On Falling Neutral Real Rates, Fiscal Policy, and the Risk of Secular Stagnation
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The gap btw risky & safe interest rates has fluctuated significantly over the past decades, standing at 5.5%-points today, driven by factors such as the end of dot-com exuberance & increased demand for safe assets during the China shock.
Found Brad DeLong's thoughts on some of his takeaway from Summer's paper on the ERP interesting
"...Economic and finance professors continue to attempt to understand this large equity return premium as somehow reflecting some market-maker somewhere's attitude toward risk. They fail. They will continue to fail. The gap between the risky discount rate and the safe interest rate is5.5%-points today, was 1%-point 20 years ago, was 7.5% 40 years ago, and was 4% 50 years ago.Most of the time since the development of stock markets that were more than grifter cons for insiders 150 years ago, this gap has been vastly in excess of any rational assessment of the extra risk born from investing in a diversified portfolio of stocks rather than in safe government bonds. But sometimes—1998, when the risk associated with investments in stocks was not low but was unusually high—it is not....tempted by the following narrative to account for the past 20 years' moves in the equity return premium:The end of dot-com irrational exuberance that drives the equity premium up from 1998-2002 with no effect on the *safe interest rate. The financial side of the China shock 2002-2008 that greatly increases the demand worldwide for safe assets.Political risks in emerging markets and economic risks of stalling emerging-market growth greatly increased demand for safe assets like U.S. Treasuries: it seems sensible to hold U.S. Treasuries for that portion of your portfolio which will be the only thing left if the balloon goes up and you have to flee your country in the Learjet, or in a rubber boat. This drives the equity premium up further. The financial crisis's destruction of confidence that any organization besides Global North governments is or will be in the business of providing AAA assets eliminated AAA and near-AAA private close substitutes for Treasuries.This drives the equity premium up still further.The natural conclusion I am tempted to draw—which Łukasz Rachel and Lawrence H. Summers do not—isThe world economy today desperately wants to hold its wealth in claims on Global North sovereigns with exorbitant privilege issuing reserve currencies. A well-functioning economy creates things of value. The Global North sovereigns with exorbitant privilege issuing reserve currencies can create a lot of value. They should do so: governments should run up their debts until they satisfy demand with an equity return premium at a value we think is sensible and "normal"...."
Brad DeLong, "On Falling Neutral Real Rates, Fiscal Policy, and the Risk of Secular Stagnation,"Grasping Reality, March 7, 2019, https://www.bradford-delong.com/2019/03/which-interest-rate-on-on-falling-neutral-real-rates-fiscal-policy-and-the-risk-of-secular-stagnation.html


