Ecovyst (ECVT) shares soared 9.2% in the last trading session to close at $8.3. The move was backed by solid volume with far more shares changing hands than in a normal session. This compares to the stock's 'no gain, no loss' position over the past four weeks.Ecovyst shares rose after a Citi analyst raised the price target from$7.50 to $10.00 while maintaining a Buy rating. The analyst also updated estimates for Ecovyst, with second-quarter 2025 and full-year 2025 EBITDA estimates moving up 2% and 1%, resp ...