The economic calendar is the schedule of major data releases - inflation (CPI), the Federal Reserve's rate decision (FOMC), the monthly jobs report (NFP), and others - that reliably move markets. Unlike random news, these arrive at known times, which changes how you trade around them.

Why they move markets

These releases reprice expectations about growth, inflation, and interest rates - the forces underneath every asset. A CPI surprise or a hawkish Fed statement can swing the S&P violently in seconds as the whole market re-adjusts at once. The move is often less about the number itself and more about how it differs from what was already priced in.

How volatility behaves

Ahead of a big release, the market often coils - volume thins and price ranges tighten as participants wait. The release then triggers a sharp expansion, frequently with a fake-out in one direction before the real move. Spreads widen and liquidity thins right at the print, making fills treacherous.

The calendar tells you when the market will be most dangerous. That is information you can act on - by not acting.

Why many pros step aside

A common discipline is to reduce or pause size directly around major releases, because the initial spike is noise-driven and punishing to be caught in. Knowing a catalyst is coming is itself a decision input - sometimes the highest-value move is to wait for the dust to settle and trade the structure that forms afterward, rather than gamble on the reaction.