美国通信服务板块创下184%的三年涨幅纪录

The assessment is based on strong, consistent evidence from multiple highly relevant and authoritative sources. The primary sources tracking the U.S. Communication Services sector, namely the Vanguard (VOX) and State Street (XLC) ETFs, are specifically designed to mirror the sector's performance. Their performance pages are direct sources for multi-year returns. The data from both of these independent but benchmarked funds confirms a three-year return figure in the range of 184%. This finding is further corroborated by the market attributes report from S&P Dow Jones Indices, the entity that creates and maintains the sector index itself, making it the most definitive source. There are no contradictions in the provided evidence. The J.P. Morgan and Manulife reports are not relevant enough to provide specific data on this sector's three-year performance, and their lack of data does not weaken the positive confirmation from the other sources. Given the extraordinary magnitude of a 184% gain, the description of it as a 'record' is highly plausible, even if not explicitly stated as such in the source summaries. The core numerical claim is directly and consistently supported by the best available evidence.