Jim Cramer: Buy Penn National Stock When It Comes Down

S&P Dow Jones Indices announced changes to the S&P 500 index after the bell Friday that will add four companies and remove four others from the benchmark as of March 22.

Penn National  (PENN)  and Caesars  (CZR) , as well as NXP Semiconductors  (NXPI)  and Generac Holdings, will be added to the S&P. 

Jim Cramer, who has long been a fan of Penn, weighs in on the changes and when investors can buy Penn.

Recap TheStreet Live: Everything Jim Cramer Is Watching in the Markets Monday