The delivery of a type of these things can be postponed via a “wild card option,” which gives parties a few extra hours. Between 1877 and 1930 in the US, consols were examples of the “perpetual” type of these things. TIPS are an inflation-indexed example of these things, adjusted based on the CPI. Using an overlapping-generation model, Robert Barro determined these things should not be perceived as net wealth. Interest payments received by holders of these assets are called coupons. To increase liquidity, central banks purchase long-term (10[1])examples of these assets in quantitative (10[1])easing. Series EE and Series I (“eye”) types of these assets are issued by the Treasury. For 10 points, (10[1])what securities issued by the government are often considered less risky than stocks? ■END■