Brightsphere Investment Group Plc. Replay the stock market charts of BSIG day by day, back to 2003. Open long and short positions without spending any money. BrightSphere Investment Group Inc. is a publically owned asset management holding company. The firm provides its services to individuals and institutions. It manages separate client focused portfolios through its subsidiaries. The firm also launches equity mutual funds for its clients. It invests in public equity, fixed income, and alternative investment markets through its subsidiaries. The firm was founded in 1980 is based Boston, Massachusetts. It was formally known as BrightSphere Investment Group plc. BrightSphere Investment Group Inc. was formed in 1980 and is based in Boston, Massachusetts.