Shares in Twitter have been found eligible for investment by Islamic funds, according to IdealRatings, a company that screens stocks to determine whether they meet Muslim principles.
IdealRatings said it had vetted Twitter in response to requests from fund managers and individual investors around the world. The social media company's share price soared in last week's New York Stock Exchange debut after a $1.8 billion initial public offering.
Islamic fund managers follow guidelines such as bans on investment in firms involved with tobacco, alcohol, and gambling. Since Islam frowns on monetary speculation, they also shun some companies that use interest payments or have high debt levels.
(Read more: Twitter sizzles in debut as traders stampede to IPO)