According to a new ruling by the Badatz - a rabbinical court whose rulings are observed by a significant portion of the Haredi community - ultra-Orthodox Jews must not invest in the shares of Israeli companies, even in those owned by Orthodox businessmen such as Lev Leviev, Shaya Boymelgreen and Motti Zisser. The ruling explained that buying shares makes the investor a partner in the company. But most publicly-traded companies, it said, are involved in some way in violating halakha (Jewish law ) - for instance, by violating the Sabbath or by inappropriate advertising - and a Haredi Jew must not be a partner in such an enterprise.
http://www.haaretz.com/print-edition...tocks-1.288841