
US shutdown prompts Treasury to activate fallback index

The United States federal government shutdown that’s threatening to freeze October’s inflation report is forcing the Treasury to use a fallback index for TIPS pricing for the first time, which would create short-term pricing uncertainty requiring traders to adjust their calculations. The U.S. Treasury is planning to deploy a workaround to compute the index in the absence of official data that underpins the US$2.1 trillion market for inflation-protected bonds for the first time since their launch in 1997. The absence of official inflation data is creating a headache for Treasury Inflation-Protected Securities (TIPS) market participants, as the value of those bonds, which investors use to protect their capital from inflation, hinges directly on the index. While TIPS pay a fixed interest rate, the interest is calculated on a principal amount that rises with inflation and falls in periods of deflation. How much the principal rises or falls is determined by the CPI index. TIPS yields, also known as ‘real yields’ because they discount inflation, have increased slightly over the past few days, which is understood to reflect uncertainty over their pricing in the absence of CPI data. "There's definitely uncertainty in t







