Consumer discretionary companies derive a majority of revenue from the sale
of consumer-related products or services for which demand tends to exhibit a
relatively high degree of economic sensitivity. An apparel business would be an
example of a business activity that falls into this category.
Equity Investments MCQ - Equity Investments Section 2
The GICS classification is based on: company -> sub-industry -> industry ->
industry -> group -> sector.
Since there are only two major companies (Boeing and Airbus), this industry
can be classified as concentrated.
RGS contains nine sectors whereas GICS contains 10 sectors because
telecommunication service is included as part of utilities sector.

