Narrower market breadth means a lot of businesses are facing headwinds, and that investors are piling into just a few names. It is worth considering in picking stocks for the second half of 2020.

https://www.barrons.com/articles/only-a-few-big-stocks-are-driving-the-markets-gains-thats-a-problem-and-an-opportunity-51590146101?mod=hp_LEAD_1