September 2018 GICS Reclassification: The Communication Services Shift
2018 GICS Sector Reclassification — Structural creation of Communication Services: transferring Alphabet and Meta out of technology and altering index dynamics.
The plate
S&P and MSCI reassigned Alphabet, Meta, Netflix, and peers from Information Technology into the newly created Communication Services sector, reallocating roughly a fifth of XLK assets overnight.
What this page answers
This static page is built to answer searches for GICS · 2018-09-24 Reshuffle. It summarizes the live dataset behind the September 2018 GICS Reclassification: The Communication Services Shift panel and links to the full interactive chart.
S&P and MSCI reassigned Alphabet, Meta, Netflix, and peers from Information Technology into the newly created Communication Services sector, reallocating roughly a fifth of XLK assets overnight. The data is refreshed by the History of Market pipeline and published as a stable JSON endpoint for research, citation, and AI-agent use.
Data & Source
GET /api/xlk/reclass-2018.json — Canonical dataset endpoint.
Exchange closing prices · Company filings · Robert Shiller · FRED · NBER.
FAQ
Where does this data come from?
History of Market combines public market and macro datasets — exchange closing prices, company filings, Robert Shiller, FRED, NBER, and the UBS Global Investment Returns Yearbook (Dimson–Marsh–Staunton). The exact endpoint for this panel is linked below.
How often is it updated?
Daily-tier datasets refresh after the U.S. market close, with a broader weekly refresh on Sunday. The timestamp shown on this page comes from the JSON payload.
Can I use the data?
Yes, for research and education with attribution to History of Market. Upstream data sources retain their own terms.