The 英镑兑美元升至1.3770的盘中新高, briefly surpassing both the 早盘高点1.3764 and the 50%回撤 of the decline from the 2014年高点, which comes in at 1.37683. However, the 超过这些水平的突破很浅，并且缺乏后续行动, raising concerns that 势头可能正在减弱.

From a technical perspective, 未能保持在50%的中点和之前的高点之上 is a potential 买家面临危险. A reversal below these zones could prompt profit-taking or invite sellers back into the market.

For 卖家获得更多信心, a few key levels need to give way:

• 保持在1.3770以下 keeps the top in place

• 跌破1.3697 (recent swing lows on the hourly chart) would strengthen the bearish case

• 跌破1.3647和1.3631 (highs from yesterday and June 14) would be further confirmation

• 最终跌破100小时移动平均线1.3582 would shift the short-term bias more clearly in favor of sellers

For now, while the pair isn't collapsing, the 信心不足创新高 could make bulls cautious and give bears something to lean on.