Islamic principles govern many aspects of a Muslim’s life, from social to economic matters. All of which are outlined in the Koran and by Sharia Law, which quite literally means ‘pathway to be followed.’ When it comes to day trading though, black and white lines can quickly become grey.
It is generally accepted that buying stocks is not haram. This is because you are simply owning a percentage in a business. However, you do need to be sure the company in question is not dealing in a un-Islamic manner. Companies like Guinness (alcohol) and Ladbrokes (gambling), for example, would not be allowed.