
The Global Industry Classification Standard (GICS) sectors are about to undergo a major reshuffle that will impact the Consumer Discretionary, Information Technology, and Telecommunication Services sectors. Combined, these three sectors account for over 40% of the S&P 500’s market cap. The change impacts a large portion of the index and unlike the previous change that broke out the Real Estate sector from the Financials sector, this reclassification is not clean. Exhibit 1: Comparison of S&P 500 New to Current GICS Sectors Source: I/B/E/S On Monday, Sep. 24, 2018, a new GICS sector, Communication Services, will be implemented. The new sector