Ecovyst (ECVT) shares dropped by more than 4% in recent trading on Tuesday after Citigroup downgraded the chemical firm's stock to neutral from buy and adjusted the price target to $10.50 from $10.
Trading volume stood at over 2.1 million shares against a daily average of about 1.7 million.
Price: 8.98, Change: -0.40, Percent Change: -4.22