Treasury Inflation-Protected Securities adjust their principal with the Consumer Price Index, but that does not make every TIPS fund immune to losses when inflation rises. The iShares TIPS Bond ETF lost money in 2022 even as U.S. inflation peaked above 9%, because rising yields pushed down the market value of the bonds it owned.
The missing concept is duration, a measure of price sensitivity to changes in yields. BlackRock's March 2026 fact sheet reported an effective duration of 6.41 years for TIP. As a rough approximation, a one-percentage-point rise in relevant yields could reduce the portfolio's price by about 6.4%, before accounting for other factors.
Inflation protection and rate risk can move in opposite directions
A TIPS bond's principal increases with inflation, and its coupon is applied to that adjusted amount. But the bond still trades in a market. When real yields rise, existing securities become less attractive and their prices fall. In 2022, that price effect was large enough to outweigh much of the benefit from inflation adjustments.
An investor who owns an individual TIPS bond until maturity can focus more on the inflation-adjusted principal ultimately repaid, subject to the bond's terms. An ETF has no single maturity date. It continually holds and replaces securities, so shareholders remain exposed to daily market prices and the portfolio's duration.
That distinction changes how investors should choose a fund. A long-duration TIPS ETF can gain when real yields fall, but it can suffer when yields rise. An ultra-short TIPS fund reduces that second bet by owning securities close to maturity, though it also gives up some potential price appreciation in a falling-rate environment.
How to use the information
Investors should check effective duration, maturity exposure, expense ratio and distribution variability before treating a TIPS ETF as a simple inflation hedge. A distribution increase does not guarantee a positive total return, and a fund with inflation-linked bonds can still be volatile.
TIP is not defective because it carries duration. It is a broad portfolio designed to provide exposure to U.S. inflation-protected Treasuries. The problem arises when an investor expects inflation protection without recognizing the interest-rate sensitivity packaged alongside it.
The practical lesson is simple: match the fund's duration to the risk you actually want. If the goal is mainly short-term purchasing-power protection, lower-duration exposure may be more precise. If the investor expects real yields to fall and can tolerate price swings, a broader TIPS fund may offer more upside.