There’s a Bond ETF That Resets Its Income for Inflation Every Six Months. Almost None of Your Friends Own It.

A lot of investors instinctively reach for commodities when they think about inflation hedging. And to be fair, that makes sense on paper. Energy prices rise during inflation shocks. Gold often performs well when fiat currencies weaken. Infrastructure and real estate can sometimes pass rising costs onto customers through toll increases, rent hikes, or regulated pricing structures.

The problem is that many of these so-called inflation hedges still come with substantial market risk. Commodity producers are still stocks. Real estate can get hammered by rising interest rates. Infrastructure often carry significant debt loads and equity market sensitivity. In a bear market, these assets can still fall sharply alongside the stock market even if inflation remains elevated.

That creates a problem for retirees. If you are retired and trying to shield your portfolio from inflation, you usually are not looking for maximum upside. You are trying to preserve purchasing power while avoiding excessive volatility and large drawdowns that could permanently damage your retirement income stream.

That is where Treasury Inflation-Protected Securities, or TIPS, become useful. Unlike stocks, commodities, or real estate, TIPS are specifically designed to adjust for inflation directly while still maintaining the backing of the U.S. Treasury. One ETF that packages this into a very low-risk format is the iShares 0-5 Year TIPS Bond ETF (NYSEARCA: STIP). Here is how it works.

Understanding TIPS

Most bonds are what we call nominal bonds. Their coupon payment is fixed when the bond is issued. The yield investors receive can fluctuate because the market price of the bond changes in the secondary market, but the coupon itself stays constant.

TIPS work differently. With TIPS, the face value of the bond adjusts every six months based on changes in the Consumer Price Index, or CPI. If inflation rises unexpectedly, the principal value of the bond gets adjusted upward. Because the coupon payment is calculated as a percentage of that inflation-adjusted principal, the interest payments rise too.

That is the key distinction here: unexpected inflation. For example, if inflation suddenly spikes because of an oil shock, supply chain disruption, or geopolitical conflict, nominal bonds can suffer badly because their fixed coupon payments lose purchasing power. TIPS, on the other hand, automatically adjust upward to compensate for that inflation shock.

But if inflation simply comes in roughly where markets already expected it to, then TIPS do not provide much additional benefit because that expectation was already priced into yields beforehand. Over the very long term, nominal Treasury bonds generally should outperform TIPS by a modest amount because investors demand compensation for bearing inflation uncertainty. TIPS sacrifice some expected return in exchange for protection against inflation surprises.

Importantly though, these are still U.S. Treasury securities backed by the full faith and credit of the federal government. While U.S. debt is no longer rated AAA by every ratings agency, Treasuries are still widely treated as the global “risk-free” benchmark for financial markets. And like regular Treasury securities, income from TIPS is exempt from state and local taxes, although still subject to federal taxation.

How STIP Puts TIPS Into Practice

Buying individual TIPS directly can honestly be a bit cumbersome for retail investors. TreasuryDirect is functional, but the platform’s user interface is not exactly known for being modern or intuitive. The easier route is simply outsourcing the process to an ETF like STIP.

STIP tracks the ICE U.S. Treasury 0-5 Year Inflation Linked Bond Index and charges an extremely low 0.03% expense ratio. What makes STIP particularly attractive for retirees is its very short duration profile. Right now, the ETF has an average duration of just 2.39 years and a remarkably low three-year standard deviation of only 1.74%.

That combination means interest rate volatility is relatively muted. Longer-duration TIPS funds can still suffer significant drawdowns when rates rise rapidly, which partially defeats the purpose of an inflation hedge for conservative investors. STIP’s shorter duration helps reduce that risk substantially.

Right now as of May 18th, STIP has a real yield of 1.76%, but the quoted 30-day SEC yield is a much higher at 10.57%. That huge difference can look confusing at first glance, but it mostly comes down to how TIPS handle sudden inflation spikes.

The SEC yield for a TIPS ETF is adjusted daily based on changes in the Consumer Price Index, because the inflation adjustment on the underlying bonds accrues continuously. When inflation suddenly accelerates over a short period (as it just did), those inflation adjustments can temporarily cause the SEC yield to surge upward as well.

Importantly though, that does not necessarily mean investors should expect a permanent double-digit yield going forward. The spike largely reflects a recent jump in inflation data flowing through the TIPS adjustment mechanism. If inflation moderates again, the SEC yield would likely fall as well.