axa private equity alliance boots alpinvest partners angel capital angel investor blackstone group capital structure carlyle group carried interest debt divisional buyout dollar general early history of private equity energy future holdings corporation equity equity co-investment financial endowment financial sponsor fund of funds goldman sachs growth capital high-yield debt high net worth individual history of private equity and venture capital hospital corporation of america institutional investor kohlberg kravis roberts leveraged buyout limited liability company limited partnership list of private equity firms management buyout management fee mergers and acquisitions mezzanine capital nxp semiconductors nielsen company pei media pension fund post-money valuation pre-money valuation preqin private equity private equity fund private equity secondary market publicly traded private equity seed money sovereign wealth fund startup company tpg capital venture capital venture capital financing venture debt venture round