A Conventional gold is a reliable guy. It is fairly predictable until maturity, with returns rising or falling broadly consistent with its siblings.
But his wayward cousin, the leftist, has no intention of leaving quietly. With a life expectancy of lower than a yr, index-linked gilts appear to shed the shackles of convention and lose all inhibitions. Yields rise and fall worryingly.
What is the explanation for such inappropriate behavior? And can investors profit from it?
Leftists have gone wild
Here is the March 22, 2026 index-linked government bond yield for the yr to maturity (blue) in comparison with that of the 2027 and 2028 linkers:
(All yield data comes from .)
These three linkers start the yr with similar real returns. But between June and July – about nine months before maturity – the 2026 yield suddenly jumps. The others barely move.
Linker returns reported on Tradeweb (and elsewhere) don’t take inflation effects into consideration. They show the true return – what your return could be if inflation were zero.
The actual return will likely be the true return above plus RPI (to get replaced by CPIH in 2030). You will only know this in hindsight, when all relevant inflation reports are published by the ONS.
A likelihood?
You might think this wild rise in yields could be a chance for a number of months of upper returns on idle money.
At least I hope you possibly can be forgiven. Because that was the error I made.
But before we delve into why there aren’t actually any easy additional returns here, it’s price illustrating that this late-stage return movement is just not unusual.
The 2024 linker
The last index-linked government bond that matured before 2026 was the March 22, 2024 issue. It also had a coupon rate of 0.125%.
Here is the plot of the yield in comparison with the 2 closest competitors leading as much as maturity:
Here too, the returns differ significantly around nine months before maturity.
The Linker 2022
Just for fun, here’s the Linker’s wild final ride, due 11/22/2022, in comparison with its closest peers:
This time there may be more of a decline in yields than a rise. What is more remarkable, nevertheless, are the staggering negative returns.
But let’s leave the madness of a post-pandemic inflation spike and a crazy mini-budget behind us and get back to that late yield spike on the 2026 linker.
inflation
Inflation clearly plays a central role in index-linked pricing of presidency bonds.
Check out the annual RPI change below. Nothing seems to emerge that may explain the sudden change in yield on Linker 2026:
However, the worth of index-linked government bonds doesn’t increase with annual inflation. It rises (and sometimes falls) with the way more volatile monthly changes within the index:
Advance warning
Since (most) linkers use a three-month RPI lag – and inflation data is released with a number of weeks lag – investors know among the future indexation upfront (as outlined within the DMO). Regulate).
For example, the RPI value for January 2026 was released on February 18th. This value is included within the index ratio that’s applied to Linker in March. So on February 18, investors already know what increase in inflation the bond will experience over the following six weeks.
If a linker runs for a number of years, this advance warning doesn’t inform you much concerning the likely overall return. But for those who undergo the previous couple of months to maturity, that will definitely be the case.
Impact on yield
As a linker approaches maturity, a growing portion of the remaining inflation increase is already determined by published RPI data, which has yet to be fed into the index ratio applied to linkers.
Once this future increase is understood, the value of the bond adjusts accordingly, reflected in a movement within the quoted real yield.
With only a number of months left until maturity, even small changes within the expected total return may end up in large swings when expressed as an annualized return.
The linker yield 2026
We can observe a pointy increase in RPI in April 2025, where corresponding increases within the linker’s principal and rates of interest would play out in 2026 throughout June.
So, as June progresses, the market works to extend the true yield to compensate, as more of April’s gain is locked in and the prospect of a smaller future rise in inflation.
This explains the rise we saw previously within the yield chart for the 2026 linker.
Coincidentally, there may be also a pointy increase in RPI in April 2023, which might even be answerable for the June yield increase for the 2024 linker.
Add all of it up
Below I even have shown a comparison of the annual inclusive return of the linker 2026 and the corresponding return offered at the moment of the traditional government bond due on January 31, 2026.
“Inclusive return” here means the overall return including inflation indexation – the true return plus RPI increase.
Obviously, you didn’t know on the time what the overall return could be. But we all know this in hindsight, now we’ve got all of the inflation data:
Although the overall return for the linker increases by three or 4 percentage points in 2026, the overall return doesn’t change by way more than a degree after which way more slowly.
The fluctuations in total return since June simply smooth out the monthly fluctuations in RPI to supply an expected total return that is just not 1,000,000 miles away from what you can get with a standard Treasury bond with the same maturity date.
This is about what you’d expect from an efficient market.
These seemingly sharp movements in real yields are literally just the market doing its job – taking into consideration the inflation data that investors already know.
Not so wild leftists?
Disappointingly, despite my moderately daring title, The Last Year of a Linker is not wild in any respect. It looks very very like the last yr of conventional gold plating.
In other words, a bit like holding money.
In fact, funds just like the Vanguard UK Inflation-Linked Gilt Index and the iShares £ Index-Linked Gilts ETF (each based on the Bloomberg UK Government Inflation-Linked Float Adjusted Bond Index) are selling government bonds of their final yr. At this point there is not much inflation protection left in them.
the Hangover
Experienced Linker investors already know all this. I believe that some people are actually rolling their eyes – assuming, after all, that they’ve come this far.
But I only began getting involved with linkers last yr. And I jumped into the center of the yield rise to see what would occur. Only when I even have invested some money can I apparently focus my attention sufficiently on learning different instruments.
My future – wiser – self now knows:
- We must not confuse a short lived increase in headline linker returns with the true prospect of higher returns.
- Consider the built-in effect of the previous couple of RPI values when assessing the worth of a linker approaching maturity.
- There is nothing exciting about Linker during the last yr and there could be very little to be gained by buying or selling it during this era.
So I didn’t get wealthy, but I did learn something – and that was getting the very best return you can ask for. (Just like I used to be told when he agreed to let me write for…)
