It had a real yield negative to inflation. And it was a winner.
By David Enna, Tipswatch.com
One of the basic rules of investing in Treasury Inflation-Protected Securities is: Get the highest possible real yield and ignore all the other noise.
But it doesn’t always work that way. Let’s time-shift back to the depressing early days of the COVID pandemic, when stock and bond markets were reeling. On April 23, 2020, the Treasury auctioned a new 5-year TIPS, CUSIP 912828ZJ2, with a real yield of -0.32%.
In other words, this new TIPS was guaranteed to under-perform inflation by 0.32% over the next five years. That was totally undesirable, right?
Wrong. At the time, a 5-year nominal Treasury was yielding just 0.37%, meaning this TIPS got an inflation breakeven rate of 0.69%. a wildly low number. Investors were betting that inflation would average just 0.69% from April 2020 to April 2025.
As often happens, investors were very wrong. In fact, inflation over the last five years has averaged 4.3%. And so investors in CUSIP 912828ZJ2 did much better than investors in a nominal Treasury at the time.
We know CUSIP 912828ZJ2’s final return because the February inflation report issued on March 12 set its inflation index at 1.23240 as of April 15, the maturity date.

The data page for this TIPS on EyeBonds.info shows it produced a nominal return of 3.904%, crushing the 5-year Treasury’s note return of 0.37% by an annual margin of 3.61%. That was a direct result of the soaring inflation we saw beginning just a year later, rising to 4.2% in April 2021 and topping off at 9.1% in June 2022.
Here are data for all 5-year TIPS that have matured since April 2012. Note that the early trend of under-performance has dramatically shifted because of the ultra-high inflation of recent years.

To view this chart at a glance, the annual variance number in the last column shows how the inflation breakeven rate compared to actual 5-year annual inflation. When the numbers are green, a TIPS was the superior investment. When they are red, the nominal Treasury was the better investment.
Fair warning: The next decade could be entirely different, especially since inflation breakeven rates are now running much higher, around 2.4%.
Big winner: The I Bond
Here things get interesting. In April 2020, you could have invested in an Series I Savings Bond with a fixed rate of 0.20%, which seems crazy but again demonstrates the lagging effects of the Treasury’s fixed-rate decisions. That fixed rate was set in November 2019, when 5-year real yields were higher. It remained in effect until the end of April 2020.
Clearly, an I Bond with a fixed rate of 0.20% is going to outperform a TIPS with a real yield of -0.32%. Data on EyeBonds.info show a $10,000 purchase of this April 2020 I Bond is now worth $12,412, for an annual return of about 4.4%.
Notes and qualifications
My TIPS vs. Nominals chart is an estimate of performance.
Keep in mind that interest on a nominal Treasury and the TIPS coupon rate is paid out as current-year income and not reinvested. So in the case of a nominal Treasury, the interest earned could be reinvested elsewhere, which would potentially boost the gain. For certain, we don’t know what the investor could have earned precisely on an investment after re-investments.
In the case of a TIPS, the inflation adjustment compounds over time, and that will give TIPS a slight boost in return that isn’t reflected in the “average inflation” numbers presented in the chart.
• Confused by TIPS? Read my Q&A on TIPS
• TIPS in depth: Understand the language
• TIPS on the secondary market: Things to consider
• TIPS investor: Don’t over-think the threat of deflation
• Upcoming schedule of TIPS auctions
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Follow Tipswatch on X (Twitter) for updates on daily Treasury auctions and real yield trends (when I am not traveling).
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David Enna is a financial journalist, not a financial adviser. He is not selling or profiting from any investment discussed. I Bonds and TIPS are not “get rich” investments; they are best used for capital preservation and inflation protection. They can be purchased through the Treasury or other providers without fees, commissions or carrying charges. Please do your own research before investing.



I was happy to get the nearly 2% above inflation on this issue. I'm also still nibbling at long-term bonds…