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by VT Markets
Oct 21, 2026
美元指数（DXY）作为衡量美元（USD）兑六种主要货币表现的指标，在周二欧洲时段于小幅上扬后回落，交投于101.80附近。价格走势仍维持在50日指数移动平均线（EMA）上方，不过9日EMA继续对涨势形成压制。14日相对强弱指数（RSI）在55左右，而FXS美联储情绪指数维持在127.51附近；这组数据组合显示动能仍算稳定，但政策利好推动力较此前减弱。
从图表来看，DXY正测试上升通道的下沿，后续可能出现两种情景：一是依托趋势线支撑反弹，二是若该“地板”失守则可能向下破位。阻力位位于9日EMA附近的101.98；若有效上破，将把10月14日创下的18个月高点102.94纳入视野，随后可能上探上升楔形上沿103.90。支撑方面，通道底部约在101.70，其次为50日EMA的100.94；若进一步下跌，可能打开回测8月20日所创五个月低点98.56的空间。
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