Level 8 · Lesson 4
Inflation Data
CPI & PPI
The number that rewrites rate expectations in seconds. Understand what it measures, why core matters more than headline, and how to trade the deviation.
First — Why This Matters
🌡️ The Market’s Temperature Reading
A doctor doesn’t just check if you have a fever — they check which kind. A fever from a cold (temporary) is treated differently from a fever from an infection (structural). CPI works the same way. Headline CPI is the thermometer reading. Core CPI tells you if the infection is getting worse or better.
The Fed doesn’t treat a fever caused by an oil spike the same as one caused by rising rents. Neither should you.
🔎 REAL SCENARIO
January 2024 CPI. Headline: 3.1% (forecast 2.9%). Core: 3.9% (forecast 3.7%). Both hot. EUR/USD dropped 90 pips. Gold fell $28. NASDAQ shed 1.8%. All in 20 minutes. One data release. Three months of rate cut hopes — evaporated. Traders who checked the calendar and flattened beforehand: unaffected.
01 — What CPI Measures
The Components and Their Weights
Not all inflation is equal. Housing alone is 34% of the index.
02 — The Chain Reaction
Hot CPI vs Cold CPI
Watch how the same data with opposite deviations cascades through markets.
03 — Core vs Headline vs PPI
Know What the Fed Actually Watches
04 — The CPI Reaction Timeline
Minute-by-Minute After Release
T-30 min
Pre-positioning. Volatility compresses. Spreads start widening.
Be flat or have very wide stops.
T-0 (Release)
Number drops. 50-150 pip spike in 5 seconds. Algos fire first.
DO NOT TRADE. Initial spike reverses 60-70% of the time.
T+2 min
Core vs headline parsed. Market digests. Often a partial reversal.
STILL WAIT. This is the whipsaw zone.
T+15 min
Direction establishing. Spreads normalising. Real flows visible.
NOW assess. If deviation is clear, this is your entry window.
T+60 min
Full digestion. Any reversal has played out. Trend move continues.
Normal trading resumes. New structure formed. New bias established.
05 — Interactive Challenge
CPI Reaction Simulator
5 mock CPI releases. Predict the direction of USD, Gold, and S&P 500 for each. Scored against historical averages.
CPI RELEASE #1
Fed has been signalling patience. Market pricing 3 cuts this year.
HEADLINE
3.8%
CORE
3.9%
FORECAST (H/C)
3.2% / 3.3%
DEVIATION
+0.6% / +0.6%
USD Direction
Gold Direction
S&P 500 Direction
06 — The Trend Matters Most
Single Print vs Multi-Month Direction
3+ MONTHS RISING = Structural inflation problem. Fed will be aggressive. One cool print doesn’t change this. Need 3+ declining months.
3+ MONTHS FALLING = Genuine progress. Cuts are coming. One hot print doesn’t reverse it. But watch the NEXT print very carefully.
CHOPPY / SIDEWAYS = “Sticky inflation.” The Fed’s nightmare. No clear direction = rates stay higher for longer. Trade with less conviction.
THE RULE = Trade the deviation for the day. Trade the TREND for the month. One print = short-term. Three prints = medium-term. Six prints = the Fed acts.
07 — Global CPI — Not Just US
Other Countries’ Data Matters Too
UK CPI = Drives GBP. Released mid-month. UK has had stickier inflation than US — BOE stays hawkish longer.
EU HICP = Drives EUR. Flash estimate first, then final. ECB watches services inflation specifically.
JAPAN CPI = Rising Japanese inflation is HISTORIC — after decades of deflation. Hot Japan CPI = BOJ tightening risk = JPY strength.
DIVERGENCE TRADE = US CPI falling + UK CPI rising = GBP/USD uptrend potential. Inflation divergence drives rate divergence drives forex trends.
08 — Common Mistakes
4 CPI Errors That Cost Traders
09 — Cheat Sheet
CPI Quick Reference
CORE > HEADLINE = When they diverge, trade core. The Fed watches core. The first 2 mins trade headline. The next 58 trade core.
PPI → CPI = Hot PPI = prepare for hot CPI. Reduce risk the day before. Cold PPI after hot? Bigger surprise = bigger move.
15-MINUTE RULE = Initial spike reverses 60-70%. Wait for T+15 with normalised spreads and confirmed direction.
STICKY vs FLEXIBLE = Housing-driven CPI = structural, months to fix. Energy-driven = temporary, self-corrects. Know which is driving the print.
THE RULE = Hot CPI = USD up, Gold down, Equities down. Cold = reverse. In-line = no trade. Deviation size determines move size.
10 — Test Your Understanding
CPI Trading Game
5 scenario-based rounds. Navigate CPI releases like a macro-informed trader.
CPI just released. Headline: 3.8% (forecast 3.2%). Core: 3.9% (forecast 3.3%). Both massively hot. You’re currently flat. Gold drops $20 in the first minute.
11 — Knowledge Check
Final Quiz — 8 Questions
Question 1 of 8
Headline CPI: 2.9% (forecast 3.0%). Core CPI: 3.5% (forecast 3.2%). The Fed will likely focus on:
Question 2 of 8
PPI releases Tuesday: +0.5% above forecast. CPI releases Wednesday. You should:
Question 3 of 8
CPI releases at 13:30. At 13:31, EUR/USD drops 55 pips. At 13:33, it bounces 30 pips back. This reversal happens because:
Question 4 of 8
Shelter/housing is 34.4% of CPI and is “sticky.” This means:
Question 5 of 8
A “hot” CPI print means:
Question 6 of 8
You correctly predict CPI will be hot. The best time to enter a USD long is:
Question 7 of 8
Core CPI has been 3.3%, 3.4%, 3.5% for the last 3 months (rising). This month: 3.2%. Your reaction:
Question 8 of 8
CPI headline: 3.1% (forecast 3.2%). Core: 3.3% (forecast 3.3%). Headline is cool, core is in-line. Impact: