*CPI vs PPI - Explained Simply
Both track inflation, but from different ends of the economy.
*1. CPI - Consumer Price Index*
- *What it measures*: The average price change of a "basket" of goods and services that households buy
- *Examples*: Groceries, rent, gas, doctor visits, clothes, phones
- *Who cares*: You, the Fed, and policymakers. It’s the main inflation number for cost of living
- *Formula*: Tracks retail prices paid by consumers
- *Released*: Monthly by the Bureau of Labor Statistics, usually around the 10th
*2. PPI - Producer Price Index*
- *What it measures*: The average price change that producers/factories receive for their goods and services
- *Examples*: Raw materials, wholesale goods, factory output, energy for businesses
- *Who cares*: Companies and economists. It’s a "leading indicator" - PPI often moves before CPI
- *Formula*: Tracks wholesale prices paid to producers
- *Released*: Monthly by BLS, usually a few days before CPI
*Key Difference*
Think of it like this:
*PPI = Inflation at the factory door* → If steel and wheat get expensive, PPI goes up first
*CPI = Inflation at the store checkout* → A few months later, you see higher bread and car prices
So traders watch PPI to predict where CPI is heading.
*Why it matters for markets
- *High CPI*: Fed may raise rates to cool inflation. Bad for stocks/crypto short term
- *High PPI*: Could mean companies will pass costs to consumers soon = future CPI up
- *Falling PPI + CPI*: "Disinflation" - good for risk assets
Here's the HD chart showing how they typically move together:
Want me to pull the latest actual US CPI and PPI numbers for April 2026 and plot them for you?
