SHLL - Hyliion and Tortoise Acquisition announce merger June, 19 2020 08:08 AM Tortoise Acquisition Hyliion to merge with Tortoise Acquisition (NYSE:SHLL) and will be named Hyliion Holdings and remain on the NYSE under the new ticker symbol “HYLN.”More news on: Tortoise Acquisition Corp., Merger & acquisition news, Stocks on the move Read more ...