You now know how to value a company. But every valuation you will ever do sits inside a weather system — interest rates, inflation, the business cycle — that can lift or sink your work regardless of how carefully you did it. This lesson is about reading that weather. Not predicting it. Reading it. The distinction is the whole lesson.
Rates are gravity
In Lesson 1 you learned that value is future cash, discounted to today. The discount rate every investor starts from is the yield on safe government debt — the return you can get while taking essentially no risk. When central banks raise rates, that baseline rises, and every future dollar from every risky asset is discounted more heavily. Prices fall without a single business getting worse. When rates fall, the reverse: future cash is worth more today, and prices float upward.
Warren Buffett’s line is the cleanest version: interest rates act on asset prices the way gravity acts on matter. And notice who feels the gravity most — the further away a company’s cash is, the harder discounting bites. A utility earning steady money today barely notices a rate hike in its valuation. A growth company whose big profits live ten years out gets crushed by the same hike, because those distant dollars were the whole story. This is why rising rates hit expensive growth stocks hardest, a pattern you can watch play out in real time on any hot inflation morning.
Inflation is what rates respond to
Central banks do not move rates on whim. They are reacting — above all — to inflation. Hot inflation forces hikes; cooling inflation permits cuts. Which means the chain that drives most macro headlines runs: inflation data → expected central-bank policy → rates → the discount on everything you own.
This chain explains the market’s strangest-looking habit: good news is sometimes bad news. A blowout jobs report — more people working, wages up — can knock stocks down, because a hot economy keeps inflation warm, which keeps rate cuts away. The market was not reacting to the economy. It was reacting to what the economy implies about the central bank. Once you hold the chain in your head, days like that stop being confusing.
The short list that moves everything
Thousands of statistics come out every month. Four matter enough to move your whole portfolio in an afternoon — they are the ones we track on our Macro Events page:
- CPI (inflation) — the input the central bank cares about most.
- Central bank rate decisions — the Fed, and for many of our readers the Bank of Canada or ECB. The decision matters; the language about future decisions often matters more.
- The jobs report — the economy’s temperature, read through the inflation chain above.
- GDP — the slowest and least surprising of the four, confirming the cycle’s direction after the fact.
One more instrument worth glancing at: the 10-year government bond yield. It is the market’s live, all-things-considered vote on growth and inflation — and it is the “gravity” number from Lesson 1’s earnings-yield comparison. You do not need to check it daily. You need to know that when it moves sharply, every valuation on your watchlist just changed.
Priced in, and fast
Here is the humbling part. When CPI lands at 8:30am, the market has repriced by 8:30:01 — and the repricing reflects not the number itself but the gap between the number and what was expected. Whatever you read in the evening news was traded on before you finished breakfast. You will not beat professional macro traders to the reaction, and the good news is you do not have to. Reacting to macro headlines is a losing game for individual investors; it is the fastest-priced information in the world.
Position, don’t predict
So what do you do with macro awareness, if not trade on it? You use it the way a sailor uses a forecast: not to bet the boat on sunshine, but to make sure no single weather outcome sinks you. In practice:
- Stress-test the portfolio, not the prediction. Ask: if rates rise two points, what happens to my holdings? If inflation returns? If a recession lands? You are not guessing which happens — you are checking that no answer is fatal.
- Know your portfolio’s macro tilt. All long-duration growth stocks is an implicit bet on falling rates whether you meant it or not. Heavy banks-and-energy is a bet on a hot cycle. Macro reading tells you what you are already betting on.
- Use macro to explain, not to time. When your quality holding drops 4% on a rate scare with no news of its own, the macro chain tells you your thesis is intact — the weather changed, not the boat. That understanding is what stops panic selling.
Rates and inflation are the weather. The next lesson is about the seasons — the business cycle, and how money rotates through sectors as it turns.