How DowDuPont's Leverage Position Looks after MergerDow Chemical and DuPont completed their merger on August 31, 2017. The newly merged entity, DowDuPont (DWDP), was listed on September 1, 2017, almost three months ago. As of November 20, 2017, DWDP has risen 5.5%. The stock has underperformed Westlake Chemical (WLK) and LyondellBasell (LYB), which have risen 21.0% and 15.5%, respectively. Interested in DWDP? Don't miss the next report. Receive e-mail alerts for new research on DWDP Success!