Celanese (CE), a specialty chemical company, has outperformed its selected peers so far in 2018. YTD (year-to-date), Celanese has risen ~6%. Its peer Eastman Chemical (EMN) has risen 5% YTD. LyondellBasell (LYB) and Westlake Chemical (WLK) have fallen 7.4% and 21.2%, respectively, YTD. However, CE has underperformed the S&P 500 (SPY), which has gained 8.6% in the same period.