Guggenheim Is Bullish On ESS Tech, Sees Significant Upside ESS Tech Inc (NYSE:GWH) coverage has been initiated with a Buy rating and a price target of $10 (implying an upside of 82.5%) by Guggenheim analyst Joseph Osha. The analyst cites ESS as one of a large group of companies over the past two decades aiming to make flow batteries work commercially. Osha views ESS… Benzinga · Mar 22, 2022