The major changes to the U.S. tech and telecom indexes that you’ve been hearing a lot about reflect the ceaseless merging of telecoms, technology and media companies. But what you may not realize is that these index changes are not ending this week or limited to the U.S. stock market — more index overhauls will be occurring across global stock markets through the end of the year, hitting some of the largest public companies around the world, including Alibaba.