Tortoise Capital, investment management services company, agreed to acquire Advisory Research from Piper Jaffray, a leading investment bank, through two separate transactions. Financial terms were not disclosed, Piper Jaffray has signed a definitive agreement to sell the midstream energy business of Advisory Research to Tortoise Capital. It has also entered into a letter of intent to sell the remaining Advisory Research business to a partner group led by Matthew Swaim, managing director and executive committee chairman at Advisory Research. “The Advisory Research energy infrastructure investment team will continue to bring their deep expertise and strong investment process to existing clients, while leveraging Tortoise’s knowledge in investing across the energy value chain. In addition, Tortoise will bring expanded distribution and product capabilities to enhance growth potential.” Deb Schoneman, Piper Jaffray president.