighs about 2,200 pounds per cubic yard, depending on the moisture content. 2  Sand, Gravel, Stone: Can tip the scales at upwards of 3,000 pounds per cubic yard.
More important is that, for most. bond investors, bond mutual funds and their exchange-traded fund (ETF) counterparts provide a number of advantages over individual bond. portfolios in terms of diversification, cash-flow treatment, portfolio. characteristics, costs, and liquidity.
The interest income that the trust funds earn on their bonds, as well as the proceeds the trust funds will receive when their bonds are redeemed, will enable Social Security to keep paying full benefits until 2034. In 2034, the combined trust funds are projected to run out of Treasury bonds to cash in.