RPT-U.S. corporate breakups could be catalyst to change Dow index

Shake-ups come infrequently for the Dow Jones Industrial Average, but some degree of change may be in the works for the stock index as two of its 30 constituents prepare to transform from large conglomerates into smaller companies. The latest occasion to re-examine the Dow stems from chemical company DowDuPont Inc, which is breaking up into three publicly listed stocks. The first step, the separation of the company’s Dow materials science division, is due to take effect on April 1.