Selling Chametz

From Halachipedia

Stocks of companies which own Chametz

  1. Some authorities hold that there's is no prohibitoin of owning Chametz to a shareholder of a compnay which owns Chametz on Pesach who has no say in the actions of the company, while others hold that one should sell the shares together with one's other Mechirat Chametz through the Rabbi. [1]

References