This is a passive ETF that tracks the Bloomberg 1-10 Year US Treasury Inflation-Linked Index. It holds only US TIPS with 1 to 10 years remaining to maturity. Principal is linked to changes in the Consumer Price Index (CPI), so when inflation rises, both principal and interest payments are adjusted upward.

It suits bond investors who want a medium- to long-term inflation hedge but also want to reduce the interest rate risk typical of long-term bonds.

It is a passive (index-tracking) ETF launched in 2007 by State Street (SSGA).

The fund selects and holds only the short- and medium-term maturity segment of TIPS issued by the US Treasury. Because principal is linked to the Consumer Price Index, principal and interest are automatically adjusted upward when prices rise. By excluding long-term bonds with maturities beyond 10 years, the structure eases duration risk from interest rate changes.

• Maturities of 1 to 10 years limit interest rate sensitivity compared with long-term bonds
• Holds only US Treasury-issued bonds, so there is no credit risk

Assets under management (AUM) stand at $2.1B, and the expense ratio is 0.15% per year.

Compared with TIP, a TIPS ETF with longer maturities, its duration is shorter, so prices tend to fall relatively less during periods of rising interest rates.

When price pressures build, the principal adjustment effect of TIPS comes to the fore, and returns tend to improve. Conversely, when inflation expectations decline or real yields rise, prices may be adjusted downward, although given their short- and medium-term maturities, price swings are limited compared with long-term TIPS.

When inflation concerns intensify, capital tends to flow into inflation-linked bond ETFs as a whole. Short- and medium-term TIPS in particular are used as a defensive position compared with long-term bonds in environments of high interest rate uncertainty, and fund flow patterns often move in step with releases of macro inflation data.

The fund is structured to pursue an inflation hedge and reduced interest rate sensitivity at the same time, but its drawbacks become apparent in a deflationary environment or when real yields rise.

Within the inflation-linked bond category similar to TIPX, there are several products worth comparing. If you want a broader maturity range, iShares' TIP and Schwab's SCHP are direct substitutes: TIP tends to offer high liquidity, while SCHP is competitive on fees. If you want to focus more on short-term TIPS, you can compare Vanguard's VTIP (0 to 5 years), and for a product specialized in long-term TIPS, PIMCO's STPZ. TIPX covers the middle 1 to 10 year segment between these, seeking a balance between interest rate sensitivity and inflation hedging.

Here are the points to verify before investing in TIPX. Inflation-linked bonds suit the purpose of hedging inflation, but it is important to fully understand real yield movements, the USD exchange rate, and the tax treatment structure in advance.

In periods when inflation comes in below market expectations or real yields rise quickly, TIPS are also exposed to the risk of price declines. The tax treatment of increases in inflation-adjusted principal should also be confirmed before investing.

This is a bond ETF suited to investors who want to maintain inflation protection through short- and medium-term TIPS while lowering interest rate sensitivity. It is generally used tactically during periods of rising prices rather than held for the long term, or included as the inflation hedge portion of a bond portfolio.