Advanced Energy is a global leader in the development and marketing of power conversion and control system solutions, process monitoring and control tools, ion-beam sources, and plasma abatement systems. Founded in 1981, AE is a publicly held company traded on Nasdaq under the symbol AEIS.

Symphony brings Aspen Technologies' manufacturing enterprise optimization and supply chain solutions to the semiconductor market. With deep process knowledge, best-in-class technology, and strategic alliances with leading business and technology partners, AspenTech offers the industry's broadest family of scaleable solutions allowing customers to be successful in the Internet economy.

Woodhead Industries has made an equity investment in Symphony Systems. Woodhead develops, manufactures, and markets specialty electrical, electronic, and industrial communications products primarily serving the global automation and control market with connectivity solutions.