Cupid Childs, a wise investment statistician, once said about factor models, Similar stocks should display similar returns.

Question:

Cupid Childs, a wise investment statistician, once said about factor models, "Similar should display similar returns." What did Cupid mean by this statement?
Stocks
Stocks or shares are generally equity instruments that provide the largest source of raising funds in any public or private listed company's. The instruments are issued on a stock exchange from where a large number of general public who are willing...