NASDAQ on Tuesday announced that it will adjust the weighing of several companies in the NASDAQ-100 index to better reflect their market capitalizations. The NASDAQ-100 index is comprised of the 100 biggest non-financial stocks on the NASDAQ exchange. The adjustment, which will take place on May 2nd, is the first of its kind since 1998. Apple will take the biggest hit as its weighting will be adjusted down from 20.46% of the the index to 12.33%. The Cupertino-based company’s representation on the NASDAQ-100 is currently six times that of the No. 2 company, Microsoft, which will see its weight doubled on May 2nd. A total of 82 stocks will be adjusted downward while 18 companies including Microsoft, Google, Intel, Cisco and Oracle will get larger shares.