Why buy the rumor, sell the news works

Markets price the expectation first

"Buy the rumor, sell the news" means price can move before the official event because traders are already acting on expectations. If enough people expect good news, demand may appear before the news is confirmed. By the time the headline arrives, the easy buyers may already be in the trade. Then the event confirms what the market expected, but price does not rise much more because fresh demand is weaker than people assume.

The sell-the-news part often comes from profit taking. Traders who bought early may use the official news as their exit. Late buyers see a positive headline and jump in, but they may be buying from earlier traders who are closing. That creates a strange feeling for beginners: the news is good, but price falls. The missing piece is positioning. If too many people were already leaning one way, confirmation can become the exit, not the entry.

This does not mean every news event reverses. Sometimes news is much stronger than expected, and price continues. The point is to separate the headline from the market's prior expectation. Look at the chart before the event. Did price rally for days into the announcement? Did volume or range expand early? Are traders crowded on one side? A $500 account does not need to be first. It needs to avoid being the late buyer who pays the top because the story finally became obvious.