The stock sector refers to the sector named after certain specific related factors of some companies in the stock market.

academic expression: when a certain type of stock has the F factor, it is named as the F-plate if it overshoots or overshoots the stock index. (f stands for factor value, and f can be industry, scale, region, performance, technology, institution, policy, etc.)

There are two main categories of plate classification: industry classification and concept classification.

industry sector classification: China Securities Regulatory Commission has a classification standard for listed companies, which is official. Every quarter, more than 51% of the company's business is required to be classified into the industry to which the company belongs. This content can be found on the website of the China Securities Regulatory Commission on the industry classification of all companies in the last quarter.

these include: a agriculture, forestry, animal husbandry and fishery; B mining industry; C manufacturing industry; D electricity, heat, gas and water production and supply industries; E construction industry; F wholesale and retail trade; G transportation, warehousing and postal services; H accommodation and catering industry; I information transmission, software and information technology services; J financial industry; K real estate industry; L leasing and business services; M scientific research and technical services; N Water conservancy, environment and public facilities management; O Resident services, repairs and other services; P education; Q health and social work; R Culture, sports and entertainment; S synthesis;

***19 categories, and secondary 91 categories. (Refer to the Guidelines for Industry Classification of Listed Companies (revised in 2112))

Conceptual plate classification: This is a variety, and there is no unified standard. Commonly used conceptual plate classification includes regional classification: such as Shanghai plate and xiong'an new area plate; Policy classification: new energy sector, free trade zone sector, etc.; Time to market classification: sub-new shares, etc.; Investor classification: social security heavy plate, heavy plate of foreign-funded institutions, etc. Index classification: Shanghai and Shenzhen 311 plates, SSE 51 plates, etc.; Hot economy classification: network finance plate, internet of things plate, etc. According to the classification of performance: blue-chip plate, ST plate and so on, there are endless categories of concept plates!

At the beginning of p>1996, the so-called "fund board" was also called "seriously underestimated low-priced board" and then a series of articles on "Re-understanding the fund market" were successively published, claiming to "calculate the investment fund account". In short, after analysis, the fund sector is considered to be the best investment target, and then the price really rose. What is the final result? The good dream didn't last long. In a few days, the fund fell back.