With the Federal Reserve’s September rate hike now underway, there is no turning back once the arrow has left the bow. The tightening cycle is unlikely to end in the near term; it may not reverse until a major economic event emerges—such as a recession or a substantial equity-market decline. Accordingly, trading during this period should become more cautious. Should the pace of tightening accelerate, market volatility is likely to increase as well. Over the weekend, I held an in-person discussion with Tiger users in Hong Kong. Based on my U.S. dollar cycle model, this round of Fed tightening is a landmark event signaling that the dollar cycle has entered a new phase. Given widening interest-rate differentials, we may subsequently face an environment of accelerated U.S. dollar appreciation.