Westlake (WLK) shares were down over 3% in Wednesday trading after BMO Capital downgraded the stock to market perform from outperform, and cut its price target to $82 from $96.
Trading volume stood at more than 445,000 shares, compared with a daily average of about 1.0 million.
Price: $72.22, Change: $-2.54, Percent Change: -3.39%