Alberta Investment Management, an institutional investment manager, completed the acquisition of an additional 59% stake in Howard Energy Partners, a diversified energy platform, from Astatine Investment Partners, a private equity firm. Financial terms were not disclosed. "We are excited to make further investment in Howard Energy and to grow our global portfolio of high-quality energy infrastructure assets on behalf of our clients. AIMCo's significant ownership ensures continuity of a very successful, long-term partnership with Howard Energy," Ben Hawkins, Alberta Executive Managing Director and Head of Infrastructure, Renewables & Sustainable Investing.