Research on Chinese Stock Market during COVID-19—Based on Random Matrix Theory

Figure 1

Sequence charts of daily returns of 98 stocks in the three major industries and the three major industry indices. (a) A daily return sequence chart of 30 stocks in the consumption industry, (b) a daily return sequence chart of 38 stocks in the pharmaceutical industry, (c) a daily return sequence chart of 30 stocks in the financial industry, (d) a daily return sequence chart of Shanghai consumption, Shanghai medicine, and Shanghai finance.

(a)

(b)

(c)

(d)