Shares of Arclight Clean Transition jumped after Chamath Palihapitiya, whose specialty purpose acquisition company took ArcLight public, said via Twitter: “For those of you who have been following our investment in $ACTC and it’s merger with Proterra (electric buses, batteries) they just won a huge deal in MD…slowly and surely we will electrify every form of transportation.” Shares of ArcLight are up 9% to $23.87 in morning trading.