The article question whether Extra Space Storage (EXR) is underperforming the real estate sector. No further details are provided in the given input content to answer this question.

<p>文章质疑 Extra Space Storage (EXR) 是否在房地产行业中表现不佳。给定的输入内容中没有提供进一步的细节来回答这个问题</p>

Extra Space Storage 股票：EXR 是否在房地产板块中表现不佳？