One shock, many channels

A single data surprise propagates through the market in a recognisable sequence. Understanding the path lets you choose the right instrument — and, more importantly, tells you when two positions you thought were different are actually the same trade.

Worked example: hot US inflation

Front-end yields rise — the market prices more tightening.
The dollar strengthens — a higher expected path attracts flows; EUR/USD and USD/JPY respond first.
Real yields rise — if nominal rises faster than break-evens, gold falls.
Equity multiples compress — higher discount rates lower the present value of future earnings. Growth stocks suffer most.
The second-order effect — if the print is hot enough to threaten growth, the equity reaction flips from "rates" to "recession risk" and everything reverses.

Choosing the instrument

Want the cleanest rates expression? Trade the currency whose central bank is most sensitive to the data.
Want the growth expression? Trade the index or a cyclical commodity.
Want the real-rates expression? Gold.

Do not trade three of them and call it diversification. A long-dollar position and a short-gold position opened on the same thesis are one position with extra costs.

When the map breaks

The transmission above assumes the rates channel dominates. In a risk-off episode, correlations converge toward one and everything moves together regardless of the specific data. Recognising which regime you are in matters more than the individual mapping.

The honest caveat

These relationships are tendencies, not laws. Correlations drift, invert, and occasionally break for months. Any framework that assumes fixed relationships will eventually be wrong at the worst moment.

How to check this yourself

Pick one macro surprise — a hot CPI print, say — and write down what it should do to each of: the dollar, the two-year yield, gold, and an equity index. Then check what actually happened. Repeat for three or four events and you will start to see which channels transmit cleanly and which are already crowded.