Everything looked like it was coming undone last week. As recession fears gripped the market, the S&P 500 tumbled 3% in a single day. The Nasdaq 100 lost more than 1,000 points at one point, its worst loss ever, before regaining some of the lost ground.Although the situation turned markedly better by Tuesday and continued improving as the week progressed, the whipsaw event still has investors cautious. Wild swing trades can often signal a new, worse crash is coming. That’s why it’s important to prepare for ...