Stock index provider MSCI Inc is considering changing its rules to allow shares of Alibaba Group Holding [IPO-BABA.N] and other companies that list their shares in faraway markets to be included in its widely used indexes. The company announced that it was considering changing its rules last week, but did not explain the reason for the changes: questions from investors amid the Alibaba initial public offering, Reuters has learned from financial industry sources. Alibaba, a Chinese online retailer, plans to sell some $24 billion worth of shares next week on the New York Stock Exchange, in a listing that could be the biggest ever IPO. Because Alibaba is not listed anywhere in Asia and is listing in New York, it would be excluded from big MSCI indexes.