Well it&#x27;d all be news. Here&#x27;s the steps:<p>1) Fed makes announcement (news generated)<p>2) Machine traders read news and make appropriate trades<p>3) Markets move (if big enough, news generated)<p>4) Machine traders see markets move, possibly make appropriate trades<p>5) Markets move again (if big enough, news generated<p>Each movement in the markets, if it were big enough to be news worthy, would generate a news event. That is ok, because news readers would want to know about large market movements (well other news readers would - I really wouldn&#x27;t). It&#x27;s up to the traders to decide if they want to keep buying&#x2F;selling.