Где найти точную классификацию к каким секторам относится каждая акция (США)? Finviz относит Apple к сектору "Consumer Goods", т.е. когда говорят о технологическом секторе то это не про Apple.

Apple Inc. (AAPL)

Sector: Technology
Industry: Consumer Electronics

finance.yahoo.com/quote/AAPL/profile?p=AAPL

Global Industry Classification Standard

 en.wikipedia.org/wiki/Global_Industry_Classification_Standard
GICS is used as a basis for S&P and MSCI financial market indexes in which each company is assigned to a sub-industry, and to a corresponding industry, industry group and sector, according to the definition of its principal business activity. It is also considered to be the most successful as per Finch rating agency.

S&P 500 Sectors and Quotes

https://www.tradingview.com/markets/indices/quotes-snp/

Пример: 
S&P 500 INFORMATION TECHNOLOGY (SECTOR)
https://www.tradingview.com/symbols/SP-S5INFT/components/