Study the financial statements and other information of two public companies from the same sector (for example General Motors and Ford), listed in an American Stock Exchange, (Nasdaq, NYSE, American Stock Exchange) and compare them.

1. Show the market prices and %changes of the shares of the two companies, on a table or a graph, along with the index, and make comments and comparisons. Increases, decreases, and why! (on a separate table or a graph)

2. Describe the company's profitability (net income / sales) as percentages. 

3. Calculate and comment on the liquidity of the two companies (current assets / current liabilities).