there has been a gradual switch towards adopting CPI. Since the arithmetic average of a set of numbers is (almost) always greater than the geometric average, this difference causes RPI inflation to be systematically higher than CPI inflation. One can think of the CPI as the exchange rate that converts the return on a bond investment to real return. As mentioned above, the sole lender for the first CPI-linked sterling bond was a pensions insurer. British government began issuing inflation-linked, gilts in 1981. Inflation Risks and Products (Dec. CPI draws from a wider population base than RPI. The bond's cash flows are adjusted to ensure that the holder of the bond receives a known real rate of return. Given that CPI tends to grow at a lower rate than RPI, the cash-flow schedule is less skewed towards maturity, thus lowering the duration of the bond.

The f irst semiannual coupon.25 paid on the inflation-adjusted principal of 1,020. Daily inflation-indexed bonds are bonds where the principal is indexed to inflatio n or deflation. As of 2008, government-issued inflation-linked bonds comprise over.5 trillion of the international debt market. Daily inflation- indexed bonds pay a periodic coupon that is equal to the product of the daily inflation index and.

"Global Inflation-Linked Products: A User's Guide". . Oxford: Oxford University Press. The CPI index ratio represents by how much CPI is forecast to increase from the issue of the bond. 5 6 Inflation-indexed bond indices edit See also: Bond market index Inflation-indexed bond indices include the family of Barclays Inflation Linked Bond Indices, 17 such as the Barclays Inflation Linked Euro Government Bond Indices, and the Lehman Brothers.S. This type of bond is valuable to investors because the real value of the bond is known from purchase and the risk involved with uncertainty is eliminated. Over time, a shift in regulatory policy towards linking price rises to CPI would widen the pool of potential borrowers in the CPI-linked bond market. First, as shown in Figures 4 and 5, RPI has historically been higher than CPI in most years, with the exception of 2009 when it was negativeprimarily due to a sharp fall in house prices and mortgage payments following the financial crisis (these items are. The Origins of Value: The Financial Innovations that Created Modern Capital Markets. The CPI level at the time of issuance is 204.