By David Enna, Tipswatch.com
On July 15, an ugly-duckling 10-year Treasury Inflation-Protected Security matured. It was CUSIP 912828WU0, first auctioned on July 24, 2014.
I call it an ugly-duckling because the auctioned real yield was 0.249%, setting its coupon rate at just 0.125%, the lowest the Treasury will go for any TIPS. In addition, on auction day it got a inflation breakeven rate of 2.26%, rather high at a time when U.S. inflation was hovering around 2.0%.
In my preview article on this auction, I wasn’t a huge fan:
It’s possible that this new TIPS will auction with the lowest yield to maturity for any 9-to 10-year TIPS since May 2013, when the yield was -0.225%. Since then – for six consecutive auctions – the lowest yield to maturity has been 0.339%.
Nevertheless, CUSIP 912828WU0 turned out to be a fine investment, at least compared with a nominal 10-year Treasury note, which was yielding 2.51% on the day of the auction. Inflation over the next 10 years ended up averaging 2.8%, making this TIPS a better investment by a wide margin with an annual advantage of 0.538% in yield over the 10 years.
Data from Eyebonds.Info show this TIPS produced an annualized nominal yield of 3.048% over the 10 years, much higher than the 10-year note’s 2.51%.

I didn’t buy this TIPS at that auction, but I jumped aboard on the Sept. 18, 2014, reopening auction, when the real yield rose to a more attractive 0.610%. On that day, the 10-year Treasury note had a nominal yield of 2.63%, creating a breakeven rate of 2.02%. The September purchase was also a winner, with a nominal return of 3.445%:

TIPS versus an I Bond
If you purchased an I Bond in July 2014, it had a fixed rate of 0.10%, below the real yield of 0.249% for the TIPS at the original auction. That I Bond has produced a nominal return of about 2.94% according to Eyebonds.info. So the TIPS is the winner, but not by a great margin. The I Bond benefits from better compounding, since all interest payments are added to principal until redemption.
Thoughts
TIPS have been on a winning streak for several years, caused by the surge to 40-year high inflation that peaked in June 2022 at 9.1%. Even today, annual inflation is running higher than the auctioned breakeven rates of 2014. And so TIPS have been the winners versus nominal Treasurys, at least recently.
Notes and qualifications
My chart is an estimate of performance comparing inflation breakeven rates versus actual inflation.
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.
• Now is an ideal time to build a TIPS ladder
• 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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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.













As others noted, yields seemed be 1.85 or so and this is a surprise. I have a theory, "Sell America"…