Summary

• The Communication Services sector has been an underperformer of late.
• The sector is by far the worst performer today, as it currently trades down 2% as of this writing, with shares of Alphabet a major drag.
• Not all of the weakness has been due to mega-caps, though. As shown by the sector's 10-day advance/decline line, breadth has been weak, and that's been the case for some time now.

Before closing the doors for the long weekend, on Thursday we published an extended version of our Sector Snapshot with commentary on each of the eleven S&P 500 sectors. Home to mega-caps like Alphabet (