AUG · ISSUE 33 · August 11, 2026
CONCEPTHeadline vs core inflation: why they ignore your gas
There are two ways to measure inflation. One rules the headlines; the other rules the Fed. Knowing which is which changes everything.
HEADLINE
ALL
includes food and energy
CORE
MINUS 2
strips food and energy
THE FED WATCHES
the 2nd
the real trend
THE IDEA
2 measures
same basket, different read
Headline inflation includes every price. Core strips out food and energy, the most volatile ones, to see the underlying trend without the noise of a single month.
CONCEPT
SIMPLE RULE2
2
the categories core removes
The price of gas can move 20% in a month on a distant headline. The Fed can't raise or cut rates over that.
These are the two categories core inflation strips out: food and energy. Not because they don't matter, but because they jump too much.
- ENERGY
- — Gas, heating, electricity; prices highly sensitive to geopolitics.
- TREND
- — The underlying direction of data, without the one-off noise.
KEY IDEA
TO GET ITCentral banks don't set rates over a single month
“The inflation that matters for rates isn't the headline number, it's what's left once you strip the noise.”
One isolated print misleads. Monetary policy follows the steady signal, not the month's headline.
- MONETARY POLICY
- — A central bank's rate and intervention decisions.
- NOISE
- — Passing moves that hide the real trend.
ILLUSTRATION
EXAMPLEHeadline jumps; core barely flinches
Headline can scare or soothe in a single month on energy. Core tells the real story, duller and more reliable.
Illustrative example: the headline line bounces with energy, while core (the band) stays steady.
- BAND
- — The steady reference level that represents the trend.
- ILLUSTRATIVE
- — An example to explain the idea, not real data.
IMPLICATIONS
WHAT IT MEANSThree things that change once you split the two
THE HEADLINE WON'T SCARE YOU
A headline jump from gas doesn't force the Fed to act. If core is calm, the scare usually passes.
THE FED FOLLOWS CORE
Rate decisions lean on the steady trend. That's why the market dissects core every month.
BOTH MATTER, DIFFERENTLY
Headline hits your wallet today; core sets the path for rates, your mortgage and your savings tomorrow.
Knowing which is which helps you read the same data the way the Fed reads it, not the way the headline does.
- RATES
- — The price of money the central bank sets.
- MORTGAGE
- — A home loan; its cost depends on rates.
EXAMPLE
THE BASKETHow a typical inflation basket splits
By removing food and energy (25% of the basket), core keeps the 75% that moves slowly and reliably.
An approximate split of a consumer basket: core removes the two jumpiest slices, food and energy.
- BASKET
- — The set of goods and services whose prices are measured monthly.
- APPROXIMATE
- — Rounded weights to illustrate; they vary by country and year.
TO ILLUSTRATE
EXAMPLE ASSETSFive assets that live off this distinction
| TIP | ≈110 | → CPI-linked | Bonds tied to headline inflation: the principal rises with the full CPI. |
| VDE | ≈130 | → energy | Energy sector: rises and falls with the price core ignores. |
| XLP | ≈80 | → staples | Consumer staples and food: the other volatile leg that gets stripped. |
| SHV | ≈110 | → rates | Short bills: they pay whatever rate the Fed sets by reading core. |
| SPY | ≈770 | → market | Broad market: it reacts to core because core drives the rate path. |
Approximate values, only to illustrate the concept: each reacts to headline or core in a different way.
- TIPS
- — Bonds whose value adjusts to headline inflation.
- APPROXIMATE
- — Rounded example figures, not the day's prices.
WRAP
FOLLOW USDid this concept help?
Next time you see an inflation headline, ask: headline or core? It changes the whole read.
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- CORE
- — Inflation minus food and energy; the one the Fed watches.
- HEADLINE
- — Inflation with every price; the one in the headlines.