Interest rates, central banks, and economic data
The policy rate is the single most important variable for financial markets, since it sets the benchmark every investment gets compared against. Economic data acts mainly through its effect on rate expectations.
When safe interest rates rise, every risky investment becomes less attractive by comparison. Why take on stock risk when a safe four percent is available? That's why rising rates tend to weigh on stock prices.
The reverse holds too. Falling rates make risk more attractive, and prices often rise. That's the most important relationship worth remembering.
Economic data like inflation, employment, or growth mostly acts indirectly: it changes expectations of what the central bank will do next. That's why good economic news can push prices down, if it makes higher rates more likely.
For you as a long-term investor, this implies little to act on. But it helps to understand why markets jump on certain days, instead of finding it inexplicable.
The policy rate acts through several channels. First, it changes the risk-free rate in the denominator of every present-value calculation, which hits assets with far-future cash flows hardest. Second, it affects companies' financing costs and therefore their profits. Third, it shifts the relative attractiveness of bonds versus stocks.
What drives the market reaction is the deviation from expectation, not the decision itself. Rate expectations can be read off futures markets, which is why an expected hike typically triggers little reaction, while a surprising phrase in the accompanying statement can cause substantial moves.
The effect of economic data is regime-dependent. In phases where the central bank is primarily fighting inflation, strong economic data weighs on markets, since it suggests tighter policy ahead. In phases dominated by growth concerns, the same data supports markets. The same news can therefore trigger opposite reactions depending on the environment, which largely undermines forecasting from individual data points.
Summary
- Rising safe rates tend to weigh on risky assets.
- What matters is the deviation from expectation, not the decision itself.
- The same economic news works in opposite directions depending on the environment.
Did you get it?
Through which channels does the policy rate act?
Through the discount rate, companies' financing costs, and the relative attractiveness of bonds.
Why does an expected rate hike barely move markets?
Because it's already priced in. Reactions come from deviations from expectation.
Why can good economic news push prices down?
If it makes tighter monetary policy more likely.
Related
- The key financial ratiosStage 3
- What money actually isStage 0
- Why prices moveStage 0