30-Year 2-1/8% Treasury Inflation-Indexed Bond, Due 2/15/2040 (DTP30F40)

Source: Haver Analytics  

Source: Dow Jones & Company  

Release: Daily Treasury Inflation-Indexed Securities

Units:  Percent, Not Seasonally Adjusted

Frequency:  Daily

Yield to maturity on accrued principal.
Treasury Inflation-Protected Securities, or TIPS, are securities whose principal is tied to the Consumer Price Index (CPI). The principal increases with inflation and decreases with deflation. When the security matures, the U.S. Treasury pays the original or adjusted principal, whichever is greater.
Copyright, 2016, Haver Analytics. Reprinted with permission.