American Airlines Group Inc

1. American Airlines Group Inc
2. Air China Ord Shs A

Using random walk theory (and other theories) to prove that the public information of Covid-virus is weak form（one of the Efficient Markets Hypothesis）for the volatility of these two stocks.

Please use the following viewpoints to support the above argument:

-Degree of impact in different markets (same industry in different countries)

-Using mathematical models to prove that the impact of the coronavirus on the market makes the market weak and effective. (Or make the market's stock price inaccurate with the market price)

-Why does the (public information) valuation of the financial reports of these two companies can't support the true price of the market stocks. -Explain the authenticity of financial statements of two companies (falsified financial reports)

Acknowledgment:

1. Other points could be included to support the claim, but the points I provided have to be included.
2. Go through the powerpoints I uploaded above.
3. The main content of this paper should be explaining the model that the writer is going to use, and the analysis of the financial reports of these two companies have to be included.
4. Please see the example that I uploaded above, and please follow that format.
5. The number of references is not restricted, but at least 9 references must be included.