regarding share trading i learnt that trading shares of those companies which do not indulge in unlawful business like wine company etc is permissible. But even if we invest in companies which do not have these haram products or services, like real estate, IT, power companies, they are involved in interest based financing for their projects and ventures. Investing in them will mean partnership in a company that's financed by haram means. Please, guide whether such investments are halal.